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323 - Electricity: power supply or regulation systems

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Class / Patent application numberDescriptionNumber of patent applications / Date published
323265000 Using a three or more terminal semiconductive device as the final control device 2287
323247000 Using a transformer or inductor as the final control device 48
323293000 Using an impedance as the final control device 43
323237000 Phase controlled switching using electronic tube or a three or more terminal semiconductive device 36
323235000 Zero switching 25
Entries
DocumentTitleDate
20130027004POWER DETECTION REGULATION DEVICE - A power detection regulation device including a power detection signal generator, a power state detector and a regulated output unit is disclosed. The power detection signal generator receives the input power from an external power supply and generates a power detection signal. The power state detector generates a power state signal based on the power state derived from the power detection signal. The regulated output unit receives the power state signal and generates a driving signal to an external electrical device in accordance with the feedback signal from the external electrical device. The power state signal is provided for the external electrical element to perform relevant processes, and the regulated output device can output the predetermined driving signal on receiving the power state signal indicating some abnormal situation in the input power so as to maintain the normal operation performed by the actuating element in the external electrical device.01-31-2013
20130027005SYSTEM FOR ELIMINATING CURRENT SURGES IN ELECTRONIC SYSTEMS AND EQUIPMENT HAVING INTERMITTENT CURRENT CONSUMPTION - The invention relates to a system for eliminating current surges that includes a first voltage regulator (01-31-2013
20120161727Power Control Circuits and Methods - In a switching mode power supply, a power controlling circuit includes a phase generator and a phase controller. The phase generator provides a clock signal. The phase controller detects phases of a phase reference signal and a burst initialization signal so as to generate a burst signal, and causes a phase of the burst signal to not be earlier than the phase of the group reference signal. The burst signal is utilized for switching the power supply between a non-switching state and a switching state. The group reference signal is generated according to the clock signal and has a lower frequency than the clock signal. The burst initialization signal is controlled by an output voltage source of the power supply.06-28-2012
20100013446 METHOD FOR CONTROLLING THE SUPPLY VOLTAGE FOR AN INTEGRATED CIRCUIT AND AN APPARATUS WITH A VOLTAGE REGULATION MODULE AND AN INTEGRATED CIRCUIT - The present invention relates to a method for controlling the supply voltage for an integrated circuit, which is connected to a voltage regulation module via a sense line, a voltage supply line and a bus wherein the supply voltage is provided by the voltage regulation module (01-21-2010
20100164442DYNAMIC ADJUSTMENT OF POWER CONVERTER CONTROL - In general, in one aspect, the disclosure describes a system comprising a power converter, a power delivery network, a load, and a communication link between the power converter and the load. The communication link is to implement a training sequence to dynamically adjust parameters of the power converter and set load-line slope based on implementation of the system. The load includes a training capability to generate stimuli having defined patterns and to update on the stimuli application to the power converter over the communication link. The power converter includes a controller to measure noise amplitude in a power output based on the stimuli, to adjust loop parameters to reduce the noise amplitude, and to set the load-line for the power converter based on the adjusting.07-01-2010
20110193535VOLTAGE GENERATING CIRCUIT, DEVICE INCLUDING THE SAME, AND METHOD OF GENERATING VOLTAGE - A voltage generating circuit includes a range adjusting unit configured to output a code signal for adjusting the range of an output voltage and to determine a magnitude of the output voltage to set a control code while an output range adjusting operation is performed. The range adjusting unit is configured to output the code signal in response to a data code received from the outside after the output range adjusting operation is complete. The voltage generating circuit includes a digital analog converter configured to output a conversion voltage in response to the code signal, and an output unit configured to set an amplification gain thereof according to the control code and to amplify the conversion voltage according to the amplification gain to output the output voltage.08-11-2011
20130076318POWER SUPPLY CONTROL SYSTEM AND METHOD - A power supply control system includes a power supply unit, a timing sequence controller, at least one converting circuit, and a power managing controller. The power supply unit provides a direct current input voltage. The timing sequence controller is powered by the power supply unit. The at least one converting circuit converts the input voltage into a direct current working voltage. The managing controller includes a detection unit detecting a voltage value of the output port, a comparison unit for comparing the voltage value of the output port with a value of the input voltage, and a control unit switching off the power supply unit when the voltage value of the output port is equal to value of the input voltage.03-28-2013
20130043848REFERENCE CURRENT GENERATION CIRCUIT - A reference current generation circuit is provided, in which a current generated according to a bandgap voltage is not directly used as a reference current, but the current generated according to the bandgap voltage is used to adjust an output reference current. In this way, the reference voltage is generated without using an external resistor, so as to effectively decrease the production cost.02-21-2013
20100109618METHOD AND SYSTEM FOR MANAGING UNINTERRUPTABLE POWER SUPPLY FOR HARMONIC REDUCTION - A method and system for managing a dual rectifier uninterruptable power supply, comprising activating each of said rectifiers to provide an output DC voltage, monitoring a level of operation of the uninterruptable power supply and deactivating a selected one of said dual rectifiers when a level of operation of said two activate rectifiers is less than a first predetermined level of operation.05-06-2010
20100109619POWER-MANAGED SOCKET - The present invention relates to a power-managed socket adapted for connecting to an electrical device and thus providing the electrical device with power. The power-managed socket comprises: a detection circuit capable of detecting and outputting a characteristic value of the electrical device connected to the power-managed socket, the characteristic value being a voltage value or a current value; an identification database capable of storing parameters corresponding to at least one specific electrical product; a micro control unit capable of converting the characteristic value received from the detection circuit after the characteristic value is analog-to-digital converted into an electric signal while comparing the electric signal with signals stored in the identification database to determine whether the electrical device connected to the power-managed socket is the specific electric product; and a power circuit capable of providing the detection circuit, the identification database and the micro control unit with power.05-06-2010
20130082667POWER MANAGEMENT CIRCUIT FOR WIRELESS COMMUNICATION DEVICE AND PROCESS CONTROL SYSTEM USING SAME - A power management circuit comprises an energy pump, a control circuit and a power consuming circuit. The power management circuit is connected in serial with a current loop in a serial connection with a field device to cause a regulated voltage drop across the serial connection at an insertion voltage and to output an electrical power derived from the insertion voltage. The energy pump inputs at least a portion of the insertion voltage, and a feedback sense, and output a charging voltage based on the feedback sense. The charging voltage sources the electrical power output by the power management circuit. The control circuit regulates the insertion voltage by modulating the feedback sense to the energy pump, and modulates the feedback sense in response to an electrical change in the current loop. The power consuming circuit receives the electrical power from the power management circuit.04-04-2013
20120181994BOOSTING SYSTEM, DIAGNOSING METHOD, AND COMPUTER READABLE MEDIUM STORING DIAGNOSING PROGRAM - The present invention provides a boosting system, a diagnosing method and a diagnosing program, that may diagnose a boosting section while suppressing consumption of electric power and current, and without being carrying out by a CPU. Namely, during an initializing operation, difference between power supply voltage and own threshold voltage charges capacitor C07-19-2012
20090243565METHOD AND APPARATUS FOR DETECTING END OF START UP PHASE - A PSE configured to determine the end of the start up phase at the PD responsive to a condition of the voltage at the PSE output. In one particular embodiment, the startup phase end is determined responsive to a PSE output voltage within a predetermined range of the PSE input voltage. In another particular embodiment, the startup phase end is determined responsive to the voltage drop associated with the PSE current limiter being lower than a predetermined maximum. In yet another particular embodiment, the startup phase end is determined responsive to the absolute value of the rate of change of the PSE output voltage being lower than a predetermined value. In yet another particular embodiment, the startup phase end is determined responsive to the absolute value of the rate of change of the voltage drop associated with the PSE current limiter being lower than a predetermined value.10-01-2009
20130049712DC-DC CONVERTER AND INFORMATION PROCESSING DEVICE - There is provided a DC-DC converter which converts an input voltage into an output voltage for supply to a load, in which an input terminal receives the input voltage, an output terminal outputs the output voltage, power stages each includes: a high side switch, a low side switch and an inductor, the control unit executes a first mode and a second mode wherein the first mode controls the high side switch and the low side switch in each of the power stages so that a ratio of an output current in each of the power stages to a load current flowing through the load becomes a set value and the second mode controls the high side switch and the low side switch in each of the power stages so that duty ratios of the high side switch and the low side switch are equalized among the power stages.02-28-2013
20130049711Frequency Lock Loop for Hysteretic Switching Regulators - Embodiments of the present invention provide systems and methods for reducing switching frequency variation in a hysteretic switching regulator. Embodiments of the present invention provide a new duty cycle controller for a switching regulator incorporating a new Frequency Lock Loop (FLL) for controlling the hysteresis of a comparator, and this hysteresis variation directly controls the switching frequency. The FLL of the present invention advantageously maintains a fixed frequency operation for a switching regulator while not affecting the transient response or stability of the main loop because it only changes the hysteresis of the fast comparator and does not introduce delays in the main loop of the switching regulator. Thus, the FLL of the present invention advantageously maintains a fixed switching frequency while causing a minimal impact to the switching regulator.02-28-2013
20130049713A/D CONVERSION APPARATUS AND DC-DC CONVERSION APPARATUS - There is provided with an A/D conversion apparatus which the first terminal receives a reference voltage signal, the single-ended to differential converter conducts single-ended to differential conversion on the reference voltage signal to obtain a first differential signal, the A/D converter conducts A/D conversion on the first differential signal based on the reference voltage signal to obtain a first digital signal, the digital circuit detects a DC offset which is a difference between the first digital signal and a digital signal, the second terminal receives an input signal, the single-ended to differential converter conducts single-ended to differential conversion on the input signal to acquire a second differential signal, the A/D converter conducts A/D conversion on the second differential signal based on the reference voltage signal to acquire a second digital signal, and the digital circuit subtracts the DC offset from the second digital signal to obtain a third digital signal.02-28-2013
20130069606DC Converter with Adjustable Output Voltage - The present invention relates to a dc converter whose output voltage is adjustable. The dc converter has 03-21-2013
20100134077POWER MANAGEMENT APPARATUS WITH BUCK BOOST CONVERTER MODULE - A power management apparatus includes a first electrical lead and a second electrical lead. The first electrical lead routes electrical current at a first electrical lead electrical potential level and the second electrical lead route electrical current at a second current port electrical potential level. The power management apparatus further includes a first electrical parameter sensor configured to measure a first electrical lead electrical parameter and a second electrical parameter sensor configured to measure a second electrical lead electrical parameter. The power management apparatus further comprises a buck boost converter electrically coupled to both the first electrical lead and the second electrical lead. The buck boost converter is configured to convert electrical current between the first electrical lead electric potential level and the second electrical lead electric potential level at a controlled potential conversion level. The power management apparatus further comprises a controller is configured to receive operating current from either one of the first electrical lead and the second electrical lead. The controller is configured to monitor the first electrical parameter sensor and the second electrical parameter sensor and being configured to output control signals to the buck boost converter.06-03-2010
20100264887BOOSTER DEVICE - A booster device for increasing a voltage at a voltage supply point of a power supply circuit for supplying a driving voltage to an electronic control circuit is provided. The power supply circuit includes a series-connected circuit having a diode, a resistor, and a capacitor which is connected to a DC power supply. One end of the capacitor is connected to a ground and a connection point of the resistor and the capacitor serves as the voltage supply point. The booster device includes a clamp circuit, an oscillation circuit, and a booster circuit that increase a voltage output from the DC power supply. When the voltage at the voltage supply point falls below a predetermined threshold voltage, the booster device supplies the increased voltage at the voltage supply point.10-21-2010
20130088206POWER CONTROLLER AND POWER MANAGEMENT CONTROL METHOD - A power controller includes a clock generator, a low-frequency clock generator, and a protection circuit. The clock generator provides a clock signal with a clock frequency for periodically switching on and off a power switch. The low-frequency clock generator provides a low-frequency clock signal with a frequency lower than the clock frequency. The protection circuit includes an over-power detection circuit and a logic circuit. The over-power detection circuit determines whether an over power event has occurred according to a feedback signal controlled by an output voltage of the power supply. When the over power event lasts longer than an over power tolerance duration, the logic circuit isolates the power switch from the clock signal to keep the power switch turned off. The over power tolerance duration is equal to a predetermined clock cycles of the low-frequency clock signal.04-11-2013
20130088207CONTROL CIRCUIT OF STEP-DOWN DC-DC CONVERTER, CONTROL CIRCUIT OF STEP-UP DC-DC CONVERTER AND STEP-UP/STEP-DOWN DC-DC CONVERTER - A DC-DC converter or the like capable of generating a stable output voltage is provided. A control circuit 04-11-2013
20120217939REFERENCE VOLTAGE STABILIZATION APPARATUS AND METHOD - A reference voltage stabilization apparatus is disclosed, having an input node for receiving a reference voltage, an output node for coupling with a load, a voltage buffer coupled between the input node and the output node, a charge storage device coupled with the output node, and a charging/discharging circuit coupled with the charge storage device for charging or discharging the charge storage device. The voltage buffer and the charged/discharged charge storage device are coupled with the load so that the voltage at the load equals the reference voltage after a period of time.08-30-2012
20130057234CONTROL METHODS AND POWER CONTROLLERS WITH LOAD COMPENSATION ADAPTED FOR A POWER SUPPLY - Disclosure includes control methods and power controllers with load compensation adapted for a power supply powering a load. A disclosed power controller comprises a converter and a control circuit. The converter converts the load signal at a first node to output a load-compensation signal at a second node. The load signal corresponds to an output power provided from the power supply to the load, and the converter includes a low-pass filter coupled between the first and second nodes. The control circuit is coupled to an inductive device via a feedback node, for controlling the output power to make a cross voltage of the inductive device approach a target voltage, based on a feedback voltage at the feedback node. The higher the load-compensation signal the higher the target voltage.03-07-2013
20130057233POWER MANAGEMENT SYSTEM APPLIED TO A SATELLITE DOWN CONVERTER AND METHOD THEREOF - A power management system applied to a satellite down converter includes a direct current voltage/direct current voltage converter and a detector. The direct current voltage/direct current voltage converter is used for receiving a signal of at least one set-top box. The detector is used for receiving the signal of the at least one set-top box, and generating a control signal to the direct current voltage/direct current voltage converter and a low noise main circuit according to the signal of the at least one set-top box. The low noise main circuit turns off circuits not in use within the low noise main circuit temporarily according to the control signal, and the direct current voltage/direct current voltage converter adjusts a current and/or a voltage generated by the direct current voltage/direct current voltage converter according to the control signal and/or the circuits temporarily not in use within the low noise main circuit.03-07-2013
20090267574SYSTEMS AND METHODS FOR PRODUCING A SUBSTANTIALLY CONSTANT OUTPUT VOLTAGE IN A POWER SOURCE BOOST SYSTEM - Systems and methods for producing a substantially constant output voltage in a power source boost system are provided. A power supply boost circuit includes an output node for supplying an output voltage, a feed forward loop configured to be coupled to a load and a power source, and a feedback loop including a voltage limiter coupled to the feed forward loop and the output node. One power source boost system includes the above power source boost coupled to a load and a power source. A method includes the steps of comparing, via a feedback loop, a constant voltage to a reference voltage, and stabilizing a power source boost system over a range of input voltages and load variations. The stabilizing step includes the step of limiting, via a limiter, a voltage supplied to a feed forward loop to a predetermined range of voltages based on the comparing step.10-29-2009
20110012571LOAD DRIVING APPARATUS - A load driving apparatus is provided. The load driving apparatus is configured to output an electrical signal to a load. The load driving apparatus includes a driver and an average voltage/current detector. The driver receives an input voltage and a control signal. The driver tunes the electrical signal according to the control signal. The average voltage/current detector receives the electrical signal outputted to the load and generates the control signal by comparing the electrical signal and a reference signal.01-20-2011
20130063102CONSTANT TIME CONTROLLER AND CONTROLLING METHOD FOR SWITCHING REGULATOR - The present invention relates to a constant time controller, controlling method thereof, and a switching regulator. In one embodiment, a controlling method for a switching regulator, can include: (i) detecting an output voltage and an inductor current of the switching regulator; (ii) determining if there is a transient change on a load of the switching regulator by using the output voltage and a first reference voltage; (iii) generating a control signal using the output voltage, the inductor current, and a second reference voltage; (iv) controlling a switch of the switching regulator to maintain the output voltage substantially constant when no transient change is determined on the load; and (v) deactivating the control signal to keep the inductor current changing along with a variation tendency of an output current of the switching regulator when a transient change is determined on the load.03-14-2013
