Class / Patent application number | Description | Number of patent applications / Date published |
323269000 | Linearly acting parallel connected | 15 |
20080238380 | HIERARCHICAL CONTROL FOR AN INTEGRATED VOLTAGE REGULATOR - A hierarchical control for an integrated voltage regulator may include a voltage regulator circuit with a plurality of parallel voltage cells, with each of the cells having a plurality of phases of interleaved voltage converters, and a feedback control associated with the cells to set identical current references for the phases. A multi-rail embodiment has a plurality of parallel voltage regulator circuits each with a plurality of parallel voltage cells, with each of the cells having a plurality of phases of interleaved voltage converters, and a feedback control associated with the circuits to sense parameters of the circuits and set identical parameter references for the phases. | 10-02-2008 |
20080238381 | Device and Method for Voltage Regulator with Stable and Fast Response and Low Standby Current - An apparatus and method for regulating voltage levels. The apparatus includes a first transistor and a second transistor. The first transistor and the second transistor are each coupled to a first current source and a second current source. Additionally, the apparatus includes a third transistor coupled to the second transistor and configured to receive a first voltage from the second transistor, and a fourth transistor configured to receive the first voltage from the second transistor and generate an output voltage. Moreover, the apparatus includes an adaptive system coupled to the fourth transistor. Also, the apparatus includes a delay system coupled to the third transistor and configured to receive a sensing current from the third transistor and generate a delayed current associated with a predetermined time delay. Additionally, the apparatus includes a current generation system. | 10-02-2008 |
20080258696 | SERIES REGULATOR CIRCUIT - A series regulator circuit for reducing current consumption, enabling switching between different current consumption modes, and suppressing output voltage fluctuations. A constant current source | 10-23-2008 |
20090079403 | Apparatus to provide a current reference - An apparatus is provided that includes a voltage generator to produce a voltage that compensates for temperature variation and a current source that generates a current reference based on the voltage from the voltage generator. | 03-26-2009 |
20100019744 | VARIABLE INPUT VOLTAGE REGULATOR - A variable input voltage regulator includes a first circuit configured to convert a first voltage from a first voltage source to a first current, and a second circuit electrically coupled to the first circuit and configured to mirror the first current to a voltage output node. The variable input voltage regulator further includes a third circuit electrically coupled to the voltage output node of the second circuit and configured to supply additional current to the voltage output node from a second voltage of a second voltage source in response to a control input. | 01-28-2010 |
20100079120 | Measuring the current through a load transistor - The measurement of a current through a load transistor is described. | 04-01-2010 |
20100181972 | Voltage regulator circuit - A voltage regulator circuit of the present invention includes an input circuit that inputs a voltage, an output circuit that outputs a voltage, a first differential amplifier that compares a predetermined reference voltage and a feedback voltage from the output circuit, a first transistor having a source connected to the input circuit, a drain connected to the output circuit, and a gate that inputs an output from the first differential amplifier, a second transistor having a source connected to the input circuit, a drain connected to the output circuit, a gate that inputs the output from the first differential amplifier, and a current driving capability that is less than the first transistor, and an overshoot adjusting circuit that turns off the first transistor if the feedback voltage exceeds a predetermined value. | 07-22-2010 |
20120068673 | Startup circuit for self-supplied voltage regulator - A startup circuit for starting up a self-supplied voltage regulator which initiates startup by applying a voltage from a voltage supply to the startup circuit thus causing a voltage at an output node to rise. This rise will start the operation of the differential amplifier of the voltage regulator. When the voltage at the output node has reached the desired final output voltage, the startup circuit disconnects from the voltage regulator. The criterion for switching off the startup circuit is determined by a comparator which compares the output current capability of the voltage regulator with its output current plus the startup current. Inputs to the differential amplifier, such as the reference voltage, derive their power from the output node. | 03-22-2012 |
