Class / Patent application number | Description | Number of patent applications / Date published |
363059000 | With voltage multiplication means (i.e., V out > V in) | 62 |
20080205099 | Power transistor circuit and the method thereof - The power transistor circuit with high-voltage endurance includes a first power transistor, a second power transistor and an enabling circuit. The first power transistor includes a first voltage endurance and a first inner resistance, while the second power transistor includes a second voltage endurance and a second inner resistance. The first voltage endurance and the first inner resistance are smaller than the second voltage endurance and the second inner resistance, respectively. The drain of the second power transistor is connected to the drain of the first power transistor and the enabling circuit. The enabling circuit enables the second power transistor first, and when the drain voltage of the first power transistor is smaller than the first endurance, the enabling circuit then enables the first power transistor. | 08-28-2008 |
20080273357 | SEMICONDUCTOR DEVICE - To provide a semiconductor device of which a manufacturing process is simplified and which has a boosting circuit in which the area of a capacitor element is reduced. The present invention includes a plurality of rectifying elements which is connected in series and has a rectifying function from a first input terminal portion to an output terminal portion; a first wiring and a second wiring, which are connected to a second input terminal portion, into which a signal and a signal obtained by inverting the signal are respectively input; and a boosting circuit including a plurality of capacitor elements each having a first electrode, an insulating film, and a second electrode and storing a boosted potential. The plurality of capacitor elements includes a capacitor element in which the first electrode and the second electrode are formed using conductive films, and a capacitor element in which at least the second electrode is formed using a semiconductor film. In the plurality of capacitor elements, at least a capacitor element in a first stage is a capacitor element in which the first electrode and the second electrode are formed using conductive films. | 11-06-2008 |
20100085786 | CONVERTIBLE CHARGE-PUMP CIRCUIT - A convertible charge-pump circuit includes: a charging circuit having a plurality of charging capacitors and a pumping circuit having an output port coupled to a pumping capacitor. The charging circuit is configured for charging the charging capacitors to store a plurality of potential differences, respectively, when the convertible charge-pump circuit is in a charging phase. The pumping circuit is configured for selecting at least one charging capacitor from the charging capacitors charged in the charging phase to generate an output voltage level at the output port according to a potential difference stored in the selected charging capacitor when the convertible charge-pump circuit is in a pumping phase. | 04-08-2010 |
20100110736 | DYNAMIC COMPENSATION FOR A PRE-REGULATED CHARGE PUMP - An apparatus is provided. The apparatus comprises an error amplifier that amplifies the difference between a reference voltage and a feedback voltage, a first variable impedance circuit coupled to the error amplifier that receives a control voltage from the error amplifier, a charge pump coupled to the variable impedance that receives an input voltage from the variable impedance, and a Miller compensator coupled to the charge pump and to the first variable impedance circuit. The Miller compensator receives the output voltage and output current from the charge pump. It also outputs the feedback voltage, adjusts the control voltage, and has a zero-pole that is proportional to a power of the output current of the charge pump. | 05-06-2010 |
20110032736 | MIRROR-IMAGE VOLTAGE SUPPLY - A voltage supply incorporates two voltage supplies connected in a mirror-image series arrangement to generate a DC voltage between the respective common terminals of the voltage supplies. | 02-10-2011 |
20120230071 | POWER SUPPLY CIRCUIT SYSTEM - A power supply circuit system includes a ring oscillator provided with a variable resistance circuit, a charge pump circuit outputting a boosted voltage in response to an oscillation output signal from the ring oscillator, a voltage regulator circuit adjusting the boosted voltage from the charge pump circuit, a first current comparator circuit comparing a first current flowing through the voltage regulator circuit with a first reference current, a second current comparator circuit comparing the first current with a second reference current, and a control circuit outputting control signals to control a resistance value of the variable resistance circuit in accordance with a first comparison signal from the first current comparator circuit and a second comparison signal from the second current comparator circuit. | 09-13-2012 |
20140071721 | VOLTAGE REGULATOR AND METHOD FOR REGULATING DUAL OUTPUT VOLTAGES BY SELECTIVE CONNECTION BETWEEN A VOLTAGE SUPPLY AND MULTIPLE CAPACITANCES - A voltage regulator including a first, second, and third capacitances, first switches, and second switches. A first terminal of the first capacitance is connected to a first output. The first output is at a first output voltage. A first terminal of the second capacitance is connected to a second output. The second output is at a second output voltage. The first switches connect a first terminal of the third capacitance to a voltage supply, the first output, or the second output. The second switches connect a second terminal of the third capacitance to a reference terminal, the first output, or the second output. The first and second switches are controlled, based on the first output voltage and the second output voltage, to: adjust voltages across the first, second, and third capacitances; maintain the first output at a first predetermined voltage; and maintain the second output at a second predetermined voltage. | 03-13-2014 |
