Electricity: power supply or regulation systems inventions 07/08

20080180070 - Reference voltage generation circuit: An object of the invention is to provide a reference voltage generation circuit relatively unaffected by ambient temperature, capable of supplying reference voltage equal to or less than the bandgap voltage of silicon. The reference voltage generation circuit includes: a current generation circuit which generates current; and a current-voltage conversion... Agent: Greenblum & Bernstein, P.L.C

20080180071 - Method and apparatus for overshoot and undershoot errors correction in analog low dropout regulators: The present invention provides a method and apparatus for dynamically correcting overshoot and undershoot errors in an analog integrated circuit by improving the reaction time (Δt) of the analog integrated circuit. Equivalently, an error correction circuit is disclosed including an overshoot correction circuit and an undershoot correction that are only... Agent: Perkins Coie LLP Patent-sea

20080180072 - Pulse width modulation (pwm) circuit and method for enabling the same: A pulse width modulation (PWM) circuit and a method for enabling the same are provided. The method includes the steps of: receiving a first power voltage and a second power voltage; providing a high-side driving power pin, wherein the peripheral circuit of the high-side driving power pin is adapted for... Agent: J C Patents, Inc.

20080180073 - Power supply with high efficiency and low noise: The present invention discloses a power supply comprising: a switching regulator circuit converting an input voltage to an intermediate voltage; a low dropout linear regulator circuit converting the intermediate voltage to an output voltage so as to supply a load current to a load; and a feedback control circuit which... Agent: Tung & Associates Suite 120

20080180074 - Voltage regulator and associated methods: A regulated voltage is generated at an output terminal of a voltage regulator circuit having at least one input terminal. A feedback signal is coupled from a first transistor coupled in parallel with a first resistor between the output terminal and the input terminal. The feedback signal is coupled to... Agent: Schwegman, Lundberg & Woessner / Infineon

20080180075 - Current source with indirect load current signal extraction: A switching circuit for supplying current to a load has a switching element, an inductive element coupled to the switching element, and a load current extraction circuit responsive to current in the inductive element for producing a load current signal as a simulated current approximating current in the load.... Agent: Mcdermott Will & Emery LLP

20080180076 - Power supply control: A method includes simultaneously driving a load via first and second magnetically coupled regulator phases for a first duration, uncoupling one of the phases from the load after the first duration, and, after uncoupling the one phase from the load, allowing a current through the one phase to decay. For... Agent: Graybeal, Jackson, Haley LLP

20080180077 - Power-supply control: An embodiment of a power-supply controller is operable to couple a first node of a first inductor to first and second reference nodes, the first inductor composing a first phase of a power supply and having a second node coupled to an output node of the power supply. The controller... Agent: Graybeal, Jackson, Haley LLP

20080180078 - Switching power supply and method of controlling thereof: The switching power supply can reduce electric power consumption in the standby mode, while preventing overcurrent at the start of the switching power supply, as well as providing protection against short-circuiting. The switching power supply includes a switching control circuit that provides a PFM control when a light-load judging section... Agent: Rossi, Kimms & Mcdowell LLP.

20080180079 - Voltage regulator: A voltage regulator according to the present invention is operated stably. Regardless of a condition of a load (25), a variation in drain voltage of a PMOS transistor (34) is made equal to a variation in output voltage (Vout) at an output terminal of the voltage regulator. Then, a variation... Agent: Bruce L. Adams, Esq. Adams & Wilks

20080180080 - Linear voltage regulator with improved large transient response: Various voltage regulators and/or voltage regulation systems are disclosed. For example, a voltage regulation system that includes a source follower output is disclosed. The source follower output includes a transistor where the source of the transistor provides a baseline voltage to a regulated voltage output node. The voltage regulation system... Agent: Hamilton And Desanctis

20080180081 - Techniques for handling low line voltage conditions in power supply units: A technique for addressing a low line voltage condition in an information handling system includes determining whether a magnitude of an input voltage of a power supply unit (PSU) is below a first threshold for at least a first time period. The technique also includes adjusting, based on the determining,... Agent: Larson Newman Abel Polansky & White, LLP