20120262135 | LDO with improved stability - A low drop-out (LDO) voltage regulator which parallels a second pass device to a first pass device, where the second pass device has in series a small resistor. The small value resistor is a substitute for bond wires or capacitors with very low equivalent series resistances (ESR). A fast feedback loop is coupled to the junction of the second pass device and the small resistor and provides, via a Miller capacitor, a feedback signal to the amplifier of the voltage regulator. The added second pass device returns circuit stability by moving the fast-loop high frequency zero node back within the bandwidth of the circuit. | 10-18-2012 |
20130169247 | SEMICONDUCTOR INTEGRATED CIRCUIT - A semiconductor integrated circuit includes a plurality of output transistors each controlling the magnitude of an output voltage relative to the magnitude of a load current according to a control value indicated by an impedance control signal applied to a control terminal, a voltage monitor circuit outputting an output voltage monitor value indicating a voltage value of the output voltage, and a control circuit controlling the magnitude of the control value according to the magnitude of an error value between a reference voltage indicating a target value of the output voltage and the output voltage monitor value, and controls based on the control value whether any of such transistors be brought to a conducting state. The control circuit increases a change step of the control value relative to the error value during a predetermined period according to prenotification signals for notifying a change of the load current in advance. | 07-04-2013 |
20140084881 | LOW DROPOUT REGULATOR WITH HYSTERETIC CONTROL - Described is an apparatus comprising: an output stage having an input supply node to receive an input power supply and an output node to provide an output supply to a load; an amplifier to control current strength of the output stage according to the output supply and a reference voltage; and a hysteresis unit to monitor the output supply and operable to control the current strength of the output stage according to a voltage level of the output supply. Described is another apparatus which comprises: a plurality of charge pumps to adjust current strength of the output stage; and a logic unit to monitor the output supply and operable to control the plurality of charge pumps according to a voltage level of the output supply and one or more reference voltages. | 03-27-2014 |
20140103890 | SUPPLY NOISE CURRENT CONTROL CIRCUIT IN BYPASS MODE - A proposed inrush control circuit may work in the presence of supply noise. A linear regulator in bypass mode may be designed for inrush current control, but may be susceptible to irregularities from increased supply noise. The circuit may include a splitting of the bypass power MOS that are switched on with some delay during the power on to control the initial power-on inrush current. | 04-17-2014 |
20150042295 | DUAL MODE VOLTAGE REGULATOR WITH RECONFIGURATION CAPABILITY - A dual mode voltage regulator according to one embodiment includes a passive regulator circuit, a switching regulator circuit, and a controller circuit configured to determine parameters of an external select input. The controller is configured to selectively couple, on a cold boot up, either the passive regulator circuit or the switching regulator circuit between an input voltage port and an output load based on the determination of parameters. | 02-12-2015 |
20150042296 | VOLTAGE REGULATOR SOFT START - A linear voltage regulator is disclosed. The linear voltage regulator includes an amplifier. The linear voltage regulator also includes a plurality of power devices. At least one of the power devices is electrically coupled to the amplifier. A switch is configured to control at least one power device of the plurality of power devices and a delay component is configured to trigger the switch. | 02-12-2015 |
20150130427 | Low Dropout Regulator and Related Method - A device is configured to provide low dropout regulation. An amplifier stage includes a first transistor electrically connected to an output of the device, and a second transistor. A current mirror includes a third transistor electrically connected to the second transistor, and a fourth transistor electrically connected to the third transistor. The auxiliary current source has a control terminal electrically connected to a gate electrode of the fourth transistor. The pull down stage includes a fifth transistor having a gate electrode electrically connected to a drain electrode of the first transistor, and a sixth transistor having a gate electrode electrically connected to the gate electrode of the fourth transistor. The pull up transistor has a gate electrode electrically connected to a drain electrode of the fifth transistor. The first capacitor has a first terminal electrically connected to the gate electrode of the first transistor. | 05-14-2015 |