20140092656 | POWER SUPPLY CIRCUIT - A power supply circuit is intended to suppress power consumption when a load is not driven and to shorten a required time to be taken until a boosted voltage to be supplied to a high-side MOS transistor is stabilized when the load is changed from a deactivated state to an activated state. | 04-03-2014 |
20150009731 | MULTILEVEL INVERTER - The present disclosure proposes an input power of each unit power cell of a cascaded H-bridge inverter that is mutually insulated. To this end, the present disclosure includes a phase shift transformer configured to output a voltage of predetermined phase by receiving an AC input power having a fixed frequency, and a plurality of unit power cells serially-connected configured to output a voltage having a predetermined phase by receiving a voltage provided by the phase shift transformer, wherein the phase shift transformer is configured to include the number of phase shifts corresponding to the number of the plurality of unit power cells. | 01-08-2015 |
363060000 | Including semiconductor means | 53 |
20080212346 | ANTENNA IMPEDANCE MODULATION METHOD - A method for modulating the impedance of an antenna circuit supplying pump signals to a charge pump comprising at least one first pump stage and one last pump stage, the last pump stage supplying a continuous voltage. The output of the first pump stage is short-circuited by means of a switch and the last pump stage goes on pumping electric charges and supplying the continuous voltage. Application in particular to RFID passive transponders. | 09-04-2008 |
20080212347 | SWITCHED-CAPACITOR REGULATORS - A switched-capacitor regulator is provided for regulating the output voltage of a voltage supply. The switched-capacitor regulator includes a supply input terminal capable of receiving a supply voltage, two or more flying capacitors, a regulation switch located between each flying capacitor and the supply input terminal, and a voltage control circuit. The activity of the regulation switches is controlled by the voltage control circuit. In one embodiment of the invention, the voltage control circuit includes a feedback resistance area having one or more feedback resistors located between the output of the flying capacitors and a ground terminal, a first gain stage connected to the feedback resistance area, and two or more second switchable gain stages, which are each connected to a regulation switch and the first gain stage. The switched-capacitor regulator operates in pseudo-continuous regulator mode using three-stage switchable operational amplifiers with time-multiplexed pole-splitting compensation. | 09-04-2008 |
20080239772 | SWITCHED CAPACITOR CONVERTERS - A switched capacitor converter has a supply voltage input, an output circuit with one or more load capacitors, a semiconductor switch network. The switch network is connected at a switch junction point and across the voltage input, and has one or more pairs of said first and second switches. Each pair of switches is associated with one of the load capacitors and each pair is connected in series. The converter also has a charging capacitor network connected across the semiconductor switch network and across the voltage input. The charging capacitor network has one or more charging capacitors and inductances connected between the switch junction point and the output circuit. Each of the charging capacitors and inductances is associated with one of the load capacitors. The load capacitors are each charged by the associated charging capacitor when the associated first switch is closed and the associated second switch is open. And the load capacitors are each discharged by the associated inductance when the associated first switch is closed and the associated second switch is open. | 10-02-2008 |
20080266913 | Portable Power Supply - A portable power supply includes a housing, and power circuitry providing an output AC waveform having a first positive voltage step level, a second higher positive voltage step level, a third lower positive voltage step level, a fourth negative voltage step level, a fifth higher negative voltage step level, and a sixth lower negative voltage step level. | 10-30-2008 |
20080278978 | HIGH VOLTAGE INDUCTIVE CHARGE PUMP DC-TO-DC CONVERTER ASSEMBLY - A method and apparatus for a power converter assembly charges a first capacitor and a second capacitor in parallel to a first voltage and at a first polarity, and then discharges the first capacitor and second capacitor in series at an output voltage that is greater than the input voltage and at a second polarity that is opposite the first polarity. This “charge pump” process is repeated and filtered to produce a continuous output. | 11-13-2008 |
20090016084 | ARRANGEMENT PROVIDED WITH A VOLTAGE CONVERTER FOR SUPPLYING VOLTAGE TO AN ELECTRICAL LOAD AND ASSOCIATED METHOD - An apparatus includes a voltage converter for supplying voltage to an electrical load. The voltage converter is electrically connected at an output to a terminal of a series circuit. The voltage converter includes mechanisms for connecting the electrical load and a current sink. The voltage supplied by the voltage converter is dependent on an input voltage and on a present multiplication factor. The apparatus also includes a first comparator, a second comparator, and selection logic. | 01-15-2009 |