20080180082 - Power regulator with constant voltage output: A power regulator with a constant-voltage output is provided, which includes a voltage regulator module and a voltage buffer module, wherein the voltage regulator module is spaced from a load by the voltage buffer module, so that an output voltage of the voltage regulator module is not affected by the... Agent: Rabin & Berdo, PC

20080180083 - Power converter driver with split power supply: A power converter driver that is supplied with two different voltages.... Agent: Ostrolenk Faber Gerb & Soffen

20080174283 - Robust ground start detection: A communication card including a card substrate, a power interface adapted to receive power from a power source and distribute it to elements mounted on the card substrate and a ground start detection circuit on the card substrate. The card additionally includes an active current regulating circuit adapted to receive... Agent: Ryan, Mason & Lewis, LLP

20080174284 - Emi suppressing regulator: A regulator circuit receives a power supply and provides a regulated power supply output suitable for integrated circuitry. It has a controllable current source circuit, a controller and a capacitor, such that an output of the controllable current source circuit can provide a lower frequency current part of the regulated... Agent: Workman Nydegger

20080174285 - Common electrode voltage generation circuit, display driver and electronic instrument: A common electrode voltage generation circuit that supplies a high-potential-side voltage or a low-potential-side voltage to a common electrode opposite to a pixel electrode through an electro-optical substance. The common electrode voltage generation circuit includes a first high-potential-side voltage generation circuit that outputs a first high-potential-side voltage, an output of... Agent: Oliff & Berridge, Plc

20080174287 - Organic light emitting display having dc-dc converter: An organic light emitting display having a DC-DC converter with freewheel diodes replaced by switches integrated into a switching controller. This way, power consumption is reduced by truly shutting down a current path when the DC-DC converter does not operate, and the size and weight of the DC-DC converter may... Agent: Christie, Parker & Hale, LLP

20080174286 - Quick response switching regulator and control method thereof: A quick response switching regulator comprises a power stage having a pair of high-side switch and low-side switch and an inductor connected together by a switching node, a feedback circuit for producing a feedback signal, and a control circuit producing control signals with reference to the feedback signal to control... Agent: Rosenberg, Klein & Lee

20080174288 - Charge pump regulator and circuit structure: There is disclosed a regulator for a charge pump having an input signal and generating an output signal at a value greater than the input signal. The charge pump comprises at least a capacitor and at least a device for charging and discharging the capacitor; the regulator comprises means having... Agent: Seed Intellectual Property Law Group Pllc

20080174289 - Fast low dropout voltage regulator circuit: A voltage regulator includes first and second closed-loop amplifiers and a N-type transistor. The first amplifier receives a first reference voltage and a feedback voltage. The second amplifier is responsive to the first amplifier and to the regulated output voltage of the regulator. Both amplifiers are biased by a biasing... Agent: Townsend And Townsend And Crew, LLP

20080174290 - Voltage generation circuit: According to an aspect of the present invention, there is provided a voltage generation circuit including: first and second reference terminals to output first and second reference voltages, respectively; first PMOS and first NMOS transistors connected between high and low level power supply lines in series; an output terminal connected... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080174291 - Power supply system and apparatus: The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input terminals and the output terminals of the switched mode power supply system are separated by an insulation barrier, and the... Agent: Locke Lord Bissell & Liddell LLP Attn: Ip Docketing

20080174292 - Switching regulator capable of efficient control at control mode change: A switching regulator includes a switching transistor to switch, an inductor to store charge from an input voltage, a comparator to compare a voltage at a connecting node of the switching transistor and the inductor with a predetermined voltage and generate a binary signal, a detector to detect a voltage... Agent: Dickstein Shapiro LLP

20080174293 - Controller with loop impedance modulation for power converter: A control circuit is provided to generate a mode signal at light load of the power converter. The mode signal is coupled to disable the switching signal for saving power. The impedance of an input circuit is increased in response to the mode signal. Furthermore, a soft start circuit is... Agent: J C Patents, Inc.

20080174294 - Constant current circuit: In order to prevent interference of signals in a plurality of outputs from a current mirror circuit, the current mirror circuit comprises a current mirror input transistor Q1 through which a constant current flows and a plurality of current mirror output transistors Q7 and Q8 which have control ends commonly... Agent: Osha Liang L.l.p.