20130063101METHOD AND APPARATUS FOR IMPLEMENTING A PROGRAMMABLE HIGH RESOLUTION RAMP SIGNAL IN DIGITALLY CONTROLLED POWER CONVERTERS - A system and method for controlling a power converter includes a digital-to-analog converter (DAC) and ramp generator for generating a reference current command. The DAC is configured to decrement (or increment) to a next state after a fixed number of clock pulses have occurred. The reference current command controls an output of the power converter. Means are provided for delaying an output of the DAC for a number of clock pulses less than the fixed number to increase a resolution of the DAC.03-14-2013
20130063100DC/DC Converter, Method for Providing an Output Voltage on the Basis of an Input Voltage and Computer Program - A DC/DC converter includes a switch mode converter for providing an output voltage based on an input voltage and a drive signal generator configured to to provide a drive signal for the switch mode converter. The drive signal generator is configured to switch between a non-pulse-skipping mode and a pulse-skipping mode. Moreover, the drive signal generator is configured to adapt a setting of a pulse generation such that a length of a first pulse following a pulse skipping is larger than a minimum length of a pulse in the non-pulse-skipping mode.03-14-2013
20090237041ELECTRIC CURRENT MEASUREMENT APPARATUS, VOLTAGE MEASUREMENT APPARATUS AND POWER SUPPLY APPARATUS - An electric current measurement apparatus for measuring an electric current of each electrode of an electron tube includes a transformer, a detection resistor connected in an ampere meter route for measurement, a voltage detection unit for detecting electric potential difference of the detection resistor and outputting pulse signals corresponding to the detected electric potential difference, a switching part for providing a short circuit of the secondary winding according to the pulse signals, and a measurement current value output unit. The measurement current value output unit measures pulse attribute of pulse-shape signals which are induced on the primary winding of the transformer caused by the short circuit of the secondary winding, and outputs a value of electric current flowing through the detection resistor with referring to a predetermined relationship between a value of the electric current flowing through the detection resistor and the pulse signals generated in the voltage detection unit.09-24-2009
20090237040 FAMILY OF CURRENT/POWER-EFFICIENT HIGH VOLTAGE LINEAR REGULATOR CIRCUIT ARCHITECTURES - Power efficient power supply regulator circuits are disclosed. The circuits are configured to modify their overhead current according to current load. This is particularly advantageous for use in display devices with widely varying current loads. Such displays include bi-stable displays, such as interferometric modulation displays, LCD displays, and DMD displays.09-24-2009
20130162227STEP-DOWN POWER SUPPLY CIRCUIT - A power supply has first and second reference voltage sources; a step-down voltage generator, including a transistor supplied with a first voltage, a resistor string between the transistor and a second voltage, and an op-amp which controls the transistor, and outputting the voltage at a first node among nodes in the resistor string; switches, coupled to the nodes; a comparison circuit, which compares the voltage at a common node the switches coupling in common with the second reference voltage source; and a calibration control circuit, which selects any switch according to a comparison result to calibrate. During calibration, the calibration control circuit couples a second node among the nodes to a non-inverting terminal of the op-amp, and the first reference voltage source to an inverting terminal of the op-amp, and after calibration, couples the common node to the non-inverting terminal, and the second reference voltage source to the inverting terminal.06-27-2013
20110221405METHODS AND APPARATUS FOR CALIBRATION OF POWER CONVERTERS - Methods and apparatus for a power regulator according to various aspects of the present invention may comprise a sensor adapted to generate a measurement of a voltage or a current. A memory may store a correction parameter that corresponds to the measurement, and a correction system may be adapted to adjust the measurement according to the correction parameter.09-15-2011
20120235650DC-OFFSET CORRECTION CIRCUIT - A DC-offset correction circuit for a target circuit with an output terminal and a feedback input terminal. The DC-offset correction circuit includes an obtaining module and a correction module. The obtaining module obtains a DC-offset voltage from the output terminal. The correction module includes a first charging switch, a first inductor connected to the first charging switch in order from the output terminal to the feedback input terminal, and a first charging capacitor connected between ground and the node of the feedback input terminal and the first charging switch. When the voltage of the feedback input terminal is less then the DC-offset voltage, the correction module closes the first charging switch. When the voltage of the feedback input terminal is equal to the DC-offset voltage, the correction module opens the first charging switch.09-20-2012
20130162226Dynamic Voltage Adjustment Device and Power Transmission System Using the Same - The present invention discloses a dynamic voltage adjustment device for dynamically adjusting an output voltage of a power transmission system which generates the output voltage according to a feedback signal and a reference signal and transmits the output voltage to a remote load via a transmission line to generate a load current. The dynamic voltage adjustment device comprises a first signal terminal, for receiving a first signal corresponding to a forward transmission voltage drop of the transmission line; a second signal terminal, for receiving a second signal corresponding to a reverse transmission voltage drop of the transmission line; a third signal terminal for receiving a reference voltage; a feedback circuit, for generating a feedback signal according to the first signal; and a adder circuit, for generating the reference signal according to the second signal and the reference voltage.06-27-2013
20120268087IDEALIZED SOLAR PANEL - A solar panel is constructed by electrically connecting one or more banks of solar cells in series, wherein each cell in each bank is electrically connected in series. In some aspects the cells are a quarter of typical full size cells in the direction of current flow. A module senses and controls small signal conduction and total conduction of the panel such that reverse current conduction of a weak or partially shaded cell is prevented, thereby allowing the panel to be constructed without bypass diodes. In some aspects the module prevents damage to the panel by an external inverter's maximum power point experiments; in other aspects the module itself provides maximum power point control.10-25-2012
20080303491SWITCHED-MODE POWER SUPPLY QUASI-RESONANT CONVERTER, SWITCH CONTROL CIRCUIT CONTROLLING SWITCHING OPERATIONS OF SWITCHED-MODE POWER SUPPLY QUASI-RESONANT CONVERTER, AND INPUT SIGNAL PROCESSING CIRCUIT CONNECTED TO CONTROL INTEGRATED CIRCUIT OF SWITCH CONTROL CIRCUIT - Aspects of the invention relate to a Switched-Mode Power Supply (SMPS) quasi-resonant converter, a switch control circuit controlling switching operations of the SMPS quasi-resonant converter, and an input signal processing circuit connected to a control Integrated Circuit (IC) of the switch control circuit. The SMPS quasi-resonant converter includes a switch and the switch control circuit. The switch control circuit includes a control integrated circuit (IC) to control operation of the switch; a Zener diode connected to an input terminal of the control IC; and a diode connected in series with the Zener diode.12-11-2008
20090189574SIMPLIFIED MAXIMUM POWER POINT CONTROL UTILIZING THE PV ARRAY VOLTAGE AT THE MAXIMUM POWER POINT - A converter system adapted to be connected between a photovoltaic power source and a load comprises a converter circuit, a control circuit, and a PWM generator circuit. The converter circuit is operatively connected to transfer energy from the photovoltaic power source to the load. The control circuit generates a raw control signal based on at least a voltage generated by the photovoltaic power source. The PWM generator circuit is operatively connected to the converter circuit and generates a PWM switch signal based on the raw control signal. The converter circuit transfers energy from the photovoltaic power source to the load based on the PWM switch signal.07-30-2009
20110279098SWITCHING SCHEME FOR STEP UP-STEP DOWN CONVERTERS USING FIXED FREQUENCY CURRENT-MODE CONTROL - Novel circuitry and methodology for controlling a step up-step down switching regulator that produces a regulated output signal at an output node in response to an input signal at an input node, and has an inductive device, a plurality of switching circuits for providing connection of the inductive device to the input and output nodes and a ground node, and a switch control circuit for driving the switching devices so as to enable the power supply system to operate in a boost mode to increase the input signal, in a buck mode to decrease the input signal, and in a buck-boost mode when a difference between the input signal and the output signal is within a predetermined range. Buck-boost latch circuitry is provided for latching a transition between the buck mode and the buck-boost mode, or between the boost mode and the buck-boost mode based on a predetermined condition.11-17-2011
20090189573METHOD FOR REGULATING A VOLTAGE AND CIRCUIT THEREFOR - A voltage regulator having an overload protection circuit and a method for protecting against an output voltage being less than a predetermined level. The voltage regulator has an overload protection circuit coupled between a feedback network and a regulation section. A power factor correction circuit is connected to the regulation section. An output voltage from the power factor correction circuit is fed back to the feedback network, which transmits a portion of the output voltage to the overload protection circuit. If the output voltage is less than the predetermined voltage level, a transconductance amplifier generates a current that sets an overload flag. Setting the overload flag initiates a delay timer. If the delay exceeds a predetermined amount of time, the overload protection circuit shuts down the voltage regulator.07-30-2009
20120187925DETECTION OF INSUFFICIENT SUPPLIED POWER - A method, apparatus, and device provide for the detection of insufficient supplied power supplied to a device. A current multiplier of the device, operable as a voltage regulator, is coupled to the power source, receives a clock signal, and generates a control signal. A digital counter, clocked by the clock signal and reset by the control signal, generates an overflow output in response to an overflow condition of the digital counter that indicates that the current sourcing capability of the power source has fallen below a current threshold of the device. A compensatory response by the device in response to the detection of insufficient supplied power may be provided as well.07-26-2012
20090167261CURRENT MEASURING DEVICE - An embodiment of a current measuring device, defined by a gain, including an amplification module including an input for receiving a control signal, an input connected to an output node, brought to an output potential and traversed by an output current, a feedback node traversed by a mirror current associated with the output current by a proportionality coefficient equal to the gain, and an output traversed by the mirror current, and capable of bringing the feedback node to the output potential in response to the control signal. The measuring device also includes a gain modification module, mounted between the first potential and the feedback node, including at least one input for receiving an activation signal, and capable of modifying the value of the gain in response to an activation signal.07-02-2009
20110267014ELECTRICAL LOAD DRIVE DEVICE - An electrical load drive device can reduce the offset voltage without requiring means of initializing the charge of an integrating capacitance or a terminal for offset correction. The input selector of the electrical load drive device selects an input signal or no signal, and outputs an input selection signal. An integrator integrates the input selection signal and outputs the integrated signal. The load driver produces a load drive signal by pulse width modulation and amplification of the integrated signal. A first path is a path for feeding back the load drive signal. A second path is a path for feeding back the integrated signal. The path selector produces a feedback signal by selecting the first path or the second path. The offset correction signal generator produces an offset correction signal for adjusting the integrated signal so that the feedback signal offset decreases. The integrator adds and integrates the feedback signal with the input selection signal, and adjusts the integrated signal based on the offset correction signal.11-03-2011
20090146621METHODS AND APPARATUS FOR CURRENT SENSING IN MUTUALLY COUPLED INDUCTORS - Methods and apparatus for current sensing in mutually coupled inductors according to various aspects of the present invention may operate in conjunction with a control system adapted to control current through the inductors and multiple current sensors connected to the control system. Each current sensor may comprise a series combination comprising a capacitor and a resistor. The series combination may be connected in parallel with one of the inductors, and may be adapted to generate branch inductor current signals according to a sensed current in the connected inductor. In addition, a coupling capacitor may be coupled between at least two of the current sensors to compensate a time constant of the current sensor for mutual coupling inductance between the inductors.06-11-2009
20080290847METHOD AND APPARATUS FOR CONTROLLING A SUPPLY CURRENT FOR A CIRCUIT OR A PLURALITY OF CIRCUIT BLOCKS - A method for controlling a supply current for a circuit comprises setting a target value of a quantity related to a supply current, said target value being different from a presently established value of the quantity, and adjusting the quantity until a value of the quantity corresponds to the target value. A method for controlling a supply current to a plurality of circuit blocks comprises providing a plurality of partial supply currents to the plurality of circuit blocks, setting at least one target value of a quantity related to at least one of the partial supply currents, checking whether a predetermined condition which depends on the at least one set target value is achieved, and if the predetermined condition is not achieved, changing at least one among the at least one target values and the at least one partial supply currents to achieve the predetermined condition.11-27-2008
20090309557CONTROL CIRCUIT OF DC-DC CONVERTER, DC-DC CONVERTER AND CONTROL METHOD OF DC-DC CONVERTER - A DC-DC converter or the like capable of generating a stable output voltage is provided. A control circuit 12-17-2009
20090309556DEVICE-UNDER-TEST POWER MANAGEMENT - One embodiment of the present invention includes a system for managing power to a plurality of devices-under-test (DUTs). The system comprises a DUT test system configured to perform at least one test associated with operation of the DUTs and to monitor current associated the at least one test of the plurality of DUTs. The DUT test system can communicate an instruction to a subset of the plurality of DUTs to cancel the at least one test if the monitored current is greater than a predetermined threshold. Each of the plurality of DUTs can comprise restart logic configured to restart the at least one test of the subset of the plurality of DUTs after being cancelled in response to the instruction.12-17-2009
20100141222LOAD TRANSIENT SENSING CIRCUIT FOR A POWER CONVERTER - The present invention provides a circuit for sensing a load transient of a power converter. The circuit comprises an input terminal coupled to the voltage output terminal of the power converter through a resistor. The circuit further comprises a comparator for comparing an input voltage with a reference voltage to generate a load transient signal to control output voltage parameters of the power converter. The circuit has a simple circuit structure and can promptly sense the load transient of the power converter to thereby control various output parameters.06-10-2010
20110133705INTEGRATED CIRCUIT FOR SYSTEM CALIBRATION - The present invention discloses an integrated circuit for system calibration, applicable to a power supply, comprising: a comparison module, having a feedback input end coupled to a feedback signal and a reference input end coupled to an analog reference signal for delivering a status signal; a detection and control module, for generating a reference signal and a calibration value according to the status signal, wherein the calibration value is derived from the reference signal at an instant when the status signal changes state, and the calibration value is stored into a calibration value register; a memory module, for receiving, storing and outputting the calibration value; and a reference signal generator, receiving the calibration value to provide the analog reference signal. The present invention can therefore be used to automatically calibrate a system with fewer external components to provide qualified systems.06-09-2011
20100079119SYSTEM AND METHOD FOR LIMITING CURRENT OSCILLATION - A system and method for limiting current oscillation in power supplies. A method for operating a power supply comprises entering a current limitation mode, setting a current limit for a current flowing through a power switch of the power supply, and in response to determining a current limit has changed from a high value to a low value or detecting an occurrence of a fault condition, setting the current limit to the low value, and locking the current limit so that the current limit does not change. The method further comprises providing a current to a load coupled to the power supply.04-01-2010
20080211466Voltage Generators Implementing Boosting Schemes for Generating Boosting Voltages and Related Liquid Crystal Displays (LCDS) and Methods - A voltage generators is provided including a boosting circuit and a boosting control circuit. The boosting circuit is configured to boost a power voltage to generate first through fourth voltages. The boosting control circuit is configured to control the boosting circuit to enable the first through fourth voltages to be generated in sequence, such that when a current voltage of the first through fourth voltages is boosted to a predetermined level, a voltage next to the current voltage is generated. Related liquid crystal displays and methods are also provided.09-04-2008
20110199060VOLTAGE AND CURRENT REGULATION METHOD FOR A TWO-STAGE DC-DC CONVERTER CIRCUIT - A control methodology for a two-stage PWM DC-DC conversion system, with transformer-isolation, in which the converter circuit input voltage is compared to a set voltage calibrated as a function of the desired output voltage and the maximum voltage conversion ratio provided by the second-stage converter. When the input voltage is above the set voltage, the second-stage converter is controlled to provide both output voltage regulation during normal operation and output current limiting during over-current conditions. However, when the input voltage is below the set voltage, the first-stage converter is controlled to provide output voltage regulation with minor output current limiting, and the second-stage converter is controlled to provide extended output current limiting independent of the input voltage.08-18-2011
20120194145SWITCHING MODE POWER SUPPLY WITH PREDICTED PWM CONTROL - The present technology discloses a switching mode power supply with predicted PWM control. In one embodiment, the switching mode power supply monitors the slew rate of COMP signal which represents the output voltage of the switching mode power supply. When the load steps up, the ON state of the power stage is prolonged; when the load steps down, the power stage is turned off earlier.08-02-2012
20100315048VOLTAGE STEP-UP CIRCUIT - The present invention relates to a voltage step-up circuit (12-16-2010
20090295343Buck-boost switching regulator and control method thereof - The present invention discloses a buck-boost switching regulator, comprising: (1) a first loop including: a first and a second switch electrically connected with each other, the first switch having an end electrically connected with an input voltage, and the second switch having an end electrically connected with ground; and a first control circuit controlling the operation of the first and the second switch; (2) a second loop including: a third and a fourth switch electrically connected with each other, the third switch having an end electrically connected with ground, and the fourth switch having an end electrically connected with an output voltage; and a second control circuit controlling the operation of the third and the fourth switch; and (3) an inductor electrically connected between a node between the first and the second switch, and a node between the third and the fourth switch.12-03-2009