20090059629 | VOLTAGE REGULATOR FOR INTEGRATED CIRCUITS - A voltage regulator for a charge pump includes a capacitor divider and a reset circuit. The capacitor divider produces, based on an input voltage (VPP), a sample voltage at a sampling node. The sampling node and a reference voltage VREF are connected to respective inputs of a comparator that generates an enable signal for the charge pump. The reset circuit connects to the divider and includes a first transistor connected between the sampling node and a biasing node. During a sampling mode, the reset circuit biases VDS of the first transistor to approximately zero at the regulation point to minimize subthreshold IDS. During reset intervals, the reset circuit applies VREF to the biasing node. The reset circuit may include a second transistor connected between the biasing node and a known level (e.g., ground) and a biasing transistor connected between the biasing node and VREF. | 03-05-2009 |
20090059630 | High-efficiency DC/DC voltage converter including capacitive switching pre-converter and down inductive switching post-regulator - A DC/DC converter includes a pre-converter stage, which may include a charge pump, and a post-regulator stage, which may include a Buck converter. The duty factor of the post-regulator stage is controlled by a feedback path that extends from the output terminal of the DC/DC converter to an input terminal in the post-regulator stage. The pre-converter steps the input DC voltage up or down by a positive or negative integral or fractional value, and the post-regulator steps the voltage down by a variable amount depending on the duty factor at which the post-regulator is driven. The converter overcomes the problems of noise glitches, poor regulation, and instability, even near unity input-to-output voltage conversion ratios. | 03-05-2009 |
20090097285 | VARIABLE LOAD, VARIABLE OUTPUT CHARGE-BASED VOLTAGE MULTIPLIERS - A charge-based voltage multiplier device comprising a charge-pump circuit and a charge-pump controller is provided. The charge-pump circuit is configured to multiply an input voltage signal (V | 04-16-2009 |
20090244940 | VOLTAGE GENERATING CIRCUIT - A voltage generating circuit is provided, including a voltage output terminal, a ground terminal, a capacitor, a selector, a first switch, and a second switch. The capacitor is connected between a pump signal and the output of the selector. The selector is controlled by a first control signal and used to select the voltage source or the voltage output terminal to connect the capacitor. The first switch is controlled by a second control signal, and the second switch is controlled by a third control signal. When the first switch is turn-on, the voltage output terminal is connected to the ground terminal. When the second switch is turn-on, the voltage output terminal is connected to the voltage source. | 10-01-2009 |
20090273955 | OPTIMUM STRUCTURE FOR CHARGE PUMP CIRCUIT WITH BIPOLAR OUTPUT - A charge pump circuit with bipolar output comprises a first switch capable of selectively connecting a first input terminal of a transfer capacitor to a voltage source, a second switch capable of selectively connecting a first input terminal of a first storage capacitor to said first input terminal of said transfer capacitor; a third switch capable of selectively connecting a second input terminal of said transfer capacitor to said voltage source; a fourth switch selectively connecting said second input terminal of said transfer capacitor to a ground terminal; and a fifth switch selectively connecting said second input terminal of said transfer capacitor to a second input terminal of a second storage capacitor. The charge pump circuit is collocated with clock signals to be selectively driven by a four-phase signal so as to produce bipolar voltages with magnitudes higher than the input voltage with minimum number of switches and capacitors and also accomplish the highest efficiency. | 11-05-2009 |
20090316452 | POWER SUPPLY HAVING MAXIMUM POWER POINT TRACKING FUNCTION - The present invention relates to power supplies, and more particularly, to a power supply having a maximum power point tracking function that controls power switching so that a detected power value is within a reference range having a maximum power point in a predetermined current-voltage curve. A power supply having a maximum power point tracking function according to an aspect of the invention includes: a converter section switching input power and converting the switched input power into predetermined DC power; and a maximum power point tracking section detecting a power value determined according to a switching operation of the converter section among power values included in a predetermined power-voltage curve, and controlling the switching operation of the converter section so that the detected power value is located within a predetermined reference range having a maximum power value among the power values included in the power-voltage curve. | 12-24-2009 |
20090323378 | SWITCHED CAPACITOR DC-DC VOLTAGE CONVERTER - The disclosure describes techniques for converting an input voltage level to two or more output voltage levels using only two pump capacitors and three switching phases. The disclosure also describes techniques for selectively controlling a dc-dc converter to operate in different conversion modes. One mode may use only two pump capacitors and three switching phases to produce output voltage levels with a first set of conversion ratios. Another mode may use two pump capacitors and two switching phases to produce output voltage levels with a second set of conversion ratios. The first mode may use three different subcircuit arrangements of the pump capacitors. The second mode may use two different subcircuit arrangements of the pump capacitors. A converter may include switches and pump capacitors that can be selectively configured to transition between two or three different subcircuits, thereby producing output voltages according to different conversion ratios on a selective basis. | 12-31-2009 |