20080174295 - Device and method for controlling supply voltage/frequency using information of process variation: A device capable of controlling a supply voltage and a supply frequency using information of a manufacturing process variation includes a data storage device storing data indicating performance of the device a decoder decoding the data stored in the data storage device and outputting decoded data, and a frequency control... Agent: F. Chau & Associates, Llc

20080169792 - Power converter with snubber: A buck or boost converter, which includes a first inductor, a controlled switch, a main diode, and an output capacitor, also includes a snubber circuit to reduce losses. The snubber circuit includes a second inductor in a path in series with the switch and main diode of the converter, a... Agent: Smart & Biggar P.o. Box 2999, Station D

20080169793 - Semiconductor apparatus: The transistor for synchronous rectification is connected parallel to the transistor for rectification. A control signal is provided to a gate of the transistor for synchronous rectification so that a switching operation that is opposite to an operation of the switching transistor may be performed. The transistor for synchronous rectification... Agent: Dickstein Shapiro LLP

20080169794 - Systems for providing a constant resistance: A system for providing a desired substantially constant resistance includes a first transistor interconnected between a first node and a second node. The system also includes a second transistor, the second transistor being diode connected, the first transistor and the second transistor forming a current mirror. A voltage divider is... Agent: Texas Instruments Incorporated

20080169795 - Compensating nmos ldo regulator using auxiliary amplifier: An LDO (low dropout) regulator including a pass transistor having a first electrode coupled to produce an output voltage of the LDO regulator, a control electrode, and a second electrode coupled to receive an input voltage of the LDO regulator. An error amplifier has a first input coupled to a... Agent: Texas Instruments Incorporated

20080169796 - Dc-dc converter with adaptive switching parameter adjustment: The present invention relates to a fully digital DC/DC automatic up/down converter circuit (10) for converting an input voltage to an output voltage of a predetermined value based on a switching operation. The switching operation comprises switching operation cycles, which comprise at least one switching operation phase. The converter is... Agent: Nxp, B.v. Nxp Intellectual Property Department

20080169797 - Multi-phase voltage regulator: A multiphase voltage regulator provides a voltage to an output terminal. The voltage regulator includes N parallel switches providing respective current phases that are added together to generate a total current for a general load coupled to the output terminal. The voltage regulator also includes N inductive circuits. Each inductive... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20080169798 - Method for controlling current in a load: One embodiment relates to a control system. The control system includes a controller configured to drive a load based on a set-point of the load. The controller is also configured to measure a load characteristic of the load and compute an average load characteristic. The controller is further configured to... Agent: Eschweiler & Associates LLC

20080164853 - Bidirectional power conversion with multiple control loops: Bidirectional power conversion systems provide the ability to change power attributes to and from a component. Current bidirectional power conversion systems use a unidirectional power converter for each direction. The integration of the two normally independent power converters results in a bidirectional power converter with nearly half the size, weight,... Agent: Mcdermott Will & Emery LLP

20080164854 - Methods and apparatus for simulating resistive loads: Methods and apparatus for simulating resistive loads, and facilitating series, parallel, and/or series-parallel connections of multiple loads to draw operating power. Current-to-voltage characteristics of loads are altered in a predetermined manner so as to facilitate a predictable and/or desirable behavior of multiple loads drawing power from a power source. Exemplary... Agent: Wolf Greenfield & Sacks, P.C.

20080164855 - Systems and methods for selectively changing current limit of a battery controller: Systems and methods for selectively changing the current threshold of current limiting circuitry are provided. The current limit threshold of current limiting circuitry may be selectively changed based on a detected power source using a resistive network. The current limiting threshold may be selected by changing a resistance value of... Agent: Ropes & Gray LLP

20080164856 - Current sensing circuit and power supply using the same: A current sensing circuit and power supply using the same are provided. The current sensing circuit includes a transistor, a control circuit and a sensing circuit, wherein the voltage endurance capability between a drain terminal of the transistor and a gate of the transistor is larger than the voltage endurance... Agent: Jianq Chyun Intellectual Property Office