20090261789FREQUENCY-CHANGING VOLTAGE REGULATION CIRCUIT - The present invention discloses a frequency-changing voltage regulation circuit, which applies to a power supply device that has a booster unit and a power conversion unit. The booster unit modulates an input power and converts the input power into a boosted power. The boost control circuit is coupled to the frequency-changing voltage regulation circuit of the present invention. The frequency-changing voltage regulation circuit comprises: a voltage detection circuit and a frequency setting circuit. The voltage detection circuit detects the input power sent to the booster unit and generates an input level signal according to the value of the input power. The frequency setting circuit generates a reference frequency signal corresponding to the input level signal and uses the reference frequency signal to modulate the frequency that the booster unit performs power conversion.10-22-2009
20130099759ELECTRIC POWER STEERING APPARATUS - An electric power steering apparatus includes a power supply and a power supply management unit that controls an operation of the power supply. The power supply includes a main power supply, an auxiliary power supply connected in series to the main power supply, a boost circuit that charges the auxiliary power supply by boosting an output voltage of the main power supply and applying the boosted output voltage to the auxiliary power supply, and a voltage sensor that detects an output voltage of the auxiliary power supply. When a reduction amount per unit time of the output voltage detected by the voltage sensor exceeds a voltage reduction amount over a predetermined time, the power supply management unit determines that an abnormality has occurred in an output destination of the power supply.04-25-2013
20100102785Transient Processing Mechanism for Power Converters - Hysteretic performance with fixed frequency may be achieved in controlling a power/voltage regulator, by adapting fixed frequency PWM (Pulse Width Modulation) to current-mode hysteretic control. In steady state, the current waveform may be inferred without having to measure the current. In current-mode control, the current may be adjusted proportional to the error voltage. The change in load current may be related to the change in duty-cycle, and the change in duty-cycle may be related to the error voltage, with the change in duty-cycle expressed as a function of the error voltage, to establish current-mode control. This current-mode control may be adapted to perform current-mode hysteretic, if instead of duty-cycle, the same duty-cycle or current shift was effected by a change in phase. A fraction of ripple current (Forc) may be defined as a specified fraction of the peak-to-peak ripple current, establishing a linear relationship between the Forc and the ripple current.04-29-2010
20080246446METHOD AND APPARATUS FOR ON/OFF CONTROL OF A POWER CONVERTER - A power converter control method and apparatus is disclosed. An example power converter controller according to aspects of the present invention includes feedback sampling circuitry to be coupled to an output of a power converter. The feedback sampling circuitry is to generate feedback signal samples after a conduction of a power switch is terminated during enabled switching cycles. Switch conduction control circuitry is coupled to the feedback sampling circuitry. The switch conduction circuitry includes switch conduction enable circuitry that is coupled to enable or disable the conduction of the power switch during a switching cycle in response to the feedback signal samples. The power switch is caused to conduct during at least a portion of an enabled switching cycle and prevented from conducting during an entirety of a disabled switching cycle. Switch conduction termination circuitry is also optionally included in the switch conduction circuitry and is coupled to terminate the conduction of the power switch during enabled switching cycles in response to the current through the power switch. Switch conduction scheduling circuitry is also included in the switch conduction circuitry and is coupled to determine a varying number of future enabled and disabled switching cycles in response to the feedback signal samples from a present switching cycle and one or more past switching cycles.10-09-2008
20080246448Sleep mode control circuit and method for a DC/DC switching power supply system - A sleep mode control circuit and method are provided to pull high the error signal of a DC/DC switching power supply system to a target level when the switching power supply system is in a sleep mode, such that the switching power supply system can be more rapidly waked up from the sleep mode to its normal mode once the loading of the switching power supply system increases. A threshold is given for the output signal of the comparator that is used to determine the duty for the switching power supply system, and the error signal in the sleep mode is thus maintained slightly lower than the minimum voltage for the error signal in the normal mode.10-09-2008
20120091975METHOD AND APPARATUS FOR SUPPLYING POWER TO A CONNECTION DEVICE - The present invention concern a method and an apparatus for stabilizing power supply to a connection device, such as an ONU. The power is supplied via wires, such as telephone wires, using DC voltage and the wires having a first conductor, such as a ring conductor and a second conductor, such as a tip conductor.04-19-2012
20080238376VOLTAGE REGULATOR WITH HIGH VOLTAGE PROTECTION - A method for regulating a voltage in an integrated circuit device includes providing a first regulated output based upon a first voltage input range and subsequently receiving the first regulated output and providing a second regulated output based upon a second voltage input range of the first regulated output. A circuit is further provided that operates accordingly. Additionally, a clipper circuit is provided at the input to protect for over voltage conditions that may results, for example, from a charging battery to cause an output voltage of the battery to substantially exceed ordinary output voltage levels.10-02-2008
20080238375SYSTEMS AND METHODS FOR REDUCING EMI IN SWITCH MODE CONVERTER SYSTEMS - Switch mode power converter system and method thereof. The system includes one or more isolation boxes including at least a first isolation box, an input primary winding for receiving an input signal for the switch mode power converter system, and an output secondary winding for generating an output signal for the switch mode power converter system. The switch mode power converter system is configured to convert the input signal to the output signal. One of the input primary winding and the output secondary winding is substantially enclosed in the first isolation box, and the other of the input primary winding and the output secondary winding is not enclosed in the first isolation box. The first isolation box is conductively connected to a constant-voltage source.10-02-2008
20080284388METHODS AND APPARATUS TO HANDLE A REFERENCE VOLTAGE CHANGE IN A DIGITAL POWER SUPPLY - An example disclosed method to handle a reference voltage change in a digital power supply includes receiving a first value associated with a first reference voltage having a first voltage magnitude at a digital signal processor of a digital power supply, comparing the first reference voltage to an output voltage of the digital power supply, controlling the digital power supply based on the comparison between the first reference voltage and the output voltage, receiving a second value associated with a second reference voltage having a second voltage magnitude, determining that the first voltage magnitude is different than the second voltage magnitude, in response to determining that the second voltage magnitude is different than the first voltage magnitude, determining a voltage profile, and controlling the digital power supply based on the voltage profile.11-20-2008
20080309298POWER CONVERTER WITH A FEEDBACK CONTROLLER - A power converter with a feedback controller includes a converter body with an input end for an input voltage, an output end for an output voltage, a controller with a feedback device, and a connector for connection with the output end of the converter body and with an electric appliance. The circuit of the converter body converts an input voltage to an output voltage. A controller is connected in circuit to the converter body and includes a circuit for regulating the voltage for a desired system output. The feedback device connects to the output end of the converter body. The output voltage is adjustable only when the controller receives an output voltage as a feedback from the feedback device. The controller is not triggered and hence an output voltage is not adjustable when the connector is engaged with the output end of the converter body.12-18-2008
20090033297SINGLE-BOARD POWER SUPPLY STRUCTURE AND METHOD FOR PROVIDING POWER SUPPLY - A single-board power supply structure and a method for providing a power supply are provided. An operational processor sends control signals capable of controlling the output of the power supply to a DC/DC converter. The DC/DC converter converts a received bus voltage into a required power supply voltage according to the received control signals. The operational processor may further monitor the output of the power supply and report the monitored result to a connected upper-layer machine, and may also control the sequence of a plurality of the outputs of the power supply converted by the DC/DC converter by controlling the time for sending the control signals. The structure and the method provided by the present invention can both uniformly, timely, and effectively monitor the output of the single-board power supply.02-05-2009
20100201331Voltage regulator - To provide a voltage regulator having improved response characteristics in case of overshoot. The voltage regulator includes: a transistor (08-12-2010
20130021006METHOD AND APPARATUS FOR MULTI-PHASE POWER TRANSFER - A method and apparatus for power conversion. In one embodiment, an apparatus comprises a power conversion module for converting a first current to a second current, wherein the first current or the second current is an AC current having at least two phases; and a waveform modification module, coupled to the power conversion module, for modifying the AC current to generate a modified AC current, wherein each phase of the modified AC current has a value of zero at the beginning of an AC line cycle.01-24-2013
20090309558RF ADAPTER FOR FIELD DEVICE WITH VARIABLE VOLTAGE DROP - A wireless adapter for use in a two-wire process control loop includes wireless communication circuitry and first and second terminals configured to couple in series with the two-wire process control loop. A regulator having a regulated input is coupled to the first terminal and an output. A shunt is coupled to the output of the regulator and is configured to provide power to the wireless communication circuitry. A feedback circuit is configured to control current flowing from the regulator to the shunt as a function of a loop current flowing through the two-wire process control loop.12-17-2009
20110006742Dynamic Energy Harvesting Control - The invention provides control methods and systems for harvesting energy from a variable-output power apparatus. One or more variable-output power elements configured for producing energy are used as input to a power regulation circuit operably coupled between the power elements and a load. One or more power signals in the circuit are monitored and the power regulation circuit output is dynamically adjusted based on the one or more monitored power signals. According to aspects of the invention, the output duty cycle or frequency may be adjusted in response to monitored parameters.01-13-2011
20130119951POWER SUPPLY CIRCUITRY AND ADAPTIVE TRANSIENT CONTROL - A power supply system includes a PID control circuit, a signal shaping circuit, and a PWM control circuit. The PID control circuit generates a signal based on an error voltage of the power supply system. The signal shaping circuit receives and converts the signal outputted from the PID control circuit into a linear control signal. To reduce cost, the shaping circuit can include a piecewise linear implementation. During non-transient load conditions, the PWM control circuit utilizes the linear control signal outputted from the signal shaping circuit to adjust a switching period of a power supply control signal. The switching period of the power supply control signal is maintained within a desired range. During transients, settings of the PID control circuit are modified to provide a faster response. The switching period of the power supply control signal may be adjusted outside of the desired frequency range.05-16-2013
20120105026SAFE ELECTRIC POWER REGULATING CIRCUIT - A safe electric power regulating circuit is connected between a power supply and a voltage boost/buck circuit to regulate the output voltage by the power supply to have a target voltage through the voltage boost/buck circuit. A switching device includes a switch unit, a first diode, and a first capacitor. The switch unit includes a first end, a second end, and a third end. The first end is connected to the power supply, and the second end is connected to the voltage boost/buck circuit. The switch unit is controlled to connect the third end to the first end or the second end. The first diode has an anode connected to the first end of the switch unit. The first capacitor has one end connected to the third end of the switch unit and the other end connected to circuit ground.05-03-2012
20120105025FREQUENCY COMPENSATION CIRCUIT FOR VOLTAGE REGULATOR - A frequency compensation circuit for a voltage regulator is provided in embodiments of the present invention. The frequency compensation circuit mainly includes a first transconductance operational amplifier circuit, a second transconductance operational amplifier circuit, and a third transconductance operational amplifier circuit cascaded sequentially, where the first transconductance operational amplifier circuit receives an input voltage to be compensated, and the third transconductance operational amplifier circuit outputs a compensated voltage; and a primary transconductance negative feedback compensation circuit, connected in parallel between an output end of the second transconductance operational amplifier circuit and an output end of the third transconductance operational amplifier circuit, and a secondary transconductance negative feedback compensation circuit, connected in parallel between an output end of the first transconductance operational amplifier circuit and the output end of the third transconductance operational amplifier circuit.05-03-2012
20120105024Feedback Regulating Circuit - A feedback regulating circuit provides a regulated voltage to a multi-output circuit that outputs a plurality of output voltages. The feedback regulating circuit includes a voltage control unit, coupled to the plurality of output voltages, for generating a first voltage according to the plurality of output voltages and outputting a voltage control signal according to the first voltage; and a reference voltage generator, coupled to the voltage control unit, for receiving the voltage control signal and generating a reference voltage according to the voltage control signal, with the reference voltage being fed back to the multi-output circuit to regulate voltage to a high degree of accuracy.05-03-2012
20110221404SSPC WITH ACTIVE CURRENT LIMITING - A power distribution module has an input line to receive power from a DC power source. A switch selectively opens the input line and blocks supply of power from the input line to an output line to be connected to a DC load. A solid state power control controls a gate drive for the switch. The solid state power control is operable to distinguish between a pre-charge mode, at which current is rushing to supply a capacitor in the downstream DC load, and a short circuit mode, at which a short circuit exists.09-15-2011
20090015216Input regulated DC to DC converter for power scavenging - A method of scavenging power in a circuit having a power source generating electric current includes connecting a power scavenging device having an input terminal pair and an output terminal pair to the circuit via the input terminal pair, dynamically regulating a voltage drop across the input terminal pair of the power scavenging device, harvesting electrical energy available at the regulated voltage drop from the electric current flowing through the first input terminal pair of the power scavenging device, and providing the harvested electrical energy at the output terminal pair of the power scavenging device.01-15-2009
20090015215Dynamic selection of oscillation signal frequency for power converter - In one embodiment, a method is provided for providing power to a radio-frequency (RF) component capable of operating under multiple communication standards, wherein each standard has a respective operating frequency. The method includes: receiving a communication standard signal indicative of which of the multiple communication standards the RF component is currently operating under; selecting a frequency for a power converter system in response to the communication standard signal, wherein the selected frequency is higher than a baseband frequency of the current communication standard for the RF component; generating an oscillation signal having the selected frequency; and operating the power converter system with the oscillation signal having the selected frequency to provide power to the RF component, wherein the operation of the power converter system causes minimal interference with the RF component operating under the current communication standard01-15-2009
20090243564ELECTRIC CURRENT MONITORING DEVICE - An electric current monitoring device is provided to be used in conjunction with a measuring instrument that converts a physical quantity measured thereby to a signal current and outputs the signal current to a two-wire transmission line. The electric current monitoring device includes an electric current detector inserted in the transmission line for measuring an electric current value of the signal current outputted to the transmission line, and a supply voltage generator inserted in the transmission line for outputting a voltage generated due to the flow of the signal current. The electric current detector is driven by the voltage outputted from the supply voltage generator.10-01-2009
20090230932Quick response width modulation for a voltage regulator - A per-phase quick response generation circuit generates a quick response signal to determine a quick response pulse to be inserted into a pulse width modulation signal of the corresponding phase. The quick response pulse will force the upper power switch of the corresponding phase on to increase the current supply ability during load transition. A multi-phase voltage regulator with the quick response generation circuit can have different quick response pulse widths for the interleaved phases, so as to decrease the current imbalance period of the voltage regulator after load transition.09-17-2009
20090212750METHOD FOR OPERATING AN INVERTER HAVING A STEP-UP DEVICE CONNECTED UPSTREAM - The invention relates to a method for operating an inverter comprising a step-up device which is upstream-connected by means of an intermediate circuit and is connectable to a direct-current source with a variable reference sampling current wherein said inverter and the step-up device are provided with an efficiency optimizing working area, respectively. When the variable reference sampling current is raised and the step-up device approaches a pulse duty factor value, the intermediate circuit voltage is reduced and the variable reference sampling current is stabilized, said intermediate circuit voltage is re-raised. When the direct-current source is in a permanent operational state, the inverter and the step-up device operate in the efficiency optimizing working area thereof, respectively.08-27-2009
20090200996Controlling power supply in radio transmitter - A switched mode power supply unit realized by an integrated circuit comprising a control circuit controlling the operation of the switched mode power supply unit, wherein the control circuit is configured to provide a plurality of different circuit configurations for different operating environments. The circuit configuration for the control circuit is defined by a control signal received by the control circuit.08-13-2009
20130214748POWER DEVICE CONTROL CIRCUIT AND POWER DEVICE CIRCUIT - A power device control circuit enters a gate driving signal into a gate terminal of a power device. The power device control circuit includes: a control signal input circuit that receives a power device control signal for control of the power device; a driving system control circuit connected to the control signal input circuit; a driving circuit with a plurality of driving systems, the driving circuit driving the power device in response to a driving circuit control signal received from the driving system control circuit; and a timer circuit that makes switching between the driving systems in response to the driving circuit control signal after elapse of a given period of time from receipt of a predetermined signal, specifically the power device control signal, thereby changing the driving power of the driving system control circuit to drive the power device.08-22-2013