20100002478 | SYSTEM TO IMPROVE A VOLTAGE MULTIPLIER AND ASSOCIATED METHODS - A system to improve a voltage multiplier may include a voltage multiplier circuit, and a capacitor carried by the multiplier circuit. The system may also include a transistor to charge an up voltage of the capacitor. | 01-07-2010 |
20110317456 | OPTIMUM STRUCTURE FOR CHARGE PUMP CIRCUIT WITH BIPOLAR OUTPUT - A charge pump circuit with bipolar output comprises six switches, one transfer capacitor, two storage capacitors and a power source. The gate of the switches have been provided an input voltage collocated with clock signals to control the turn-on time of the switches in order to adjust the level of the output voltage and thus produce bipolar voltage output. The clock signals have been selectively driven by a four-phase signal so as to produce bipolar voltages with magnitudes higher than the input voltage with minimum number of switches and capacitors and also accomplish the highest efficiency. | 12-29-2011 |
20120044726 | METHOD AND AN APPARATUS FOR CONTROLLING THE OUTPUT VOLTAGE OF A BOOST CONVERTER - The present invention concerns a method for controlling an output voltage of a boost converter composed of n bridge devices connected in series, each bridge device being composed of plural switches and a capacitor, the switches being controlled by periodical patterns decomposed in time intervals. In each time interval of a first and at least one second periodical patterns, the voltage between the input and the output of each ith bridge device with i from one to n, is equal to a null value, or an integer number k | 02-23-2012 |
20120081935 | SEMICONDUCTOR DEVICE - A semiconductor device includes rectifying elements which are connected in series and has a rectifying function from a first input terminal portion to an output terminal portion; a first wiring and a second wiring, which are connected to a second input terminal portion; and a boosting circuit including a plurality of capacitor elements each having a first electrode, an insulating film, and a second electrode and storing a boosted potential. The plurality of capacitor elements includes a capacitor element in which the first electrode and the second electrode are formed using conductive films, and a capacitor element in which at least the second electrode is formed using a semiconductor film. In the plurality of capacitor elements, at least a capacitor element in a first stage is a capacitor element in which the first electrode and the second electrode are formed using conductive films. | 04-05-2012 |
20120170334 | Hysteretic CL power converter - A novel switching hysteretic power converter is presented. The power converter combines the function of a capacitive charge pump with the function of an inductive step down converter to obtain a switching boost converter with a much simpler control method with respect to conventional inductive boost power converters. The hysteretic control provides stable operation in all conditions with excellent load transient response. Furthermore the hysteretic control allows high frequency switching reducing the size and cost of the passive components. The Discontinuous Conduction Mode of operation provides very high efficiency even at light loads. The presented power converter can be operated as a boost converter or as a buck converter simply by changing the switching phase of one switch. In both types of operation the efficiency of the hysteretic power converter can be quite high even at high switching frequencies. | 07-05-2012 |
20130058141 | SERIES AND PARALLEL HYBRID SWITCHED CAPACITOR NETWORKS FOR IC POWER DELIVERY - Series switches for power delivery. A regulator operated as a current source is arranged in parallel with a switched capacitor divider. A switched capacitor divider is configured in series with a plurality of linear regulators with each regulating one of a plurality of voltage outputs from the switched capacitor divider. In another embodiment, a series switch bridge has a first pair of switches connected in series with a second pair of switches across a voltage input, each switch within a pair of switches is switched in-phase with the other while the first pair of switches is switched out of phase with the second pair of switches. A balancing capacitor is coupled across one switch in both the first and second pair to be in parallel when either of the pair of switches is closed to reduce a charge imbalance between the switches. | 03-07-2013 |
20130083573 | REGULATOR AND HIGH VOLTAGE GENERATOR - A regulator includes a current path unit coupled between an input terminal and a ground terminal and including a first current determination unit coupled between the input terminal and a control node and configured to supply the high voltage to the control node so that a first or second current path is selected depending on a voltage of the control node, and a second current determination unit coupled between the control node and the ground terminal and configured to control the voltage of the control node depending on an input voltage, a voltage supply unit configured to supply the high voltage to an output terminal depending on the voltage of the control node, a voltage division unit configured to create a division voltage, and an amplification unit configured to amplify a difference between the division voltage and a first reference voltage. | 04-04-2013 |