20080164857 - Control of a dc power supply: A control circuit for a DC voltage supply is provided that includes a circuit, an error amplifier and modulator. The circuit is operable to measure a voltage difference between a negative voltage rail and a ground reference in the DC voltage supply. The circuit is further operative to create an... Agent: Fogg & Powers LLC

20080164858 - Method and apparatus to limit output power in a switching power supply: Techniques are disclosed to adjust a current limit in a switching regulator. One example switching regulator includes a comparator having first and second inputs and an output. The first input of the comparator is adapted to sense a current flow through a switch and the second input of the comparator... Agent: Blakely Sokoloff Taylor & Zafman

20080164859 - Digital current mode controller: A digital current-mode controller for a DC-DC converter is disclosed. The controller comprises a digital current reference; and a current loop compensator adapted to receive a digital current error signal derived from a digital current sample sensed from the DC-DC converter and the digital current reference and to generate a... Agent: Hensley Kim & Holzer, LLC

20080157727 - Power factor correction apparatus: A power factor correction apparatus is for correcting a power factor of transmission lines. The power factor correction apparatus includes a switch, a compensator, a detecting apparatus, a voltage processing circuit, a voltage comparison unit, and a time-delay unit. The switch is electrically connected to the transmission lines. The compensator... Agent: Pce Industry, Inc. Att. Cheng-ju Chiang

20080157728 - Reactive-power control apparatus and reactive-power compensator using the same: In a conventional reactive-power compensator using a static reactive-power compensator (SVC), there are many cases in which the SVC is operating in a state in which it generates an amount of reactive power equivalent to a large part of its capacity. When an unforeseen large voltage fluctuation occurs in this... Agent: Buchanan, Ingersoll & Rooney Pc

20080157729 - Charge pump regulator with multiple control options: A voltage generator has a control circuit for controlling a dual-mode charge pump that has multiple control options provided by an optional pull down control signal and an optional stop control signal. The dual-mode charge pump is enabled by a high voltage enable control signal from a control circuit to... Agent: Schneck & Schneck

20080157730 - High-voltage generation circuit and method for reducing overshoot of output voltage: A high-voltage generation circuit used for a non-volatile memory device reduces the overshoot of a high voltage by controlling a current for sensing the high voltage based on the level of the high voltage or by delaying the operation of an oscillator, which generates a clock signal for generating the... Agent: F. Chau & Associates, Llc

20080157731 - Generation of analog voltage using self-biased capacitive feedback stage: Analog voltage drain with reduced current drain is achieved by a a new capacitive-divided feedback architecture. During the operational phase an op amp monitors a capacitively-divided fraction of the output voltage, and drives a current sink or source accordingly; during an initial phase the output is forced to the correct... Agent: Groover/unassigned

20080157732 - High-efficiency dc/dc voltage converter including capacitive switching pre-converter and up 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 boost 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... Agent: Patentability Associates

20080157733 - High-efficiency dc/dc voltage converter including up inductive switching pre-regulator and capacitive switching post-converter: A DC/DC converter includes a pre-regulator stage, which may include a boost converter, and a post-converter stage, which may include a charge pump. The duty factor of the pre-regulator stage is controlled by a feedback path that extends from the output terminal of the pre-regulator stage or the post-converter stage.... Agent: Patentability Associates

20080157734 - Charge pump: A charge pump for converting a voltage at an input node into a regulated voltage and outputting the regulated voltage at an output node, includes: a first capacitor; a first switch with adjustable on-state resistance coupled between a first electrode of the first capacitor and the output node; a second... Agent: Pce Industry, Inc. Att. Cheng-ju Chiang

20080157735 - Adaptive pole and zero and pole zero cancellation control low drop-out voltage regulator: A adaptive pole and zero and Pole-Zero Cancellation Control Low Drop-Out (LDO) regulator is provided, which includes a regulation unit, an error amplifier, a Miller Effect Pole control unit, a Pole Zero Cancellation delay unit, and a feedback network. Pole and Zero could be adaptive regulated depend on various loads... Agent: Rabin & Berdo, Pc

20080157736 - Controller for dc-dc converters with bypass compensation: A controller is provided for DC-DC converters of the type associated with a half-bridge driving stage of at least one inductive load, with a pair of power MOS transistors in Highside and Lowside configuration being driven by a corresponding converter. The controller includes an input for connection to a terminal... Agent: Fleit, Kain, Gibbons, Gutman, Bongini & Bianco P.l.