20090108818SWITCHING POWER SUPPLY CIRCUIT - According to the present invention, an auxiliary power supply 04-30-2009
20090021226SEMICONDUCTOR INTEGRATED CIRCUIT AND SENSOR DRIVING/MEASURING SYSTEM - In a sensor driving/measuring system, specifications required by a sensor which requires a high applied voltage are implemented with const increase suppressed. A semiconductor integrated circuit for use in a sensor driving/measuring system driven by a battery includes: a sensor driver for outputting a given voltage to be applied to a sensor; a measuring circuit for receiving and measuring a voltage obtained, through current-voltage conversion, from a current generated in the sensor; and a booster. The booster boosts a given pre-boost voltage to obtain a boosted voltage and supplies the boosted voltage as a power supply voltage to the sensor driver and the measuring circuit.01-22-2009
20080315847PROGRAMMABLE FLOATING GATE REFERENCE - A system includes a controllable voltage generator to generate a power supply voltage. The system also includes a system controller to determine a voltage level associated with the power supply voltage, and prompt the controllable voltage generator to generate the power supply voltage. The system includes a floating gate reference device to generate an absolute voltage reference based, at least in part, on the voltage level associated with the power supply voltage. The system can also include analog circuitry to perform one or more electrical operations responsive to the absolute voltage reference from the floating gate reference device.12-25-2008
20120194146Adaptive Control of Electrical Devices to Achieve Desired Power Use Characteristics - A system and method is provided for energizing and managing digitally-controlled devices at different levels of granularity, to achieve desired power use characteristics. At the lowest level, a digitally-controlled device is energized using a variable load-sensing adaptive control (VLSAC). Operation of the device is controlled using digital signals input to the device, so that limits on parameters, such as power consumption are met. A plurality of VLSACs can be coupled to a power distribution unit (PDU), which is controlled to achieve desired levels for selected parameters, set for the PDU. Multiple PDUs can be coupled to a power conversion and regulation unit (PCRU), which can be controlled by a master control to achieve a desired power profile for an entire facility, enabling the facility to meet requirements of a utility supplying the power and thus, reducing operational costs. The VLSACs and PCRU include high efficiency power sources having low distortion.08-02-2012
20100148734Apparatus for compnsating output voltage - An apparatus for compensating output voltage includes a DC-DC conversion IC, a step-up/down transforming circuit, a current detection resistor and a voltage feedback point, wherein in the step-up/down transforming circuit, the current detection resistor is connected in series to a ground end of the DC-DC conversion IC, and voltage drop is produced as supplying current flows through the current detection resistor, thereby utilizing the voltage drop to step up a reference voltage within the DC-DC conversion IC so that the DC-DC conversion IC can regulate output voltage of the step-up/down transforming circuit for a purpose of voltage compensation.06-17-2010
20100181971POWER SYSTEM HAVING A LOCAL SENSE CONTROL DOMINANT OVER A REMOTE SENSE CONTROL TO AVOID EFFECTS OF INTERCONNECTION FAILURE MODES - A power system is configured to provide a regulated voltage to an electrical load connected to a power source through at least one power line. The power system includes a first voltage control loop based on a remote sense signal indicative of voltage level at the load. The power system further includes a second voltage control loop based on a local sense signal indicative of a level of output voltage at the power source. The voltage level of the local sense signal is generally at a higher voltage level relative to the voltage level of the remote sense signal. Circuitry is configured to pass just the signal with the higher voltage level to ensure that the local sense control loop is a dominant control loop with respect to the remote sense control loop. This avoids effects on the power source from one or more failure modes that can occur in interconnections of the system.07-22-2010
20100188059CIRCUIT DEVICE - An insulating resin layer (07-29-2010
20100188060AREA AND POWER SAVING STANDARD CELL METHODOLOGY - A semiconductor integrated circuit including a circuit for adaptive power supply regulation and designed using a process that increases operating speed used for characterizing circuit operation at a slow corner. In some embodiments a slow corner voltage is set to a higher than expected level for timing analysis performed by automated design tools.07-29-2010
20100013447SWITCHING POWER SUPPLY CIRCUIT - A switching power supply circuit for generating an output voltage at an output node based on an input voltage at an input node includes a reference voltage generating circuit configured to generate a reference voltage such that during an initial start-up period of the reference voltage a voltage rise rate of the reference voltage within a first predetermined period from a start point of the initial start-up period and a voltage rise rate thereof within a second predetermined period immediately preceding an end point of the initial start-up period are smaller than a voltage rise rate thereof in a period between the first predetermined period and the second predetermined period, a coil disposed between the input output nodes, and a switch circuit configured to switch on and off to control current through the coil in response to comparison between the reference voltage and a voltage proportional to the output voltage.01-21-2010
20100013445COMPARATOR CONTROLLED CHARGE PUMP FOR NEGATIVE VOLTAGE BOOSTER - Charge pumps and methods for regulating charge pumps. The charge pump includes a voltage booster circuit and a voltage regulator circuit. The voltage booster circuit includes first and second input terminals that respectively receive a regulation voltage and an input voltage. The voltage booster circuit generates an output voltage having a polarity that is different from the input voltage. The output voltage is adjusted by the regulation voltage and provided to an output terminal. The voltage regulator circuit is coupled between the first input terminal and the output terminal of the voltage booster circuit. The voltage regulator circuit shifts the output voltage to a level shifted voltage and generates the regulation voltage responsive to the level shifted voltage.01-21-2010
20100176771Perturb voltage as a decreasing non-linear function of converter power - Methods, apparatus and media for controlling a switching circuit controlling an amount of power drawn from an energy converter, to optimize the amount of power drawn from the energy converter. An output voltage and an output current of the energy converter are measured to produce signals representing converter output voltage and current. Converter power is calculated from the product of the converter output voltage and current. A perturb voltage is calculated as a decreasing nonlinear function of the converter power. A new reference voltage signal representing a desired converter output voltage is produced in response to a previous reference voltage signal and the perturb voltage. The reference voltage signal is used by the switching circuit to adjust the power drawn from the converter to achieve the desired converter output voltage.07-15-2010
20100176772MULTIPHSE DC/DC CONVERTER - A multiphase DC/DC converter has multiple converter cells that are arranged in parallel to one another and clocked in a time-staggered manner. Equipped on the input side and/or output side of the converter cells is a voltage sensor or a current sensor. The latter is connected via an analog-digital converter to a separator, which is provided for separating the output signal of the analog-digital converter into voltage or current values associated with the individual phases of the converter. The separator is connected to a control system, which on the output side provides control signals influencing the clock signals of the converter cells.07-15-2010
20120139507HYSTERETIC VOLTAGE CONVERTER WITH OFFSET VOLTAGE CORRECTION - A hysteretic power converter wherein an additional adjustment circuit, implemented as an offset correction loop, adds an offset to the comparator detection function to reduce the difference between the average output voltage and the regulation set point voltage. The adjustment circuit lies outside the main hysteretic regulation loop and therefore does not substantially impact the response time of the hysteretic loop, and is slow acting responsive to a low pass filter.06-07-2012
20100225285Adaptive constant-voltage control circuit and adaptive power converter controller - An adaptive power converter controller coupled to a load and a power converter circuit is provided. The adaptive power converter controller has an adaptive voltage sensing unit and a converting control circuit. The adaptive voltage sensing unit is coupled to the load and output a voltage sensing signal according to a load current and a load voltage from the load. The converting control circuit is utilized for receiving the voltage sensing signal and comparing the voltage level of the voltage sensing signal with a current sensing signal, which is corresponding solely to the load current, so as to decide whether the power converter circuit is controlled according to the voltage sensing signal or the current sensing signal.09-09-2010
20100237837MINIMUM ON-TIME REDUCTION METHOD, APPARATUS, AND SYSTEM USING SAME - The present invention discloses a minimum on-time reduction method for a switching power conversion, comprising the steps of: generating a first reset signal and an over-supply pulse signal according to a current sensing signal and a reference signal; generating a blanking signal according to a count number of the over-supply pulse signal; and generating a second reset signal by performing Logic-AND operation on the first reset signal and the blanking signal. Furthermore, the present invention also provides a minimum on-time reduction apparatus for a power conversion, and a system using the minimum on-time reduction apparatus for a power conversion.09-23-2010
20090200998Buck switching regulator with improved mode transition and control method thereof - The present invention discloses a buck switching regulator with improved mode transition, and a method for controlling a buck switching regulator. The method comprises: providing a switching regulator including: an output power stage for converting an input voltage to an output voltage, the output power stage being controlled by a first PWM signal during a fixed-frequency PWM mode (FPWM mode), and being controlled by a first voltage signal during a pulse skipping mode (PSK mode), wherein the first PWM signal is generated according to the first voltage signal; and in a transition from the PSK mode to the FPWM mode, proving a second voltage signal as a starting point of the first voltage signal, the second voltage signal being substantially close to a target of the first voltage signal in the FPWM mode.08-13-2009
20090039839Fuel cell power supply device - A fuel cell power supply device capable of externally supplying electric power in a stable manner is provided. The fuel cell power supply device includes a fuel cell (02-12-2009
20090153108Power management efficiency using DC-DC and linear regulators in conjunction - A power management unit for improving power efficiency of an electronic device. The power management unit includes a first and a second stage power regulator and a control circuitry. The first stage power regulator includes a switching regulator to efficiently adjust an input voltage based on a feedback signal. The adjusted input voltage provides the second stage power regulator that includes low dropout voltage regulators with an input voltage close to its output. Thus, power dissipation in the second stage is reduced by reducing the voltage differential between the input and desired output voltages. The second stage turns on/off power to units of the electronic device. The control circuitry generates the feedback signal based on dropout voltages of the low dropout voltages, the desired output voltage and the adjusted input voltage. The largest dropout voltage is selected and adds it to the desired output voltage to generate the feedback signal.06-18-2009
20090153107METHOD AND APPARATUS FOR REGULATING ELECTRICAL POWER FROM A NON-PERPETUAL POWER SOURCE - A method and system for regulating electrical power from a non-perpetual power source. In one implementation, the method includes receiving a variable power output from the non-perpetual power source, wherein a power amplitude of the variable power output substantially varies over time; and generating a regulated current output or a regulated voltage output based in part on the variable power output received from the non-perpetual power source.06-18-2009
20110031944HIGH VOLTAGE LATCHING AND DC RESTORATION ISOLATION AND LEVEL SHIFTING METHOD AND APPARATUS - A device and method for dc isolation and level shifting includes a driver circuit powered by a first voltage range, a capacitor connected to the driver circuit, and a latching circuit connected to the capacitor. The latching circuit is powered by a second voltage range and is configured to restore and/or minimize charge loss of the capacitor during a voltage transition at the capacitor. A device and method for analog isolation and measurement configured to measure an analog voltage at a second potential without requiring analog circuits at the second potential. 02-10-2011
20090108817Method for actuation by boosting power source voltage - A method for actuation by boosting power source voltage includes: determining an overclocking range of an electronic device, setting a duty frequency of the electronic device, detecting actuation conditions of the electronic device, and switching actuation power value. First, get the upper limit of the duty frequency of the electronic device to determine the overclocking range of the electronic device; then determine the duty frequency of the electronic device after actuated, detect the electronic device to get an actuation power from a power source and determine whether the electronic device is started properly. If the electronic device is not started properly, alter the voltage of the actuation power, and determine again the actuation condition of the electronic device. By means of the aforesaid procedure the actuation power voltage value input to the electronic device can be regulated to actuate the electronic device.04-30-2009
20100295520REGULATION DEVICE FOR A CHARGE PUMP GENERATOR AND CORRESPONDING REGULATION METHOD - A regulation device may be configured for regulating an output voltage of a charge pump voltage generator. The regulation device may include a first regulation loop capable of generating and delivering, to a first input of the voltage generator, an input voltage depending on the difference between the output voltage and a first reference voltage. The regulating device may also include a charger capable of generating and delivering, to a second input of the voltage generator, a substantially constant charge voltage. An electronic device may include the regulation device.11-25-2010
20100301817METHOD FOR CONTROLLING ELECTRICAL POWER - Power output of a power generation system is controlled by measuring the output voltage of the system, dividing the measured voltage value into a target power value, then controlling the current provided by the generation system to the calculated value. In some embodiments the power generation system is connected to a grid.12-02-2010
20090243563POWER SUPPLY CIRCUIT AND TEST APPARATUS - Provided is a power supply circuit that supplies power to a load, including a power supply section that outputs a power supply current, a driver section that receives the power supply current from the power supply section and supplies the load with a load current that is consumed by the load, a capacitor section that is charged by the power supply section and that supplies the driver section with an auxiliary current when the load current is greater than the power supply current, and a transmission path that transmits the power supply current output by the power supply section to the driver section, wherein the capacitor section is disposed between the transmission path and a reference potential. The capacitor section is disposed between a transmission path and a reference potential. Also provided is a test apparatus including the power supply circuit.10-01-2009
20110018505Current Sensing Load Demand Apparatus and Methods - An apparatus supplies AC power to a load. The apparatus includes a set output terminals, a primary circuit, and a load sensing circuit. The primary circuit is electrically coupled to a source of AC power and to the output terminals for selectively providing power at a low voltage at the output terminals or electronically coupling the source of AC power directly to the output terminals. The load sensing circuit coupled to the primary circuit and the source of AC power for determining a resistance associated with the load at initial application of the load and controlling the primary circuit to electronically couple the source of AC power directly to the output terminals if a proper load is detected.01-27-2011
20090066299SEMICONDUCTOR INTEGRATED CIRCUIT AND METHOD OF CONTROLLING MEMS-TYPE VARIABLE CAPACITANCE CAPACITOR - A first pump circuit generates a first voltage for decreasing the distance between primary electrodes. The first voltage is limited to a predetermined limit by a first limiter circuit. A second pump circuit generates a second voltage for keeping the distance between the primary electrodes constant. A third pump circuit generates the second voltage and has a supplying capacity smaller than the first one. The second voltage is limited by second and third limiter circuits. A ripple capacitor is charged up to the second voltage by the second pump circuit and the second limiter circuit within a period of time the first voltage is being generated. When a supplying voltage of the first pump circuit reaches to the first voltage, and a deformation stops, the second voltage is supplied by the third pump circuit and the third limiter circuit instead of the second pump circuit and the second limiter circuit.03-12-2009
20110025279POWER SUPPLY CIRCUIT AND SEMICONDUCTOR DEVICE - A power supply circuit comprises: a first voltage booster circuit that receives a first clock signal having a fixed frequency, and supplies a voltage to a prescribed circuit; and a second voltage booster circuit that receives a second clock signal having a frequency corresponding to an operating frequency of the prescribed circuit, and supplies a voltage to the prescribed circuit.02-03-2011
20110121795PROGRAMMABLE POWER SUPPLY CONTROLLER AND METHODOLOGY FOR AUTOMATIC PHASE ADJUSTMENT OF A PWM OUTPUT SIGNAL - A controller and methodology for a power supply are disclosed. The controller includes output channels for providing a pulse width modulation (PWM) voltage signal for driving a load, for example, a microprocessor. Each channel provides a portion of the PWM signal. The controller receives user input information and uses that information to automatically determine window sizes. A window size defines the maximum output current level for a given window. The controller uses feedback signals to determine the current being drawn by the load, and selects the number of windows and channels that are needed to adequately provide that current. The controller selectively activates and deactivates the output channels accordingly. In response a change in the user input information the controller automatically adjusts the window sizes.05-26-2011
20100141221DELIVERED ENERGY COMPENSATION DURING PLASMA PROCESSING - An apparatus and method for controlling an application of power to power a plasma chamber. A detector detects actual power out from the power stage to the plasma chamber during a sampling interval. A compare module compares the actual power out during the sampling interval to a present power setting during the sampling interval and generates a compensation value. An adjust module updates the present power setting for the power stage with the compensation value to provide a new power setting for the power stage to control the power out from power stage to the plasma chamber during the deposition process whereby power losses occurring during the deposition process are compensated during the deposition process. If there is a fixed time period for the deposition process, the compensation method and apparatus may be used to compensate the deposition process for energy losses without extending the duration of the deposition process.06-10-2010
