Electricity: power supply or regulation systems inventions 11/08

20080290845 - Charge-transfer apparatus and method: An electronic device for transferring charge includes: a charge storage device; an inductive section; and a switching array having a first set of switches connected to a first node of a power terminal, a second set of switches connected to a second node, and a third set of switches connected... Agent: Princeton Power Systems, Inc. Cynthia Rosen

20080290846 - Switching power supply: A switching power supply capable of correcting a power factor without using a shunt resistor is provided. The switching power supply includes a rectifier for rectifying an AC power supply, boosting means including a power MOSFET for boosting an output of the rectifier, a smoothing capacitor for smoothing an output... Agent: Townsend And Townsend And Crew, LLP

20080290847 - Method 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... Agent: Eschweiler & Associates LLC

20080290850 - Switch control device, switch control method, and converter using the same: A switch control device, a switch control method, and a converter using the same are disclosed. The converter includes: a switch; an energy transfer element that converts input energy into output energy according to a switching operation of the switch; and a switch control device that generates a first signal,... Agent: Sidley Austin LLP

20080290849 - Voltage regulation system: A voltage regulation system is provided including detecting a feedback voltage less than a reference voltage; asserting a current source gate output by the feedback voltage less than the reference voltage; activating a gated current source by the current source gate output; and waiting a delay interval before negating the... Agent: Law Offices Of Mikio Ishimaru

20080290848 - Voltage regulator with managed gate-drive voltage: A system may include control of a voltage regulator to provide a regulated output voltage and output current to a load coupled to an output node of the voltage regulator, and changing of a gate-drive supply voltage provided to the voltage regulator based on the output current.... Agent: Buckley, Maschoff & Talwalkar LLC

20080290851 - Power supply: A power supply has a soft-start function capable of raising its output DC voltage without generating overshoot even when its load condition is set light at the start-up. The power supply comprises an error amplifier for outputting an error signal corresponding to the error between the output DC voltage and... Agent: Ratnerprestia

20080290852 - Power supply circuit and semiconductor memory: A power supply circuit that outputs a set voltage from an output terminal, has a boosting circuit that boosts a voltage supplied from a power supply and outputs the voltage to the output terminal; a voltage detecting circuit that outputs a first detecting signal when the voltage outputted from the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080290853 - Semiconductor element drive circuit: A drive circuit for driving a semiconductor element according to an input signal includes an output stage, a clamp circuit, a comparator, and a clamp control circuit. The output stage includes a series circuit of two transistors. A node between the transistors is coupled to a control terminal of the... Agent: Posz Law Group, PLC

20080290854 - Switching regulator having reverse current detector: A switching regulator includes first and second transistors, which are provided in series between power sources respectively having first and second potentials, and which convert a direct current voltage of a potential difference between the first and the second potentials into an alternating current voltage, and a control circuit. The... Agent: Mcginn Intellectual Property Law Group, PLLC

20080290855 - Battery powered intelligent variable power supply/battery charger: A battery-powered power supply system is disclosed that is fully compatible with PMU ASIC and USB power architectures as well as being backwards compatible with the non-PMU power architectures. A battery-powered power supply utilizes a battery source (e.g., two AA battery cells in series), in a circuit including a switching... Agent: Fox Rothschild LLP

20080284387 - Bidirectional no load control with overshoot protection: A method of operating an isolated bi-directional dc/dc converter to provide voltage regulation at a no-load condition over a wide voltage range and also provide overshoot protection for the boost mode main switching transistors uses new boost mode drive waveforms. The new waveforms drive switches S2 and S4 to be... Agent: General Motors Corporation Legal Staff

20080284388 - Methods 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... Agent: Texas Instruments Incorporated

20080284389 - Power supply apparatus: A power supply apparatus that supplies an operating voltage to a microcomputer reliably resets the microcomputer before operation becomes unstable when an external power supply voltage decreases due to interruption. A switching regulator and series regulators are included. An externally supplied power supply voltage is stepped down to generate an... Agent: Nixon & Vanderhye, PC

20080284390 - Dc-dc converter: A DC-DC converter includes a series circuit of a switch element Q1 and a switch element Q2 connected to a DC power source, a series circuit of a primary winding P1 of a transformer and a capacitor connected in parallel with one of the switch elements, a rectifying-smoothing circuit of... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080284391 - Fault protection circuit, method of operating a fault protection circuit and a voltage regulator employing the same: Embodiments of the present disclosure provide a fault protection circuit, a method of operating a fault protection circuit and a voltage regulator. In one embodiment, the fault protection circuit is for use with the voltage regulator and includes an output power section having first and second MOS transistors configured to... Agent: Texas Instruments Incorporated