20080157738 - Dc-dc converter capable of performing for wide and dynamic voltage range: This patent specification describes a DC-DC converter which includes a switch configured to control an output voltage, a driver circuit configured to drive the switch, a flip-flop configured to control the driver circuit, an error amplifier configured to compare a feedback voltage of the output voltage with a reference voltage,... Agent: Cooper & Dunham, LLP

20080157737 - Digital compensator design method and digital compensator for a switching mode power supply: A method for designing a digital compensator for a switching mode power supply is provided such that the digital compensator has complex conjugated zero pair or a right hand pole to eliminate the complex conjugated pole pair or right hand zero in the transfer function of the control-to-output voltage of... Agent: Rosenberg, Klein & Lee

20080157739 - Method and apparatus to improve regulation of a power supply: Techniques are disclosed to regulate a power supply with a compensation signal generation circuit. One example regulated power supply includes a sense circuit coupled to sense an output voltage of the regulated power supply. The regulated power supply also includes a switching power converter circuit, which includes a switch coupled... Agent: Blakely Sokoloff Taylor & Zafman

20080157740 - Hybrid low dropout voltage regulator circuit: A voltage regulator circuit includes a digital control block, an amplifier and a transistor. The digital control block receives a first reference voltage and a feedback voltage, converts the received voltages from analog to digital signals, performs an integration operation on the converted signals, and converts the result of the... Agent: Townsend And Townsend And Crew, LLP

20080157741 - Circuit to improve the load step of a nmos based voltage regulator: A voltage regulator includes a power field effect transistor and a control-loop circuit. The power field effect transistor has a threshold voltage, a drain terminal receiving an input voltage, a source terminal providing an output voltage and a load current, a gate terminal responsive to a control signal, and a... Agent: Maginot, Moore & Beck Chase Tower

20080157742 - Power supply and controller circuits: A power supply system includes multiple power converter phases. A controller (e.g., a processor device, ASIC) monitors an output voltage generated by a combination of multiple power converter phases that supply power to a load. Based on the monitoring, the controller determines: i) a magnitude of an error signal representing... Agent: Barry W. Chapin, Esq. Chapin Intellectual Property Law, Llc

20080157743 - Power supply and controller circuits: A power supply system delivers current to a load at a corresponding load voltage. The power supply system includes multiple power converter phases. Each power conversion phase comprises a phase switch and a phase inductor. In one embodiment, activation of a corresponding phase switch (e.g., a field effect transistor such... Agent: Barry W. Chapin, Esq. Chapin Intellectual Property Law, Llc

20080157744 - Voltage supply circuit, display device, electronic equipment, and voltage supply method: A voltage supply circuit including: first and second nodes; a predetermined potential; and an output transistor having its control terminal connected to the first node, its first terminal connected to the second node and its second terminal connected to an output terminal. The circuit further includes: a switching element which... Agent: Rader Fishman & Grauer Pllc

20080157745 - Circuit system, circuit unit, power supply unit, and power supply method: A circuit system comprising a power supply unit configured by a POL power source and a circuit unit of a low voltage/large current consumption for receiving supply of power from this power supply unit and able to respond to a sudden change of load of the circuit unit at a... Agent: Staas & Halsey LLP

20080157746 - Bandgap reference circuits: Bandgap reference circuits capable of preventing start failure. A voltage generation circuit generates a temperature-independent fixed voltage and comprises a current mirror, an operational amplifier, and first and second BJT transistors. A start-up circuit triggers the current mirror until at least one of the first and second BJT transistors operates... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20080157747 - Power dimmer: A circuit for controlling the power in a load supplied by an A.C. voltage and directly connected to a first terminal of application of the A.C. voltage, including two isolated-gate bipolar transistors, connected in anti-parallel between a second terminal of application of the A.C. voltage and the load; circuitry for... Agent: Stmicroelectronics Inc. C/o Wolf, Greenfield & Sacks, P.c.

20080157748 - Electric power flow control: An apparatus for controlling the power flow in a high voltage network. A phase shifting transformer includes a tap changer.... Agent: Venable LLP