20130094256 | Power Conversion Device Using a Wave Propagation Medium and Operating Method Thereof - The present solution relates operation of a power conversion device ( | 04-18-2013 |
20130229841 | DC-DC CONVERTER WITH MODULAR STAGES - An apparatus for electric power conversion includes a converter having a regulating circuit and switching network. The regulating circuit has magnetic storage elements, and switches connected to the magnetic storage elements and controllable to switch between switching configurations. The regulating circuit maintains an average DC current through a magnetic storage element. The switching network includes charge storage elements connected to switches that are controllable to switch between plural switch configurations. In one configuration, the switches forms an arrangement of charge storage elements in which at least one charge storage element is charged using the magnetic storage element through the network input or output port. In another, the switches form an arrangement of charge storage elements in which an element discharges using the magnetic storage element through one of the input port and output port of the switching network. | 09-05-2013 |
20130279221 | POWER SUPPLY - A power supply to convert AC power to DC power with a relatively constant voltage and linear current delivery. The DC power may be positive and/or negative voltage. A fluctuating voltage from an AC voltage source (e.g., a transformer) is utilized to charge and substantially discharge a storage device on a cycle by cycle basis. Both the output of the storage device and the output of the transformer is combined to provide relatively constant voltage to a load. Unlike a typical power supply, (a) the discharge of the storage device forces power into a load, (b) total capacitance may be substantially less than the capacitance of a typical power supply, (c) a shunt capacitor is not required, and (d) the transformer may be continuously utilized throughout the entire cycle (rather than for only a brief portion of each cycle), reducing noise. | 10-24-2013 |
20130294123 | CHARGE PUMP - A charge pump includes a timing signal generator for generating complementary first and second timing signals, and a voltage booster including a plurality of voltage boosting circuits. Each of the voltage boosting circuits includes input and output terminals, first and second capacitors each having first and second ends, and a switch module. The switch module is controllable to make or break electrical connection between the second end of the first capacitor and each of the input and output terminals and between the second end of the second capacitor and each of the input and output terminals. The first end of each of the first and second capacitors of a first one of the voltage boosting circuits receives a respective one of the first and second timing signals. | 11-07-2013 |
20140078795 | CHARGE PUMP SUPPLY WITH CLOCK PHASE INTERPOLATION - A voltage generator may include a plurality of charge pumps, plural sets of delay pipelines and a phase controller. Given M delay pipelines having N stages each, there may be M*N charge pumps each having a triggering input coupled to a respective stage or a respective pipeline. The phase controller may include a plurality of phase control stages interconnecting among the delay pipelines to induce timing offsets among the outputs of the delay stage. In an alternate design, intermediate nodes among the pipeline's delay stages may be coupled to triggering inputs of a sub-set of the charge pumps. The phase controller may have a plurality of phase control stages coupled, respectively, between the intermediate nodes of the delay pipeline and intermediate nodes of the phase control stages may be coupled to triggering inputs of another sub-set of the charge pumps. | 03-20-2014 |
20140268945 | RECONFIGURABLE SWITCHED CAPACITOR POWER CONVERTER TECHNIQUES - An apparatus for converting a first voltage into a second voltage includes a reconfigurable switched capacitor power converter having a selectable conversion gain. converter includes a cascade multiplier switched capacitor network having capacitors, each of which electrically connects to a stack node and to a phase node. A controller causes the network to transition between first and second operation modes. In the first mode, at least one capacitor is isolated from a charge transfer path of the reconfigurable switched capacitor power converter. Consequently, in the first mode of operation, the power converter operates with a first gain. In the second mode, the power converter operates with a second conversion gain. Meanwhile, a third voltage across the at least one capacitor is free to assume any value. | 09-18-2014 |
20140268946 | System and Methods for Two-Stage Buck Boost Converters with Fast Transient Response - Various embodiments of the invention provide for single and dual phase charge pump, two stage DC/DC buck-boost converters having fast line and load transient control irrespective of load conditions. In certain embodiments of the invention, this is accomplished by controlling a desired output voltage with an error amplifier that controls a plurality of hysteresis comparators. A dual phase charge pump architecture eliminates ripple currents and mode transitions and increases efficiency by splitting the total current between two paths. Certain embodiments allow to use low voltage semiconductor devices, which significantly reduces switching losses and further increases efficiency. | 09-18-2014 |