20090218994Resonance DC/DC Converter and Control Method Thereof - The present invention refers to a method for controlling a resonance DC/DC converter, which adjusts an output voltage by changing a turn-on frequency of input switch devices of a resonance circuit of the converter, and extends the range of the output voltage of the resonance circuit by adjusting the duty ratio of the switch devices based on the feedback signal of the load circuit. The present invention also provides the resonance DC/DC converter structure using the controlling method. The advantage of the present invention lies in the use of two modes of frequency modulation and frequency modulation plus pulse width modulation to control the resonance DC/DC converter; the use of the frequency modulation controlling mode when the operating frequency of the power supply is low, and introducing the frequency modulation plus pulse width modulation controlling mode when the operating frequency of the power supply is too high. As a result, the problem of the resonance converter, that is, the high operating frequency and the big loss of the circuit when the circuit operates at a light load and non-load, can be solved, and thus the regulation ability for the output voltage of the resonance circuit is enormously improved, and the output range of the voltage is effectively expanded.09-03-2009
20100039081SYSTEM FOR SUPPLYING AND RECEIVING POWER, POWER SUPPLY DEVICE AND METHOD THEREOF - A power supply device includes a power input unit used for receiving an external power source, a voltage converting unit used for converting the voltage of the external power source to a predetermined voltage, a communication unit used for obtaining working voltage information of a power receiving device connected to the power supply device, a control unit used for controlling the voltage converting unit to output a working voltage indicated by the working voltage information to the power receiving device. The invention further provides a method for supplying power, and a system for supplying and receiving power.02-18-2010
20100039080Single-inductor buck-boost converter with positive and negative outputs - A single-inductor power converter with buck-boost capability provides regulated bipolar output voltage to a positive and a negative load. A five-switch bridge topology allows a controller to direct the inductor current to the appropriate outputs or circuit ground as needed to maintain regulation. The controller also adjusts the inductor current level for proper output voltage regulation. The five-switch bridge topology makes possible a wide range of ratios between the positive and negative output currents of the converter.02-18-2010
20100039079Regulation of a Current through an Inductive Load - A current regulator and a method for regulating current are described.02-18-2010
20120242301CONTROL APPARATUS - According to one embodiment, a control apparatus communicable with a power measuring apparatus includes a communication unit, a threshold storage, and a controller. The communication unit acquires a usable power value from the power measuring apparatus. The threshold storage stores a threshold value. The controller changes a working state thereof in accordance with a comparison result of the usable power value and the threshold value.09-27-2012
20120242302POWER SUPPLY DEVICE - A power supply device includes a step-down unit to step down an input voltage, a switching unit to perform switching on a stepped-down voltage obtained through the stepping down by the step-down unit so as to externally output the voltage, an output variation detection unit to detect a corresponding variation of output from the switching unit, a delay unit to delay the input voltage by a prescribed time period, a delay variation detection unit to detect a corresponding variation of a delayed voltage output from the delay unit, an addition unit to add corresponding variations of the power supply voltage and the delayed voltage respectively detected by the output variation detection unit and the delay variation detection unit, and a control unit to perform feedback control on the basis of the corresponding variations of the power supply voltage and the delayed voltage added by the addition unit.09-27-2012
20100066318SUPPLY TOPOLOGY WITH POWER LIMITING FEEDBACK LOOP - A supply topology comprising an AC to DC or DC to DC adapter and an electronic device with an active system, a battery, and an adapter controller implements closed-loop control of adapter output voltage to limit power consumption by the electronic device to a value related to maximum adapter power. The adapter couples a signal representing maximum adapter power to a control line connected to the electronic device and the electronic device couples an error signal representing the difference between instantaneous power consumption and adapter maximum power onto the same control line. The adapter adjusts its output voltage in response to the magnitude of the error signal. An adapter controller in the electronic device sets a limit for allocating current to battery charging from the signal representing maximum adapter power, with battery charging current approaching zero as instantaneous power consumption approaches maximum adapter power. The adapter controller adjusts the limit for allocating current to battery charging in response to new values of adapter maximum power associated with alternate adapters connected to the electronic device.03-18-2010
20110248688PROGRAMMABLE LOW-DROPOUT REGULATOR AND METHODS THEREFOR - A low-dropout (LDO) regulator includes a voltage reference circuit to provide a reference voltage, a pass device including an input terminal coupled to a voltage input, an output terminal to provide an output voltage and a control terminal, and an error amplifier including a first amplifier input for receiving the reference voltage, a second amplifier input, an amplifier output coupled to the control terminal of the pass device. Additionally, the LDO regulator includes a feedback circuit including a feedback input coupled to the output terminal of the pass device and a feedback output coupled to the second amplifier input to provide a feedback signal. The LDO regulator further includes a control circuit including a non-volatile memory to store configuration data to control operation of the voltage reference circuit, the pass device, the error amplifier, and the feedback circuit to produce the output voltage.10-13-2011
20110101931Load adaptive DC Power Supply - A load adaptive DC power supply circuit, comprising: a power converter, a current detector and a scan controller. The power converter provides an output voltage. The scan controller controls the power converter to change the output voltage and conduct voltage scanning. The current detector generates an output current signal according to the output current. The scan controller analyzes the output current signal and obtains an optimal output voltage.05-05-2011
20110074368POWER DELIVERY SYSTEM WITH SURGE HANDLING CAPABILITY - A sensing circuit senses a load current to generate a sensed signal. A comparator's output is set to a first value if the sensed signal is equal to or greater than a reference signal, and to a second value if the sensed signal is smaller than the reference signal. A one-shot timer generates a logic signal that transitions from a first state to a second state in response to a first occurrence of the first value of the comparator's output, or optionally in response to each subsequent occurrence of the first value of the comparator's output if the one-shot timer is rearmed. A selector sets a first limit for the current delivered to the load in response to the first state of the logic signal, and a second limit for the current delivered to the load in response to the second state of the logic signal.03-31-2011
20090230930Adaptive Power Supply and Related Circuitry - A power supply configuration includes a monitor circuit to monitor an output voltage and output current of a power supply. The output voltage can be used to supply power to a dynamic load. The power supply varies a rate of changing an adaptive output voltage reference value that tracks the output voltage. Based on a comparison of the output voltage with respect to the adaptive output voltage reference voltage value, a controller associated with the power supply controls switching operation of the power supply to maintain the output voltage within a voltage range. For example, modifying the rate of changing the adaptive output voltage reference value over time depending on current operating conditions of the power supply changes a responsiveness and ability of the power supply to provide current to the dynamic load.09-17-2009
20090200997SWITCHING CONTROLLER HAVING PROGRAMMABLE FEEDBACK CIRCUIT FOR POWER CONVERTERS - A switching controller for a boost power converter includes a switching-control circuit and a programmable feedback circuit. The programmable feedback circuit is coupled to an output of the boost power converter via a voltage divider. The programmable feedback circuit includes a current source coupled to a switch. On a light-load condition, a power-saving signal turns on the switch. The switch will conduct a programming current supplied by the current source toward the voltage divider. Furthermore, the voltage divider is externally adjustable for programming a determined level of an output voltage of the boost power converter on the light-load condition. Additionally the present invention increases system design flexibility to meet practical power-saving requirements without adding circuitries and increasing cost.08-13-2009
20110254519ULTRASONIC GENERATOR AND PROGRAM WRITING METHOD - An ultrasonic generator is provided, in which the control system can easily be changed in accordance with a cleaning application and a cleaning process. The ultrasonic generator according to the present invention, which causes an ultrasonic transducer to oscillate a signal for ultrasonic vibration, includes a programmable multiple control circuit having a signal generation circuit for generating a signal, and an output adjustment circuit for adjusting the output of the signal from the programmable multiple control circuit, wherein the programmable multiple control circuit has a power control circuit electrically connected to the output adjustment circuit, a phase comparison circuit electrically connected to the output adjustment circuit, a frequency control circuit electrically connected to the phase comparison circuit, and a signal modulation circuit electrically connected to the frequency control circuit via the signal generation circuit.10-20-2011
20120200269CALIBRATION APPARATUS AND CALIBRATION METHOD THEREOF - A calibration apparatus includes: a first circuit arranged for generating a reference voltage with respect to a first circuit element according to a reference current flowing to the first circuit element; a second circuit arranged for generating an output voltage according to a tunable current; and an adjusting circuit for adjusting the tunable current to a target current value according to the reference voltage and the output voltage, wherein the adjusting circuit comprises: a search unit for performing a search according to a comparison result of the reference voltage and the output voltage to thereby determine a control setting; and a control unit coupled to the search unit, and for generating a control signal to the second circuit according to the control setting, and after the search unit adjusts the control setting, the search unit stops adjusting the control setting according to the comparison result.08-09-2012
20120200270Ultra Low Power Regulator - A power regulator with minimized power consumption is disclosed. The power regulator includes at least one multiplier module and at least one amplifier module. The multiplier module is configured to multiply the reference voltage to provide a second voltage, while the amplifier module is configured to receive the second voltage and provide a regulated voltage. The magnitude of the second voltage is greater than the magnitude of the reference voltage by a factor greater than one.08-09-2012
20100277139CONSTANT POWER CONTROL APPARATUS AND CONTROL METHOD THEREOF - A constant power control apparatus and a controlling method thereof are provided. The constant power control apparatus outputs output power to a load element. The constant power control apparatus includes a compensation and modification device, a constant power control device, and a power generation circuit. The compensation and modification device receives an expected output power voltage and a voltage feedback signal relating to the output power. The compensation and modification device transforms the expected output power voltage into a current reference value, and modifies the current reference value to generate a modified current reference value according to the voltage feedback signal. The constant power control device receives the modified current reference value and a current feedback signal relating to the output power, and generates a control signal for use in power modulation. The power generation circuit receives the control signal and outputs the output power.11-04-2010
20100277140Power System - A power system is disclosed. The power system comprises a plurality of power supply units, a voltage sharing bus, and a current sharing bus. The sharing bus is used to transmit a sharing voltage, and the current sharing bus is used to transmit a first current reference value. Each of the power supply units comprises: a power converter, a feed-forward control (FFC) circuit, and a feedback control (FBC) circuit. The feed-forward control circuit is used to generate a second current reference value according to a difference between an input voltage of the power converter and the sharing voltage. The feedback control circuit is used to generate a current compensation value according to the second current reference value and the first current reference value. The power converter can adjusts the output current thereof in accordance with the current compensation value.11-04-2010
20110163730CURRENT MODE BANG-BANG REGULATOR AMPLIFIER - An improved CMBB regulator includes a current amplifier circuit that allows both load transient performance and noise immunity to be optimized simultaneously. The current amplifier circuit measures a voltage drop across a sense resistor to determine a power driver output current. The current amplifier circuit separates AC and DC current information and applies separate gain factors to the AC and DC current information. AC and DC current information modified by the gain factors is then recombined and used to pass current through an output resistor. A current amplifier output voltage is input to a comparator circuit that provides an output that indicates whether the current amplifier output voltage is above, equal to, or below a desired voltage level. The comparator output is then used to provide feedback control to a power driver circuit.07-07-2011
20120262134SEMICONDUCTOR DEVICE - A circuit including a first buffer coupled to a power line to output a first output signal based on a data signal to an output terminal, a second buffer coupled to the power line to output a second output signal based on the data signal to the output terminal when a control signal is in a predetermined level, and a control circuit coupled to the power line and the control signal.10-18-2012
20120262133BI-DIRECTIONAL CONVERTER VOLTAGE CONTROLLED CURRENT SOURCE FOR VOLTAGE REGULATION - A bi-directional converter voltage controlled current system and methods are disclosed. A bi-directional converter provides a bi-directional current to an electrical bus according to a variable duty-cycle control signal. Also, a bi-directional current sensing sensor senses the bi-directional current to provide a sensor voltage signal proportional to the converter current. Further, a variable duty-cycle controller controls a duty-cycle of the variable duty-cycle control signal to control a voltage of the electrical bus based on an error signal.10-18-2012
20110260702Voltage Converter and Method for Voltage Conversion - In one embodiment, a voltage converter comprises a step-down converter (DC), to which can be supplied, on the inlet side, an inlet voltage (VBat), to which is supplied, on the inlet side, a control voltage (Vs), and which has an outlet (10-27-2011
20120146594Circuit of high efficient buck-boost switching regulator and control method thereof - Systems and methods for providing a buck-boost converter with an improved efficiency are disclosed. The buck-boost converter disclosed operates in 5 different modes, namely in buck mode, half frequency buck mode, half frequency buck-boost mode, half frequency boost mode, and in boost mode. In half frequency buck mode, buck-boost mode, and in half frequency boost mode the switching frequency is halved compared to the switching frequency of buck or boost mode. A simple circuit implementation by adding two offset voltages in ramp signals or PWM comparators enables to halve the switching frequency if required.06-14-2012
20110080145Current source, electronic apparatus, and integrated circuit - Disclosed herein is a current source, including: a current control oscillator configured to output an oscillation signal of a frequency dependent on an input current; a comparator configured to compare the oscillation signal with a reference signal; a charge pump configured to output a current dependent on a comparison result by the comparator; a low-pass filter configured to include a smoothing capacitor charged and discharged by an output current of the charge pump; a loop converter configured to be connected to the smoothing capacitor and generate a current dependent on a voltage generated by the smoothing capacitor to supply the current as the input current to the current control oscillator; and an output converter configured to be connected to the low-pass filter and generate a current dependent on a voltage generated in the low-pass filter to output the current as an output current.04-07-2011
20100060247Bus connection for connecting a field device to a field bus - A bus connection for connecting a field device to a field bus whereby the bus connection has a circuit for sending and receiving databus signals and for generating at least one regulated operating voltage, and the regulated operating voltage is generated from a bus voltage supplying the field bus, characterized in that a controllable resistor is provided for generating an additional operating voltage; circuitry means are provided, controlling the controllable resistor as a function of the bus voltage such that the input voltage of the circuit is regulated at its minimum required power supply voltage; and the sum of the regulated operating voltage and the additional operating voltage is supplied to the field device as the power supply voltage.03-11-2010
20080218133SIGNAL GENERATING APPARATUS AND METHOD THEREOF - The present invention discloses a signal generating apparatus for generating a clock signal, the signal generating apparatus includes: an adjusting module for generating an adjusting current according to a first reference voltage and a control voltage; and a clock signal generating module coupled to the adjusting module. The clock signal generating module includes: a current generating unit for generating a first current; a signal generating unit coupled to the current generating unit and the adjusting module for generating a voltage signal according to a second current, wherein the second current is generated according to the first current and the adjusting current; and a comparing unit coupled to the signal generating unit and a second reference voltage for comparing the voltage signal and the second reference voltage to generate the clock signal.09-11-2008
20110187332Switching Circuit Having Delay For Inrush Current Protection - A two-wire switching circuit can handle a large inrush current, but does not require a neutral connection or a heavy-duty mechanical switch or relay. The switching circuit comprises a mechanical air-gap switch and a controllably conductive device, which are coupled in series and are adapted to be coupled between an AC power source and an electrical load when the mechanical switch is in a first position. A first delay circuit is coupled in parallel with the controllably conductive device and in series with the mechanical air-gap switch. A latching circuit, which is responsive to the first delay circuit, is coupled to the controllably conductive device for controlling the controllably conductive device. The first delay circuit causes the latching circuit to control the controllably conductive device to be conductive after a first predetermined time after the mechanical air-gap switch changes to the first position.08-04-2011
20110187333ENERGY-SAVING POWER CONVERTING APPARATUS CAPABLE OF BEING WAKED UP AUTOMATICALLY AND HAVING SUSPEND MODE - The present invention relates to an energy-saving power converting apparatus. The apparatus includes a power converter for providing electric power to an electricity consuming device and a state indicator adapted for being connected to a standard interface of the electricity consuming device. The state indicator is configured to be activated upon receiving power from the power terminal of the standard interface of the electricity consuming device when the electricity consuming device is in the working mode, while the state indicator cannot receive power from the power terminal when the electricity consuming device is in the non-working mode. The power converting apparatus further includes a receiving and controlling unit for placing a control switch in an electrically connected state to activate the voltage-transforming unit when the electricity consuming device is in the working mode.08-04-2011