20140293667 | VOLTAGE BALANCING SYSTEM AND METHOD FOR MULTILEVEL CONVERTERS - A method of operating a flying capacitor multilevel converter having a direct current link and a plurality of phase legs each having a plurality of flying capacitors includes employing redundant states to balance flying capacitor voltages by charging or discharging flying capacitors. The redundant states are employed by obtaining a load current of the flying capacitor multilevel converter. If a load current value is lower than a threshold value then a capacitor current of a phase terminal capacitor is utilized to determine redundant states else a load current direction is utilized to determine the redundant states. | 10-02-2014 |
20140307493 | CHARGE PUMP CIRCUIT - There is described a charge pump circuit ( | 10-16-2014 |
20140369095 | PUMPING CIRCUIT - A pumping circuit includes a charge pump configured to generate a pumping voltage based on a first voltage in response to an oscillation signal, and an oscillator configured to provide a period-controlled oscillation signal based on the first voltage and a second voltage. | 12-18-2014 |
20140376287 | MULTILEVEL VOLTAGE SOURCE CONVERTERS AND SYSTEMS - Nested neutral point clamped (NNPC) multilevel power converter stages and systems are presented, in which the converter stage includes an NPC inverter core circuit with a flying (switched) capacitor nesting circuit, with the switches of the NPC core and the switched capacitor circuit being gated using selected redundant switching states to control the voltage of the switched capacitors to achieve a multilevel output voltage having equally spaced voltage step values. Multiple inverter stages can meet cascaded or connected in various configurations to implement single or multiphase power conversion systems, and higher output voltages can be achieved by forming to converter stages into an H-bridge configuration, and connecting multiple H-bridge stages in series with one another. | 12-25-2014 |
20150131344 | Boost Circuit - A boost circuit includes a power rail to provide a supply voltage, a switch transistor controlling output of a boosted signal from a source of the switch transistor, and a timing and voltage control circuit configured to generate an equalization (EQ) signal to be applied to a gate of the switch transistor. The EQ waveform has a level being an EQ high level, an EQ low level lower than the EQ high level, or an EQ clamped level between the EQ low level and the EQ high level. | 05-14-2015 |
20160020693 | Power Converter Utilizing a Resonant Half-Bridge and Charge Pump Circuit - A power converter is disclosed. The power converter includes a resonant half-bridge having a first power switch and a second power switch for driving a resonant circuit of the resonant half-bridge. The power converter further includes a charge pump coupled to the resonant half-bridge, where the charge pump is configured to selectively provide a positive current from the resonant circuit to an output stage of the power converter, and to selectively shunt to ground a negative current from the resonant circuit, based on an output stage feedback signal. In one implementation, the resonant circuit includes a series L-C circuit. The power converter is configured to provide a constant output current and/or a constant output voltage. | 01-21-2016 |
20160056731 | Portable Power Supply - A portable power supply includes a housing, and power circuitry providing an output AC waveform having a first positive voltage step level, a second higher positive voltage step level, a third lower positive voltage step level, a fourth negative voltage step level, a fifth higher negative voltage step level, and a sixth lower negative voltage step level. | 02-25-2016 |
20160065059 | SEMICONDUCTOR DEVICE - According to an embodiment of the present invention, a semiconductor device includes a charge pump circuit having a plurality of booster units which are connected in series between an input terminal and an output terminal, each of the plurality of booster units includes: a main transistor that is diode-connected so as to cause a forward current to flow in a direction from an internal input terminal toward an internal output terminal; a sub-transistor that is connected between a first terminal of the main transistor and a back-gate terminal of the main transistor and has a control terminal connected to a second terminal of the main transistor; a resistor that connects the second terminal of the main transistor and the back-gate terminal of the main transistor; and a capacitor that is connected between the internal output terminal and a clock wire. | 03-03-2016 |
20160072382 | CONTROLLING A POWER SUPPLY VOLTAGE FOR A HIGH-SIDE GATE DRIVER - This disclosure describes techniques for controlling a power supply voltage for a high-side gate driver that is used in a power converter. In some examples, in response to an overvoltage condition that occurs on an input voltage lead of a power converter, a power converter may decouple a terminal of a charge pump capacitor from the input voltage lead, and couple the terminal of the capacitor to a reference voltage lead. In further examples, in response to an overvoltage condition that occurs on an input voltage lead of a power converter, a power converter may turn off both switching transistors. | 03-10-2016 |