20100019742Unified Control of Single and Three-Phase Power Converters - Provided herein is are unified control methods and implementations for controlling single and three-phase power converters. In an exemplary embodiment, a unified controller is provided that can be used to control a three-phase three-wire Voltage Source Inverter (VSI), a three-phase four-wire VSI, a three-phase grid-connected power converter for current shaping, and a single-phase full bridge VSI.01-28-2010
20100001699OUTPUT VOLTAGE CONTROL CIRCUIT FOR MODULAR POWER SUPPLIES - A method for adjusting an output voltage of a module includes providing a digital reference voltage, converting the digital reference voltage to an analog reference voltage, comparing the output voltage and the analog reference voltage, controlling the module based upon a result of the step of comparing the output voltage and the analog reference voltage such that the output voltage corresponds to the analog reference voltage, and adjusting the digital reference voltage. An increase in the digital reference voltage causes a corresponding increase in the output voltage, and a decrease in the digital reference voltage causes a corresponding decrease in the output voltage.01-07-2010
20090184695METHOD AND SYSTEM FOR RMS COMPUTATION ON DIGITIZED SAMPLES - A system and method for computing a Root Mean Square (RMS) value of digitized samples is disclosed. Discrete digital representations of a continuous analog electrical signal are produced. The discrete digital representations are received by a digital computation module, wherein the digital computation module is configured to perform a division operation and a square root operation for the RMS computation in one combined algorithm.07-23-2009
20120306460Resistance Simulation and Common Mode Rejection for Digital Source-Measure Units - A source-measure unit (SMU) may be implemented with digital control loops. The output voltage and output current may be measured with dedicated ADCs (analog-to-digital converters), and the readings obtained by the ADCs may be compared to a setpoint in a digital loop controller, which may produce an output to drive a DAC (digital-to-analog converter) to maintain the output voltage and/or output current at a desired setpoint. The digital loop controller may also digitally implement simulated resistance with high resolution, accuracy, and range, using Thévenin and Norton power supply models. Simulated resistor values may range from 10Ω to 10Ω for output currents in the 100 mA range, with a sub-200μΩ resolution. The range may be expanded up to 100 kΩ for output currents in the 10 μA range. The Norton and Thévenin implementations may be combined, and a “pure resistance” mode may be created for simulating any desired resistance value. A variation of the general resistance-simulation technique may also be used to compensate for Common Mode Voltage effects in the current measurement path, providing tighter output and measurement specifications at a lower component cost.12-06-2012
20120306461POWER SUPPLY DEVICE, CONTROL INTEGRATED CIRCUIT THEREOF, AND METHOD OF CONTROLLING POWER SUPPLY DEVICE - There is provided a power supply device including: a first controller operating a pulse width modulation (PWM) control integrated circuit (IC) when a load is connected to an output terminal thereof; a second controller determining whether to operate the PWM control IC according to a change in voltage of an auxiliary capacitor connected to the first controller when a load is not connected to the output terminal; and a constant voltage circuit unit supplying a constant voltage to the first controller and the second controller when the PWM control IC operates. Power consumption can be considerably reduced when a load is not connected to the output terminal of the power supply device. Also, since elements for controlling the power supply device are implemented as a single integrated circuit (IC), a leakage current can be reduced to thus minimize power consumption. In addition, voltage can be supplied to the IC while reducing switching noise.12-06-2012
20090079401SWITCH MODE POWER SUPPLY (SMPS) AND METHODS THEREOF - Embodiments of the present invention are directed to switched-mode power supply (SMPS) circuits and methods thereof. The SMPS circuit receives information related to a future load change. For example, the information may be received at a decoder (e.g., a serial bus interface (SBI) decoder) from a microprocessor or microcontroller, such as a mobile station modem (MSM). The SMPS circuit may include an analog-to-digital converter configured to sample an output volgatle of the SMPS circuit to determine a time when the future load change occurs. The SMPS circuit may further include a transient recovery circuit (TRC) for stabilizing the output voltage based on the received information when the future load change occurs. For example, the TRC calculates a duty cycle used to transition states of switches of the SMPS circuit to compensate for the future load change.03-26-2009
20110057632Circuit and method for constant on-time control for an interleaved multiphase voltage regulator - A circuit and method are proposed for constant on-time control for an interleaved multiphase voltage regulator, which monitor the channel currents of all the channels of the interleaved multiphase voltage regulator to select one from the channels to drive and so achieve interleaved phase operation.03-10-2011
20120098504High Efficiency Variable Voltage Supply - There is disclosed a power supply stage, comprising: generating means for generating a power supply voltage from a high efficiency variable voltage supply in dependence on a reference signal; adjusting means for receiving the generated power supply voltage, and adapted to provide an adjusted selected power supply voltage tracking the reference signal in dependence thereon.04-26-2012
20120038330METHOD AND AN APPARATUS FOR CONTROLLING THE OUTPUT VOLTAGE OF A BOOST CONVERTER COMPOSED OF PLURAL BRIDGE DEVICES - The present invention concerns an apparatus for controlling the output voltage of a boost converter composed of a number n of bridge devices (B, B02-16-2012
20120038329System and Method for Controlling the Output Voltage of a Power Supply - A system and method for controlling the output voltage of a power supply that includes a control section and an interconnect section having an output point. A voltage regulator provides a control section voltage, and a current measurement device measures a control section current and generates a current signal. A controller receives the current signal and a voltage command signal representing a desired output voltage at the output point of the interconnect section. The controller generates an adjusted voltage command signal based on the voltage command signal representing the desired output voltage, the current signal, a control section internal resistance and an interconnect section external resistance. The voltage regulator receives the adjusted voltage command signal and provides a control section voltage based thereon in order to supply an output voltage at the output point that is substantially equal to the desired output voltage.02-16-2012
20110068754ELECTRONIC DEVICE AND METHOD FOR DC-DC CONVERSION - An electronic device for DC-DC conversion of an input voltage into an output voltage is provided. The electronic device includes a current mode control loop for controlling a sensed current of the DC-DC conversion by comparing a voltage level indicating a magnitude of the sensed current with a reference voltage level indicating the maximum admissible magnitude of the sensed current. The reference voltage level is dynamically adjusted in response to a change of an input voltage level.03-24-2011
20110068755METHOD FOR OPTIMIZING THE EFFICIENCY OF AN ENERGY SYSTEM - The invention relates to a method for optimizing the efficiency of an energy system, which system has at least one energy unit that is coupled to a control unit and a DC/DC converter for regulating the power output of the energy unit, and the control unit regulates the power output to an electrical component via the DC/DC converter as a function of an operating state of the energy system. According to the invention, it is provided that the energy unit communicates with an observer via a first information channel, and information from the energy unit is transmitted during the operation of the energy system via the first information channel to the observer, which from the transmitted information ascertains the efficiency performance of the energy unit and transmits the efficiency performance to the control unit via a second information channel, as a result of which the overall efficiency of the energy system is improved.03-24-2011
20110316495CIRCUIT FOR A SWITCH MODE POWER SUPPLY - A circuit for a switch mode power supply is presented. The circuit comprises a transient detection portion adapted to delay an analogue error signal (Vdiff) derived from the output voltage (Vout) of the switch mode power supply and to detect whether the difference between the output voltage and the delayed analogue error signal (Vdel) is within a predetermined range.12-29-2011
20120043948SYSTEM, METHOD AND APPARATUS TO AUTOMATICALLY DETECT A TYPE OF A VARIABLE OUTPUT DC POWER SOURCE - A method includes coupling a variable output DC power source to power control circuitry, and detecting a type of the variable output DC power source in response to the coupling operation. In one embodiment, the detecting operation may include sending an interrogation signal from the power control circuitry to the variable output DC power source, and evaluating a response to the interrogation signal to determine the type of said variable output DC power source. Power control circuitry may include source type recognition circuitry configured to detect a type of a variable output DC power source in response to a coupling of the variable output DC power source to the power control circuitry.02-23-2012
20120043947Single Inductor Multiple Output Converter - There is disclosed a buck-boost converter comprising a voltage generation apparatus comprising: a voltage source (02-23-2012
20120043946SYSTEM AND METHOD FOR REGULATING A POWER SUPPLY - One embodiment of the invention includes regulation voltage system for a power supply system. The system includes a current sense system configured to generate a sense signal that represents an output current of the power supply system that is supplied to a load. The system also includes a positive voltage droop controller configured to provide a regulation voltage to the power supply system, the positive voltage droop controller setting the regulation voltage to one of a predetermined fixed reference voltage or a variable reference voltage based on the sense signal. The variable reference voltage can be less than the predetermined fixed reference voltage.02-23-2012
20110156666TRANSFORMING DEVICE, ELECTRONIC APPARATUS, AND POWER SUPPLY SYSTEM INCLUDING THE SAME - When an electronic apparatus comes to a state of being capable of receiving electric power, an output voltage of an AC adaptor changes from a second voltage Vb to a first voltage Va and the change in voltage can be detected by an electronic apparatus. Due to this configuration, a structure that can detect the type of AC adaptor can be provided without adding any new contacts to a DC input terminal and to a DC output terminal.06-30-2011
20110156665LINEAR MODULATION VOLTAGE TRANSFORMER CIRCUITRY - A linear modulation voltage transformer circuitry includes a power stage unit, a voltage division unit, a linear modulation unit, an error amplifier, and a recursive controller. The power stage unit adapts an input voltage and outputs a first voltage to the voltage division unit, which outputs a divided voltage. The linear modulation unit receives the divided voltage, compares it with a control voltage, and outputs an error voltage signal to the error amplifier, which amplifies the error voltage signal as an error gain control signal. The recursive controller receives and modulates the error gain control signal and outputs the modulation error gain control signal to the power stage unit as a reference signal so as for the power stage unit to modulate the first voltage. Thus, the first voltage can be varied in real time via the linear modulation unit to meet load demands.06-30-2011
20120001601POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD - Disclosed is a power supply system capable of achieving low power consumption while reducing CPU control even if the power supply system includes a plurality of regulators. A DCDC (01-05-2012
20100052628Circuit and Method for Reducing Output Voltage Transients in a Voltage Mode Buck Converter - A voltage control mode buck converter circuit includes a feedback amplifier providing a comparison signal and a storage circuit in communication with the comparison signal to store a storage comparison signal value. The storage circuit stores the operating conditions for the circuit during normal continuous conduction mode operation in response to sensing a load drop for the circuit. A switching circuit locks the feedback amplifier into the stored operating parameters while the converter circuit operates in non-continuous conduction mode. When the circuit transitions back into the continuous conduction operation mode, the feedback amplifier is already operating at conditions that are compatible with a continuous conduction operation mode.03-04-2010
20120013312Power Control Device and Method thereof - A power control device for tracking a maximum power point (MPP) of a power generator comprises a sensing unit for generating a sensed voltage value and a sensed power value according to a cross voltage and an output current of the power generator; a sample and hold unit for sampling and holding the sensed voltage value and the sensed power value; a comparison and determination unit for generating a determination result according to the sensed voltage value and the sensed power value of a previous time point outputted by the sample and hold unit and the sensed voltage value and the sensed power value of a current time point outputted by the sensing unit; and a voltage converter for adjusting the cross voltage of the power generator to make the power generator reach to the maximum power point according to the determination result.01-19-2012
20120013311INTERFACE CONTROL - An apparatus, method and computer program, the apparatus comprising: communication circuitry configured to drive, on a first occasion, a first transition of a first electrical parameter on an electrical interface to another apparatus; determination circuitry configured to determine feedback information dependent upon a measured electrical parameter on the electrical interface; and control circuitry configured to use the determined feedback information to control the power output of the communication circuitry to achieve, on a second occasion subsequent to the first occasion, the first transition of the first electrical parameter on the electrical interface within a threshold time period.01-19-2012
20120153906METHOD FOR SCALING A DRIVE SIGNAL AND CIRCUIT THEREFOR - In accordance with an embodiment, a converter includes a circuit and method for scaling a drive signal. The converter determines the power at its input and scales a drive signal in accordance with the input power. In accordance with another embodiment the converter determines the power at its output and scales the drive signal in accordance with the output power.06-21-2012
20090134851ELECTRIC POWER STORAGE SYSTEM USING CAPACITORS AND CONTROL METHOD THEREOF - In an electric power storage system according to the present invention, in the case of charging, a plurality of capacitors of each circuit block of the electric power storage system are switched to a serial connection to initiate the charging. When the output voltage of power storage means reaches the maximum input voltage of DC-AC conversion means, each capacitor of a number j of circuit blocks is switched to a parallel connection in order of higher block voltage. Also up to the time when the maximum input voltage is reached again, each capacitor of a number j of circuit blocks is switched to a parallel connection in order of higher block voltage. In the case of discharging, pluralities of capacitors of each circuit block of the electric power storage system are switched to a parallel connection to initiate the discharging. When the output voltage of power storage means reaches the minimum input voltage of DC-AC conversion means, each capacitor of a number k of circuit blocks is switched to a serial connection in order of higher block voltage. Also up to the time when the minimum input voltage is reached gain, each capacitor of a number k of circuit blocks is switched to a serial connection in order of higher block voltage. Accordingly, the electric power storage system is hardly affected by the capacitance error of the capacitors, and charging/discharging efficiency can be improved.05-28-2009
20090134853POWER SUPPLY APPARATUS - A power supply apparatus that supplies voltage of a battery to a load is disclosed. The power supply apparatus includes a booster circuit connected to the battery and a power storage section, which temporarily stores the power output by the booster circuit. The power storage section is connected in parallel with the load.05-28-2009
20090134852System and method using a current mirror to program an output voltage and current - A programmable AC/DC or DC/DC power supply adapted to compensate for voltage drop in a cable extending to a portable electronic device. The invention reduces the number and size of cable wires and tip components needed to remotely control an output voltage level and an output current limit. The voltage and current programming components are outside the compensation feedback loop.05-28-2009
20110089914Apparatus and method for isolating an adaptive voltage scaling (AVS) loop in a powered system - A method includes generating a regulated voltage for a powered component and modifying the regulated voltage with an adaptive voltage scaling (AVS) control loop. The method also includes further modifying the regulated voltage using at least one additional control loop. The AVS control loop is isolated from the at least one additional control loop. Modifying the regulated voltage with the AVS control loop could include storing an AVS digital value and converting the AVS digital value into an analog signal. Modifying the regulated voltage with the AVS control loop could also include modifying a control signal for a voltage regulator using the analog signal, where the voltage regulator generates the regulated voltage. Modifying the regulated voltage with the AVS control loop could further include buffering the analog signal and outputting the buffered analog signal as an isolated AVS signal over the AVS control loop.04-21-2011
20120119714Method and apparatus for load identification - A load communication device and method is provided, that identifies and transmits to a PSU the load requirement to operate a load device that is powered by the PSU, by analyzing the characteristics of current applied to the load device by a given input voltage generated by the PSU. The load communication device is configured to transmit between the PSU and the load device solely over the 2 wire cable that extends between the PSU and the load device.05-17-2012
20120249096Voltage converter and method for converting voltage - A voltage converter comprises a step-down converter circuit (DCDC) with an inductive accumulator (LSW) and a first capacitive accumulator (CDC) and a charge pump circuit (CP) with at least one second capacitive accumulator (CFLY, CFLY10-04-2012
20120249095APPARATUS AND METHODS OF SOFT-START IN A HYSTERETIC POWER CONVERTER - In one general aspect, a power supply circuit can include a power stage configured to be coupled to a power source and configured to deliver an output voltage to a load circuit, and can include a comparator coupled to the power stage and configured to receive a reference voltage. The power supply circuit can also include a hysteresis control circuit configured to receive at least one of a feedback voltage or a reference voltage and configured to change a hysteresis of the comparator in response to the at least one of the feedback voltage or the reference voltage during a soft-start of the power supply circuit.10-04-2012
20120249093POWER SUPPLY CONTROLLER - Exemplary embodiments are directed to a power controller. A method may include comparing a summation voltage comprising a sum of an amplified error voltage and a reference voltage with an estimated voltage to generate a comparator output signal. The method may also include generating a gate drive signal from the comparator output signal and filtering a signal coupled to a power stage to generate the estimated voltage.10-04-2012
20100289462CALIBRATION APPARATUS AND CALIBRATION METHOD THEREOF - A calibration apparatus includes: a first circuit arranged for generating a reference voltage with respect to a first circuit element according to a reference current flowing to the first circuit element, a second circuit arranged for generating an output voltage according to a tunable current, and an adjusting circuit coupled to the first circuit and the second circuit for adjusting the tunable current to a target current value according to the reference voltage and the output voltage.11-18-2010