20160094123 | FRACTIONAL OUTPUT VOLTAGE MULTIPLIER - Various circuits, apparatuses and methods are disclosed for generating a DC voltage conversion. In an example embodiment, an apparatus includes a DC voltage multiplier having a first capacitor. In a first mode, the first capacitor is charged to store a first voltage between first and second terminals of the capacitor. In a second mode, the DC voltage multiplier shifts a voltage of the second terminal up to a second voltage, thereby shifting the first terminal to a third voltage. The apparatus also includes a fractional output control circuit that when enabled, connects a second capacitor between the first terminal of the first capacitor and the ground reference voltage. The connecting of the second capacitor causes the first terminal of the first capacitor to be pulled down to a voltage between the first and third voltages when the second terminal is shifted up to the second voltage. | 03-31-2016 |
20160190919 | High Side Switch For Selectively Supplying Power From A Power Supply To A Load - A circuit arrangement for selectively supplying power from a power supply to a load includes a semiconductor switch, such as an n-channel FET, along with a gate control and a charge pump. The circuit additionally includes a diode located in a ground path between a ground connection of the charge pump and a circuit ground, and a capacitor connected between the power supply and the diode. The added diode and capacitor allow the charge pump to maintain the FET in an ON state during a momentary voltage drop of the supply voltage. This circuit is preferably used with a high side switch integrated circuit. | 06-30-2016 |
20160197552 | DC-DC CONVERTER WITH MODULAR STAGES | 07-07-2016 |
363061000 | For rectifying | 14 |
20080266914 | PASSIVE, BACKSCATTER-BASED TRANSPONDER - A passive, backscatter-based transponder is provided that includes a rectifier that generates an output DC voltage from an input AC voltage for the voltage supply of the transponder, whereby the rectifier includes a first rectifier unit and at least one second rectifier unit. The first rectifier unit and the second rectifier unit are connected in parallel and dimensioned for operation in an identical frequency range. | 10-30-2008 |
20090257256 | HIGH EFFICIENT INPUT CURRENT SHAPING FOR AC TO DC CONVERTERS WITH POWER FACTOR CORRECTION REQUIREMENT - A high efficient input current shaping AC to DC converter with PFC front end that reduces input current harmonics is provided. In one embodiment, an AC to DC converter connectable with an alternating current source and operable to output a direct current comprises a PFC front end followed by a DC/DC converter. The PFC front end reduces harmonic components present in an input current waveform received by the PFC front end from the alternating current source and includes current steering circuitry and, optionally, valley filling circuitry. The DC/DC converter comprises one that presents pure resistive input impedance to the PFC front end. The DC/DC converter outputs the direct current to a load connected thereto. | 10-15-2009 |
20090303762 | POWER FACTOR CORRECTION RECTIFIER THAT OPERATES EFFICIENTLY OVER A RANGE OF INPUT VOLTAGE CONDITIONS - A PFC rectifier comprises a first converter having a first output capacitor and a second converter having a second output capacitor. The he first and second capacitors are coupled to each other to increase the output voltage of the PFC rectifier. Fore example the first or second output capacitors can be serially coupled to each other. At least one or both of the first or second converters comprise buck or buck-boost converters, including inverting or non-inverter buck converters. The first and second converters can also form a bi-directional ac-ac inverter. | 12-10-2009 |
20100135052 | VOLTAGE MULTIPLIER WITH IMPROVED POWER EFFICIENCY AND APPARATUS PROVIDED WITH SUCH VOLTAGE MULTIPLIER - A voltage multiplier comprising a chain of multiplier stages, each multiplier stage (STGj) comprising first and second inputs (IPIj, IP | 06-03-2010 |
20100296321 | DIRECT AC POWER CONVERTING APPARATUS - A control section controls a current-source converter while a switch is conducting, to render conducting a pair of a high-aim side transistor and a low-arm side transistor (for example, transistors) which are connected to any one of input lines, performs voltage doubler rectification on a voltage between a neutral phase input line on which a resistor is provided and any one of the input lines, to serve for charging of clamp capacitors. | 11-25-2010 |
20110157933 | HIGH VOLTAGE POWER SUPPLY - A high voltage power supply may include a switching unit, a voltage resonant unit, a connection part, a rectifier unit, a voltage amplifying unit, a voltage output unit, and a frequency control unit. The switching unit is driven per a frequency signal. The voltage resonant unit is connected to the switching unit and includes an inductor, to which a voltage is applied, and a capacitor. The connection part connects the switching unit and the inductor. The rectifier unit includes a diode that is connected to a power-supply voltage side of the inductor via a capacitor. The voltage output unit outputs a voltage obtained from the voltage amplifying unit. Moreover, the frequency control unit controls a frequency of the frequency signal per a control signal used to set a voltage output from the voltage output unit and an output signal output from the voltage output unit. | 06-30-2011 |
20120087162 | HIGH VOLTAGE POWER SUPPLY - A high voltage power supply includes a frequency signal generation unit, a voltage generation unit, and a voltage amplifying unit. The frequency signal generation unit generates a frequency signal. The voltage generation unit generates an input voltage according to the frequency signal generated by the frequency signal generation unit. The voltage amplifying unit amplifies and outputs the input voltage by rectifying and smoothing the input voltage a plurality of times. A voltage output by the voltage amplifying unit is changed by changing a frequency of the frequency signal. | 04-12-2012 |