20100244788Power regulation for large transient loads - Methods and circuits for power supply arrangement and control are disclosed herein. In one embodiment, a power supply can include: (i) an input capacitor coupled to an input terminal that is coupled to a power source, where the power source provides power that is constrained by a predetermined limit; (ii) an output capacitor coupled to an output terminal that is coupled to a load, where the load has a first load condition or a second load condition; (iii) a first regulator to convert an input voltage at the input terminal to an output voltage at the output terminal to power the load; (iv) a second regulator coupled to the first regulator; and (v) an energy storage element coupled to the second regulator, where the second regulator delivers energy from the energy storage element to the first regulator to maintain regulation of an output voltage at the output terminal when in the second load condition.09-30-2010
20110181254DIRECT CURRENT (DC) CORRECTION CIRCUIT FOR A TIME OF FLIGHT (TOF) PHOTODIODE FRONT END - A system and method that compensates for the effects of ambient light in a time of flight (TOF) sensor front end is provided. Moreover, a direct current (DC) correction loop is utilized at the front end, which removes a DC component from a current generated by the TOF sensor and accordingly prevents saturating the front end. The DC correction loop attenuates the DC component without adding significant thermal noise at a modulation frequency and provides a corrected signal to the front end circuitry. The corrected signal is processed and utilized to detect a position of an object within the optical field of the sensor.07-28-2011
20110181253SYSTEM AND METHOD FOR HIGH PRECISION CURRENT SENSING - An apparatus for sensing an input current through an inductor includes an RC circuit connected in parallel with the inductor across first and second input pins of an integrated circuit. A voltage monitoring circuit monitors a first voltage at the first input pin of the integrated circuit and monitors a second voltage at the second input pin of the integrated circuit. An op-amp compares the first voltage with the second voltage and generates a control output responsive to the comparison. A current sink circuit responsive to the indication controls the first voltage to substantially equal the second voltage.07-28-2011
20120212193POWER SUPPLY CIRCUITRY AND ADAPTIVE TRANSIENT CONTROL - A control circuitry can be configured to receive an error signal indicating a difference between an output voltage of the power supply and a desired setpoint for the output voltage. According to one configuration, depending on the error signal, the control circuitry initiates switching between operating the control circuitry in a pulse width modulation mode and operating the control circuitry in a pulse frequency modulation mode to produce an output voltage. Operation of the control circuitry in the pulse frequency modulation mode during a transient condition, such as when a dynamic load instantaneously requires a different amount of current, enables the power supply to satisfy current consumption by the dynamic load. Subsequent to the transient condition, the control circuitry switches back to operation in the pulse width modulation mode.08-23-2012
20090058376 EQUIPMENT CONTROL ARRANGEMENT SUITABLE FOR PROVIDING INFORMATION ABOUT AN OPERATING STATE OF THE EQUIPMENT - A control circuit is provided for controlling a vehicle component (e.g., an HVAC system). The control circuit includes a communication link that connects the equipment control module to the control assembly and communicates instructions from the control assembly to the equipment control module and performance characteristics from the vehicle component to the control assembly.03-05-2009
20090058377Constant voltage to constant current transferring controller - A constant voltage to constant current transferring controller includes a voltage signal transferring circuit, a current signal transferring circuit, and an error amplifier. The voltage signal transferring circuit receives a voltage detecting signal and a first reference voltage signal, and outputs a voltage signal transferring reference signal. The current signal transferring circuit receives a current detecting signal and a second reference voltage signal, and outputs a current signal transferring reference signal. The error amplifier receives the voltage signal transferring reference signal, the current signal transferring reference signal and a third reference voltage signal, and outputs an error amplifying signal. When the level of the voltage signal transferring reference signal is larger than the level of the current signal transferring reference signal, the error amplifier outputs the error amplifying signal according to the voltage signal transferring reference signal and the third reference voltage signal.03-05-2009
20120169302METHOLOGY OF ON-CHIP SOFT-START CIRCUITS FOR SWITCHING MODE DC/DC CONVERTER - Methods of a switching mode DC/DC converter are provided in the present invention. The proposed method includes a step of causing a switching frequency of the converter to be operated at a rated value multiplied by a second predetermined value when an output voltage of the converter is not larger than a first predetermined value.07-05-2012
20120176103Voltage Conversion and/or Electrical Measurements from 400 Volts Upwards - A voltage-converter and a signal processing circuit are disclosed. A voltmeter, a power meter and a three-phase meter each including the voltage-converter and the signal processing circuit are disclosed. Methods of making the voltage-converters, voltmeters, three phase meters and power meters, as well as operating and/or using these apparatus are disclosed. Apparatus including feedback paths with at least one voltage-converters, voltmeters, three-phase meters and/or power meters are disclosed.07-12-2012
20120176102POWER CONTROL METHOD AND APPARATUS FOR TRACKING MAXIMUM POWER POINT IN A PHOTOVOLTAIC SYSTEM - A power control method for tracking a Maximum Power Point (MPP) in a photovoltaic system including a solar cell and a boost converter. The power control method includes finding the MPP by applying a continuous ON/OFF signal to the boost converter as a first control signal for controlling a duty ratio of the boost converter, and maintaining an operating point of the photovoltaic system at the MPP by applying a second control signal for controlling the duty ratio to the boost converter depending on a constant-voltage command. In tracking an MPP in a photovoltaic system, an MPPT algorithm may remain at the MPP, without self oscillation, improving fast dynamic characteristics upon a change in solar radiation.07-12-2012
20120074915CONTROL CIRCUIT AND TRACKING METHOD OF MAXIMUM POWER - A control circuit controls a power output module and drives a load device. The control circuit includes a conversion unit, a feed-forward unit, a feedback unit and a control unit. The conversion unit generates a driving signal according to an output signal of the power output module for driving the load device. The feed-forward unit generates a duty cycle reference signal according to the output signal. The feedback unit generates a feedback signal according to the driving signal. The control unit outputs a control signal to control the conversion unit according to the duty cycle reference signal and feedback signal, thereby limiting the output power of the power output module within the maximum power region. A tracking method of the maximum power is also disclosed.03-29-2012
20100270985DC-DC CONVERTER - A DC-DC converter includes a voltage input module receiving an input voltage from an exterior power supply, a voltage transforming module connected with the voltage input module for transforming the input voltage into a proper output voltage, a voltage output module connected with the voltage transforming module for supplying the proper output voltage to an exterior electric appliance, a first detecting module connected with the voltage output module for detecting an output current of the voltage output module and sending a corresponding current signal, a second detecting module connected with the voltage output module for detecting the output voltage of the voltage output module and sending a corresponding voltage signal, and a control module for receiving and analyzing the corresponding current and voltage signals and then generating a corresponding control signal so as to control the output voltage of the voltage transforming module for protecting the electric appliance.10-28-2010
20120313593Arrangement for generating a control signal for controlling a power output of a power generation system - An arrangement for generating a control signal for controlling a power output of a power generation system, such as a wind turbine, is provided. The power output is supplied to a utility grid. The arrangement includes a first input terminal for receiving a first input signal indicative of an actual grid frequency of the utility grid, a control circuit for generating the control signal, and an output terminal to which the control signal is supplied. The control circuit includes a bang-bang controller for generating a first power signal being indicative of a predefined amount of power to be added to the power output of the power generation system. The bang-bang controller is adapted to be activated when the first input signal falls below a first predefined threshold. The control signal depends on the first power signal.12-13-2012
20120256602METHOD AND AN APPARATUS FOR CONTROLLING THE SWITCHES OF A BOOST CONVERTER COMPOSED OF PLURAL BRIDGE DEVICES - A method for controlling the switches of a boost converter composed of plural bridge devices connected in series, each bridge device being composed of a capacitor and plural switches. The method includes: controlling the switches of each bridge device of at least a part of the plural bridge devices according to a given periodical pattern during a first time period, and controlling, during a second time period following the first time period, the switches of each bridge device of the at least part of the plural bridge devices according to a periodical pattern previously used for controlling the switches of another bridge device of the at least part of the plural bridge devices during the first time period.10-11-2012
20110115447MULTIPHASE POWER SUPPLY DEVICE AND CURRENT ADJUSTING METHOD THEREOF - A multiphase power supply device and a current adjusting method thereof are provided in the application. The multiphase power supply device outputs power sources and currents with different phases to a microprocessor, and a detection module detects present temperature values of each phase power source to adjust currents of each phase power source to achieve thermal balance. The multiphase power supply device further can automatically measure the power efficiency and display results including the detected temperature values of each phase power source and the power efficiency on a screen, and thus the user can know the operation efficiency of the power supply device conveniently.05-19-2011
20120229104METHODS AND APPARATUS FOR VOLTAGE REGULATION WITH DYNAMIC TRANSIENT OPTIMIZATION - Methods and apparatus of dynamic transient optimization in a voltage regulator according to various aspects of the present invention may comprise a transition detector configured to compare an output voltage error to an amplitude threshold. The voltage regulator may further comprise a frequency detector configured to measure the frequency of the amplitude threshold being exceeded and to compare the frequency to a frequency threshold and a response circuit configured to activate a response according to a comparison between the frequency threshold and the frequency of the amplitude threshold being exceeded.09-13-2012
20120229103SIGNAL COMPENSATION METHOD FOR MAGNETICALLY SENSITIVE POSITION FEEDBACK DEVICE - Signal compensation method for magnetically sensitive position feedback device in which the compensation for voltage offset is performed in accordance with the following formula (1), while the compensation for voltage amplitude is performed in accordance with the following formula (2):09-13-2012
20080297124Transmission method, apparatus and module - The invention is related to an apparatus configured to: monitor a power supply voltage and a transmission power need and adjust transmission power according to the power supply voltage and the transmission power need for prolonging operation time of an electronic device when the power supply voltage is at least the same as a predetermined limiting value set for a power supply voltage of the electronic device.12-04-2008
20120235651POWER SUPPLIES AND RELATED METHODS CAPABLE OF REDUCING OUTPUT VOLTAGE RIPPLE - Power supplies and related methods capable of reducing output voltage ripple. A power supply provides an output voltage to a load and controls the output voltage to approach a target voltage. The output voltage is compared with the target voltage to generate a control signal, which controls an output current of the power supply. When the control signal causes an increase in the output current, the target voltage is reduced.09-20-2012
20110037445POWER CONTROL CIRCUIT FOR WIRE COMPENSATION AND COMPENSATION METHOD OF THE SAME - A power control circuit with wire compensation is provided. The power control circuit is applied in a power converter, which has an output coupled to a load through a power wire. The power control circuit has an adaptive sensing circuit and a controller. The adaptive sensing circuit is utilized for detecting an output voltage of the power converter and a current on the power wire and generating a feedback signal according to the output voltage and the current on the power wire. The controller is utilized for adjusting a level of the output voltage according to the feedback signal.02-17-2011
20120268085POWER CONVERTING CIRCUIT AND FEEDBACK CONTROL CIRCUIT - A power converting circuit and a feedback control circuit for the power converting circuit are disclosed. The feedback control circuit comprises a feedback controller and a level controlling unit. The feedback controller generates a feedback control signal according to a reference voltage signal and a feedback signal. The level controlling unit receives one of the reference voltage signal and the feedback signal and modules a level of the received signal from a first level to a second level with time according to a level adjusting signal.10-25-2012
20090206804Quasi-Parallel Voltage Regulator - Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected in series wherein regulated and unregulated branches each provide a substantially fixed and constant proportion of the output current. The series connection of input power sources may provide a further feedback mechanism in addition to feedback for regulation which enhances overall performance. As a perfecting feature of the invention, inductor-less resonant converters which are switched in an interleaved fashion may be used in the unregulated branch while substantially cancelling the characteristic large output voltage ripple thereof.08-20-2009
20120268086POWER SUPPLY DEVICE - A power supply device includes a power supply unit and a feedback control unit. The power supply unit is configured for generating an electric potential to be provided to a load. The feedback control unit detects the electric potential and adjusts relevant parameters of the electrical potential to achieve predetermined values. The feedback control unit includes a first feedback circuit and a second feedback circuit electrically connected in series.10-25-2012
20120280666METHOD AND APPARATUS FOR A CONTROL CIRCUIT RESPONSIVE TO AN IMPEDANCE COUPLED TO A CONTROL CIRCUIT TERMINAL - A method, in a power supply controller, of responding to an increase in current through a terminal of the power supply controller, is disclosed. The method includes regulating the terminal to a first voltage level and sensing a magnitude of a first current through the terminal while the controller is regulating the terminal to the first voltage level. The method also includes providing an initial response by the power supply controller in response to the magnitude of the first current exceeding a first threshold current level and then regulating the terminal to a second voltage level after the magnitude of the first current exceeds the first threshold current level. The magnitude of a second current through the terminal is sensed while the controller is regulating the terminal to the second voltage level and the controller determines a final response based on the magnitude of the second current.11-08-2012
20120286746DYNAMIC CONTROL OF THE POWER SOURCING CAPABILITY OF A POWER SOURCE - A method, apparatus, and device provide for the control of the power sourcing capability of a power source that supplies power to a device. A detection element of the device is operable to dynamically detect a power sourcing capability of the power source. A control element of the device is operable to monitor the detected power sourcing capability of the power source and to control the power source to effect a change in the power sourcing capability of the power source in response to a determination that the detected power sourcing capability of the power source is in violation of a threshold value.11-15-2012
20100194358Standby Power Consumption Limiting Device - A standby power consumption limiting device is provided for connection between an electricity supply and an electrical appliance of the kind having a main on/off switch, two power supply input terminals and a standby mode control circuit operable, when the appliance is switched “on”, to place the appliance in a reduced power standby mode. The device comprises standby mode detection means (08-05-2010
20120139509System, apparatus and methods for controlling multiple output converters - An apparatus and method is presented for implementing and controlling a voltage converter with one input voltage and multiple output voltages. In the case of boost and buck-boost converters, a converter circuit with one inductor and a switched group of parallel connection capacitors is realized, one parallel connection for each output voltage. A duty ratio is monitored for the inductor and the switched group of capacitors to provide a set of duty ratios. The duty ratios form a control vector which describes the control inputs. The output voltages are the control outputs describing a MIMO system. A generalized Cuk-Middlebrook modeling approach is applied to the voltage converter, along with linearization and MIMO control methods to regulate all output voltages to desired levels.06-07-2012
20120139508SEMICONDUCTOR APPARATUS - A device includes a first internal voltage generation circuit generating a first internal voltage in response to an external power supply voltage, a second internal voltage generation circuit generating a second internal voltage in response to the external power supply voltage, the second internal voltage being different in voltage level from the first internal voltage, and a preset signal generation circuit responding to a power-on of the external power supply voltage to the device and generating, independently of the first internal voltage, first and second preset signals that bring the first and the second internal voltage generation circuits into respective initial states, the preset signal generating circuit stopping generation of the first preset signal when the external power supply voltage reaches a first voltage level and stopping generation of the second preset signal when the external power supply voltage reaches a second voltage level different from the first voltage level.06-07-2012
20120242303VOLTAGE SETTING DEVICE, PHOTOVOLTAIC POWER GENERATION SYSTEM, AND CONTROL METHOD OF VOLTAGE SETTING DEVICE - An output converter includes a DCDC conversion section, a secondary side voltage/current monitoring section detecting a power from the DCDC conversion section, a maximum operation point control section determining what voltage is to be set by the DCDC conversion section so that the power detected by the secondary side voltage/current monitoring section is maximum, a DCDC short-circuit switch via which a current from a module bypasses the DCDC conversion section to outside, a primary side voltage/current monitoring section measuring the current from the module, a module short-circuit switch switching between a state where a secondary side cathode and a secondary side anode are short-circuited and a state where they are not short-circuited, the maximum operation point control section causing the DCDC short-circuit switch and the module short-circuit switch to switch.09-27-2012
20120242300DC-DC CONVERTER CONTROL APPARATUS AND DC-DC CONVERTER - A DC-DC converter control apparatus controls a DC-DC converter which has an inductor connected between an input terminal for a direct-current input voltage and an output terminal for a direct-current output voltage obtained by converting the direct-current input voltage, a capacitor connected to the inductor, and a switch configured to switch whether the direct-current input voltage is applied to the inductor. The DC-DC converter control apparatus has a subtractor configured to generate a differential voltage between the direct-current input voltage and a reference voltage, a comparator configured to generate a determining signal that indicates determination of a polarity of the differential voltage, and a delay part configured to delay the determining signal for a specific delay time.09-27-2012