20120195080 | HIGH-VOLTAGE REGULATED POWER SUPPLY - The disclosed embodiments relate to a power-supply circuit, an electronic device that includes the power-supply circuit, and a method for generating high-voltage DC power from AC line power using the power-supply circuit. This power-supply circuit includes a voltage multiplier and a low dropout (LDO) regulator, and does not include a step-up transformer. Conventional power supplies often use a custom step-up transformer, which is expensive unless the power supplies are manufactured in high quantities. In contrast, one embodiment of the present disclosure provides a solid-state implementation of a 700 V regulated power supply that can take up to a 1020 V input from an 6× voltage multiplier powered from the AC mains. Hence, the disclosed power-supply circuit eliminates the need for large, heavy and expensive step-up transformers and chokes that are used in conventional high-voltage DC power supplies. | 08-02-2012 |
20120262959 | POWER SUPPLY WITH INTEGRATED LINEAR HIGH VOLTAGE MULTIPLIER AND CAPACITORS THEREFOR - A high voltage power supply for use in small diameter spaces such as in oil well logging devices includes an AC voltage source which provides an AC voltage to a voltage multiplier circuit that converts the AC voltage to a high DC voltage. A parallel or combination parallel-series multiplication circuit is used, rather than a series multiplication circuit, to reduce the reverse voltage across each semiconductor rectifier in the multiplication circuit. A plurality of parallel capacitors is constructed using an elongate common capacitor electrode with individual capacitors formed from individual capacitor electrodes spaced along and separated from the common electrode by a layer of dielectric material. The layer of dielectric material can be tapered along the common electrode, and additional dielectric material can be positioned between edges of adjacent individual electrodes. A high voltage end individual electrode can be made wider to increase its capacitance. | 10-18-2012 |
20120281445 | TRANSFORMER UNIT - A transformer unit includes: a transformer which is mounted on a printed board, and which includes a bobbin around which at least a primary winding and a secondary winding are wound and a core which is inserted into a center of the bobbin; and a component holding portion configured to hold a component at an outer peripheral portion except for a mount side to be mounted on the printed board. The transformer unit further includes a voltage doubler rectifying circuit which is provided at the component holding portion and which is configured to rectify a high-frequency high voltage applied from the secondary winding. The secondary winding is connected to a lead terminal of a high-voltage component constituting the voltage doubler rectifying circuit via tension absorbing means provided at the bobbin. | 11-08-2012 |
20130242627 | MONOLITHIC HIGH VOLTAGE MULTIPLIER - High voltage diode-connected gallium nitride high electron mobility transistor structures or Schottky diodes are employed in a network including high-k dielectric capacitors in a solid state, monolithic voltage multiplier. A superjunction formed by vertical p/n junctions in gallium nitride facilitates operation of the high electron mobility transistor structures and Schottky diodes. A design structure for designing, testing or manufacturing an integrated circuit is tangibly embodied in a machine-readable medium and includes elements of a solid state voltage multiplier. | 09-19-2013 |
20140104904 | POWER MANAGEMENT DEVICE OF A TOUCHABLE CONTROL SYSTEM - A power management device of a touchable control system includes a boost circuit, a storage circuit, a detection circuit and a loading circuit. The boost circuit has an output terminal and generates an output voltage. The storage circuit electrically connects to the output terminal of the boost circuit and stores the output voltage. The detection circuit electrically connects to the storage circuit so as to detect the output voltage. The loading circuit electrically connects or disconnects to the output terminal of the boost circuit according to a predetermined value of the output voltage. | 04-17-2014 |
20150070951 | MULTIPLIER-DIVIDER CIRCUIT AND AC-TO-DC POWER CONVERTING APPARATUS INCORPORATING THE SAME - An AC-to-DC power converting apparatus includes a power factor correction circuit generating a DC output voltage based on a rectified voltage obtained through rectifying an AC input voltage and on a PWM signal generated based on an adjustment current and a predetermined ramp signal. A multiplier-divider circuit includes: a ramp generating unit generating a ramp signal based on a clock signal and on a first detection voltage associated with the rectified voltage; a control unit generating a control signal based on the clock signal, the ramp signal, and a detection voltage generated based on the DC output voltage; and an output unit generating an adjustment signal based on an input signal associated with the rectified voltage and the control signal. | 03-12-2015 |
20160190952 | Power Supply Device - According to one embodiment of the present invention, when a power supply device including first and second amplification units which share an energy storage element is used, it is possible to reduce voltage stress on a semiconductor device and to consistently maintain voltages output to the first and second amplification units by independently adjusting the amplification rates of the first and second amplification units. | 06-30-2016 |