20080246449FEED CONTROLLER - A feed controller adopted to be included in a battery drive type device, the feed controller adopted to supply power to a predetermined load from a battery holder that obtains rated electromotive force from plural rated number of batteries having predetermined specification and connected in series while held by the battery holder, the feed controller includes: an outer casing attached to the battery holder in place of one of the plural batteries and having shape and size appropriate for being held by the battery holder; a converter unit disposed within the outer casing to receive voltage corresponding to the sum of the electromotive forces from the other batteries when the outer casing is held by the battery holder in place of the one battery and convert the supplied voltage to output voltage corresponding to the rated electromotive force; a switch unit inserted into a feed path for supplying the output from the converter unit to the predetermined load to open and close the feed path according to a feed control signal; and a feed control unit which generates the feed control signal to be supplied to the switch unit.10-09-2008
20080246447METHOD AND APPARATUS FOR INTEGRATED CABLE DROP COMPENSATION OF A POWER CONVERTER - An integrated circuit controller for a power converter to be coupled to a distribution network is disclosed. An example integrated circuit controller according to aspects of the present invention includes a switching control circuit that outputs a drive signal to control switching of a switch to regulate an output of the power converter. The integrated circuit controller also includes a cable drop compensator that outputs a compensated reference voltage signal to the switching control circuit in response to a switching signal. The switching signal is responsive to the drive signal. The compensated reference voltage signal is representative of a voltage value that is responsive to a distribution voltage across the distribution network and a load voltage across a load to be coupled to the distribution network. The switching of the switch is responsive to the compensated reference voltage signal and a feedback signal.10-09-2008
20130169243CURRENT MODE BOOST CONVERTER USING SLOPE COMPENSATION - A boost converter circuit that includes a power supply, an inductor coupled to the power supply to receive current from the power supply, a diode coupled to receive current from the inductor and coupled to provide current to a load as an output, an inductor switch coupled to a node between the inductor and the diode for selectively switching current from the inductor anyway from the diode, and a ramp circuit. The ramp circuit is coupled to the node between the inductor and the diode, and is configured to selectively sample a voltage at the node between the inductor and the diode via a sampling switch and use the sampled signal to produce a stabilization ramp to stabilize the output.07-04-2013
20130169245NOISE REDUCTION FOR ENVELOPE TRACKING - A direct current (DC)-DC converter, which includes a parallel amplifier, a radio frequency (RF) trap, and a switching supply, is disclosed. The switching supply includes switching circuitry and a first inductive element. The parallel amplifier has a feedback input and a parallel amplifier output. The switching circuitry has a switching circuitry output. The first inductive element is coupled between the switching circuitry output and the feedback input. The RF trap is coupled between the parallel amplifier output and a ground.07-04-2013
20130176004SWITCHING MODE POWER SUPPLY - The present disclosure discloses a switching mode power supply with constant peak current mode control. During the operation of the switching mode power supply, in one hand, the current flowing through a high-side switch is sensed and compared to a current reference signal to control the turning off of the high-side switch; in the other hand, the output voltage is sensed and compared to a voltage reference signal to control the turning on of the high-side switch. In addition, the current reference signal may be adjusted to a lower value when the switching mode power supply enters light load condition. By using the above control method, the system performance is highly increased.07-11-2013
20130176005DC/DC CONVERTER AND CONTROL METHOD THEREOF - The DC/DC converter includes a power unit, an output detection unit, a control unit and a compensation unit. The output detection unit detects an output stage of the power unit. The control unit provides a driving signal based on the output stage for the power unit to control the operation of the power unit. When the power unit operates in an intermittent working mode, the compensation unit provides a compensation signal for the control unit, and the control unit adjusts the driving signal according to the compensation signal, so that during at least one duty cycle an output power of the power unit in the intermittent working mode is higher than an output power of the power unit at a switching moment from a normal mode (continuous working mode) to the intermittent working mode, thereby when the load is not changed, the average number of driving signals is reduced.07-11-2013
20120249097ADAPTIVE INDUCTIVE POWER SUPPLY - A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected to a DC power source. When loads are added or removed from the system, the contactless power supply is capable of modifying the resonant frequency of the tank circuit, the inverter frequency, the inverter duty cycle or the rail voltage of the DC power source.10-04-2012
20120249094DIFFERENTIAL SENSING FOR VOLTAGE CONTROL IN A POWER SUPPLY CIRCUIT - In one general aspect, an apparatus can include a controller, and a power stage coupled to the controller and configured to be coupled to a power source. The power stage is configured to deliver an output voltage to a load module in response to the controller. The apparatus also includes a reference voltage circuit coupled to the controller and configured to be grounded to a first ground voltage different from a second ground voltage associated with the load module.10-04-2012
20130169244DIGITAL BUCK-BOOST CONVERSION CIRCUIT AND METHOD OF OPERATING THE SAME - A digital buck-boost conversion circuit includes an analog-to-digital converter configured to convert an output voltage signal into a digital signal, a pulse period control block configured to output a pulse period control signal based on degrees of scattering at different frequencies of the digital signal, a pulse generation block configured to output a pulse based on the pulse period control signal, and a buck-boost converter configured to convert the pulse into the output voltage signal.07-04-2013
20130113443SEMICONDUCTOR DEVICE - A semiconductor device includes: a unit configured to, in a period before power up, compare a voltage obtained by dividing a voltage of a first voltage node at a first division ratio with a voltage obtained by dividing a voltage of a second voltage node at a second division ratio and determine whether to activate an enable signal according to a result of the comparison; and a voltage driving unit configured to increase the voltage of the second voltage node when the enable signal is activated in the period before power up.05-09-2013
20130127426METHOD AND CONTROL DEVICE FOR CONTROLLING POWER FLOW WITHIN A DC POWER TRANSMISSION NETWORK - A method for controlling power flow within a DC power flow within a DC power transmission network includes two or more interconnected converter stations. The method includes the steps of: establishing a common feedback signal (U05-23-2013
20130141057CURRENT SOURCE WITH ACTIVE COMMON MODE REJECTION - A current source with active common mode rejection uses a principle of having a branch for the generation of the required current, to the output (06-06-2013
20100277141DIGITAL LOW DROPOUT REGULATOR - A low dropout (LDO) regulator for generating an output voltage on an output from an input voltage of an input source. The LDO regulator including a switch module to generate the output voltage. The switch module including at least two parallel connected switches responsive to corresponding switch control signals to regulate a flow of energy from the input source to the output. Each of the switches having an on-state and an off-state. A digital controller to sense the output voltage and in response to generate the switch control signals such that the output voltage is regulated to a predetermined amplitude.11-04-2010
20110215777ACTIVE VOICE BAND FILTER - An active voice-band filter includes a regulator to regulate an input current to the regulator and to convert DC voltage from an input bus to a higher DC voltage at an output of the regulator; an output voltage feedback loop, connected to the output of a regulator, for generating an output voltage value; and a current control loop for generating a control signal to regulate an input current of the regulator, where the control signal is based on an input bus current measurement and a reference voltage value. The reference voltage value is calculated using both of the output voltage value and an input bus voltage signal. The regulator regulates the input current to the regulator, based on the control signal, to reject voice band range current harmonics from the higher DC voltage.09-08-2011
20130147444Methods and Systems to Convert a Pulse Power Demand to a Constant Power Draw - Methods and systems to translate a pulse power demand of a pulse load to a constant power draw, and to maintain a desired peak output voltage over time. A power converter (PC) provides power from a power source to a charge store, which provides pulse power to the load. A PC controller continuously monitors an output current of the PC and an output voltage of the charge store, and controls the PC to draw constant power from the source, at a level indicated by a power command. A peak voltage controller periodically adjusts the power command, such as to compensate for time-varying effects, based on a peak voltage reference and the output voltage of the charge store measured at times of synchronization pulses. The peak voltage controller generates the synchronization pulses based on rising edges of a pulse current, or receives the synchronization pulses from the radar system controller.06-13-2013
20130093402INDUCTIVE LOAD CONTROLLING DEVICE - An inductive load controlling device in which a target current value is reached in a short time while suppressing overshoot, undershoot, and ringing, including a target value filter that receives a target current value of electric current to be supplied to the load and exhibits differential characteristics using a plurality of filter parameters; an inductive load controlling section that controls load current to be supplied to the load based on a filter output from the target value filter; a parameter memory section that stores parameters for the filter corresponding to a plurality of selection conditions; a selection condition detecting section that detects the selection conditions; and a parameter selection processing section that selects the filter parameters fitting to the selection condition out of the parameter memory section based on the selection condition detected by the selection condition detecting section and delivers the filter parameters to the filter.04-18-2013
20100308779SYSTEM, METHOD AND APPARATUS TO AUTOMATICALLY DETECT A TYPE OF A VARIABLE OUTPUT DC POWER SOURCE - A method includes coupling a variable output DC power source to power control circuitry, and detecting a type of the variable output DC power source in response to the coupling operation. In one embodiment, the detecting operation may include sending an interrogation signal from the power control circuitry to the variable output DC power source, and evaluating a response to the interrogation signal to determine the type of said variable output DC power source. Power control circuitry may include source type recognition circuitry configured to detect a type of a variable output DC power source in response to a coupling of the variable output DC power source to the power control circuitry.12-09-2010
20100308778ELECTRONIC SYSTEM, ELECTRONIC DEVICE AND POWER SUPPLY DEVICE - Provided is an electronic system wherein power is accurately supplied even with a power delivery line resistance and a connector contact resistance, and furthermore, a plurality of electronic devices having requiring different power supply voltages can be handled with one power supply device. The electronic system is provided with an electronic device (12-09-2010
20120274290METHODS AND APPARATUS FOR CONSTANT POWER/CURRENT CONTROL FOR SWITCH-MODE POWER CONVERTERS - In a first aspect, a control circuit is provided for use with a switch-mode power stage that provides an output voltage signal and an output current signal at an output power. The switch-mode power stage has a nominal voltage, a nominal current, a maximum current, an output power and a maximum power. The control circuit includes a voltage control loop and a current control loop, and the control circuit uses the voltage control loop to provide voltage mode control if the output current signal is greater than or equal to the nominal current and less than the maximum current, wherein the output power is substantially constant. Numerous other aspects are also provided.11-01-2012
20110234182Modulated supply stage with feedback to switched supply - There is disclosed a voltage supply stage comprising: a selection means for selecting one of a plurality of power supply voltages in dependance on a reference signal representing a desired power supply voltage; a combining means for combining the selected power supply voltage with a correction signal to generate an adjusted power supply voltage; and an adjusting means adapted to generate the correction signal in dependence on the reference signal and the adjusted power supply voltage, wherein the selection means is arranged to select the one of the plurality of supply voltages further in dependence on a signal derived from one of the inputs to the combining means.09-29-2011
20100315047Control Device for a Multi-phase DC-DC Converter and Related Multi-phase DC-DC Converter - A control device for a multi-phase DC-DC converter is disclosed. The multi-phase DC-DC converter includes a plurality of converting channels. The control device includes an error amplifier for comparing a feedback signal of the multi-phase DC-DC converter and a reference signal to generate a comparison result, a main comparator for comparing the comparison result and a first sawtooth signal corresponding to a first converting channel of the plurality of converting channels to generate a first PWM signal, and at least one computing module each corresponding to one of the plurality of the converting channels, for generating a PWM signal according to the comparison result, a corresponding sawtooth signal, a corresponding sensing signal, and a sensing signal corresponding to a previous converting channel of the converting channel to control the converting channel.12-16-2010
20130154583DYNAMIC VOLTAGE SCALING SYSTEM BASED ON ON-CHIP MONITORING AND VOLTAGE PREDICTION - The present invention discloses a dynamic voltage scaling system based on on-chip monitoring and voltage prediction, comprising a main circuit that has integrated on-chip monitoring circuits, a supply voltage scaling module, and voltage converters, wherein, the supply voltage scaling module comprises a sampling and statistics module designed to calculate the error rate of the main circuit in the current time slice, a state recording module designed to record the error rate and the corresponding supply voltage, an error prediction module, and a state transition probability generation module; the error prediction module predicts the error trend of the main circuit in a future time slice according to the state recording module and the state transition probability generation module, and generates regulation signals and sends to the corresponding voltage converters, so as to generate the voltage required for operation of the entire main circuit. The present invention utilizes the Markov theory to predict the “future” timing violation level of the circuit according to the “past” working condition and “current” working condition of the main circuit, and reserves some time for voltage scaling in the voltage converters; as a result, the dynamic voltage scaling has high directivity and purposiveness.06-20-2013
20130154584ELECTRIC TOOL ADAPTOR AND ELECTRIC TOOL SYSTEM USING SAME - An electric tool adaptor is configured to be disposed between an electric tool and a battery pack and attached detachably with respect to the electric tool and the battery pack. This adaptor includes a DC-DC converter configured to increase or reduce a voltage of the battery pack to convert the voltage to a drive voltage of the electric tool and supply the drive voltage to the electric tool.06-20-2013
20130181690ACTIVE DROOP POWER SUPPLY WITH IMPROVED STEP-LOAD TRANSIENT RESPONSE - An apparatus is provided that includes a switched mode power supply (SMPS) configured as a buck converter, the SMPS further including a voltage reference input and an inductor network; an active voltage droop (AVD) feedback loop coupled to an output of the inductor network, the AVD feedback loop configured to generate a correction to the voltage reference input based on measured current from the inductor network; and a frequency shaping network deployed in the AVD feedback loop.07-18-2013
20130187620POWER EFFICIENT TRANSCONDUCTANCE AMPLIFIER APPARATUS AND SYSTEMS - Embodiments and methods herein operate as two-stage voltage controlled current sources (i.e., dynamic current sources) operating in class AB mode. Phase-delayed current injection circuits are associated with first-stage bias, second-stage bias, or both. The current injection circuits operate to quickly re-charge inter-stage parasitic capacitance associated with the active side of the class AB dynamic current source shortly after that side becomes inactive. Doing so quickly dissipates an otherwise slowly-decaying residual drive signal to prevent the output stage from continuing to conduct after the associated side of the current source becomes inactive. Excessive current consumption and possible destructive operation of the output stage are mitigated as a result.07-25-2013
20120019217CONTROL CONCEPT FOR A DIGITALLY CONTROLLED MAGNETIC SUPPLY DEVICE - A method and a device control a magnetic supply device. The method includes the steps of executing a base structure of a control as a two-loop control having a voltage control loop for a magnetic voltage and a current control loop for the magnetic current, wherein the two control loops or circuits are preferably combined into one controller. The voltage control loop is executed as a status controller, wherein the return parameters for the status controller are adaptively adjusted as necessary to the behavior of a current converter, an output filter and a load. The behavior of the current converter, the output filter and the load are modeled by an observer (e.g. Luenberger observer, Kaiman filter) and the observer adapted to the effective behavior of the current converter, the output filter and the load is tracked. Finally, the current control loop is implemented as an adaptive PI controller.01-26-2012
20130200863BUCK DC-TO-DC CONVERTER HAVING A NOVEL OUTPUT PROTECTION MECHANISM - A buck DC-to-DC converter having a novel output protection mechanism, comprising: a buck converter circuit, having a line input end, a DC output end, a first feedback end, and a second feedback end; a voltage divider, having an input terminal and an output terminal, the input terminal being coupled to the DC output end of the buck converter circuit, and the output terminal coupled to the first feedback end of the buck converter circuit for providing a first feedback voltage; and an output current sensing resistor, having one end coupled to the DC output end of the buck converter circuit, and another end coupled to the second feedback end of the buck converter circuit for providing a second feedback voltage; wherein the buck converter circuit uses the first feedback voltage and the second feedback voltage to generate a protection signal.08-08-2013
20120086414TV Set Top Box with an Improved Ability to Survive a Transient Signal - A set top box used in a satellite TV system includes a diode coupled in a particular way to better protect an adjustable linear regulator used in the set top box from transient voltages as may result from lighting or the like.04-12-2012
20130207624Providing Power to a Component - Apparatus includes a first connection to a battery; a second connection to a component; a first path between the first and second connections including a non-upconverting voltage regulator and being absent of a voltage upconverter; a second path between the first and second connections including a voltage upconverter; and a controller. The controller is configured to determine a minimum operating voltage of the component; to determine whether a voltage provided at the first connection meets a predetermined relationship with respect to the minimum operating voltage of the component; and on a positive determination, to enable the first path and disable the second path, and on a negative determination, to disable the first path and enable the second path.08-15-2013

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