20080284392 - Constant voltage power supply circuit and method of testing the same: A constant voltage power supply circuit is provided with a constant voltage circuit part to convert an input voltage into a predetermined constant voltage, a first excessive current protection circuit part to control the constant voltage circuit part so as to reduce the output voltage while maintaining an output current... Agent: Dickstein Shapiro LLP

20080284393 - Reduced noise low drop output arrangement: Implementations related to low drop output (LDO) circuit arrangements are presented herein.... Agent: Lee & Hayes, PLLC

20080284395 - Low dropout voltage regulator: Techniques pertaining designs of LDO voltage regulators are described. According to one design, the LDO voltage regulator comprises: a differential amplifier circuit having a pair of input terminals and an output terminal, one of the input terminals coupled to a predetermined reference voltage; an intermediate amplifier circuit having an output... Agent: Silicon Valley Patent Agency

20080284394 - Low dropout voltage regulator with improved voltage controlled current source: Techniques pertaining to designs of a compensation voltage controlled current source (VCCS) used in low dropout voltage regulators are disclosed. According to one aspect of the present invention, a compensation voltage controlled current source (VCCS) is so designed to meet the low input/output voltage requirements. Various features of the VCCS... Agent: Silicon Valley Patent Agency

20080284396 - Semiconductor device provided with feedback circuit including resistive element and capacitive element: The present invention provides a switching power supply circuit capable of stabilizing an output voltage as well as increasing a response speed of the output voltage by improving a phase margin of an open loop as a whole of the switching power supply circuit. The switching power supply circuit according... Agent: Mcdermott Will & Emery LLP

20080284398 - Controller having comp node voltage shift cancellation for improved discontinuous conduction mode (dcm) regulator performance and related methods: A modulation controller includes an error amplifier which receives a reference voltage and an output voltage (VOUT) from a switching regulator being controlled by the controller at its inputs and provides a VCOMP signal at its output, and at least one comparator, wherein a first input of the comparator is... Agent: Akerman Senterfitt

20080284397 - Digital voltage converter and control method thereof: In a digital boost or buck-boost converter, a pulse width modulation signal has an on-time and an off-time. A constant off-time period is provided to set the off-time to be constant, and an on-time period to determine the on-time is derived by monitoring the output voltage of the converter. With... Agent: Rosenberg, Klein & Lee

20080284399 - Methods and apparatus for controlling a digital power supply: Methods and apparatus for controlling a digital power supply are disclosed. An example method includes storing a first set of coefficients for controlling a digital power supply in a memory of the digital power supply, associating the first set of coefficients with a first set of characteristics of an input... Agent: Texas Instruments Incorporated

20080284401 - Methods and apparatus to control a digital power supply: Methods and apparatus to control a digital power supply are disclosed. An example method includes calculating a duty cycle of a pulse width modulated signal to control an output of a digital power supply, initializing an output of a counter that forms a pulse width modulator to increment by a... Agent: Texas Instruments Incorporated

20080284400 - Methods and apparatus to monitor a digital power supply: Methods and apparatus to monitor a digital power supply are disclosed. An example method includes receiving a voltage from a voltage source at a digital power supply, controlling the voltage using a power factor controller and a direct current (DC) to DC converter to generate an output voltage, controlling the... Agent: Texas Instruments Incorporated

20080284402 - Power supply unit and portable apparatus using the same: A power supply unit comprises a series regulator and a switching DC-DC converter controlled by a PWM signal and connected in parallel with the series regulator, which are switchably enabled by a mode instruction signal depending on the magnitude of a load current. In switching the series regulator and the... Agent: Hogan & Hartson L.L.P.

20080284403 - High-side current sense circuit with common-mode voltage reduction: A high-side current sense circuit comprises a sense resistance Rsense connected in series with a signal having an associated current to be measured I, which develops voltages V1 and V2 on either side of Rsense. A differential gain stage powered by supply voltages VCC and VEE produces an output voltage... Agent: Koppel, Patrick & Heybl

20080284404 - Semiconductor device having an integrated, self- regulated pwm current and power limiter and method: A method includes receiving an activation signal at a semiconductor device and generating an output power signal at the semiconductor device in response to receiving the activation signal. The output power signal has a duty cycle. The method also includes providing the output power signal to a load. The output... Agent: Stmicroelectronics, Inc.

20080284405 - Enhanced cascode performance by reduced impact ionization: The conventional cascode circuit can be improved by adding another transistor in series. The added transistor may use the body effect to reduce supply voltage variations across the cascode transistor as the supply voltage varies. The added transistor reduces impact ionization in the cascode transistor.... Agent: Steven Cahill/ National Semiconductor

20080284406 - Adaptive bias current generator methods and apparatus: In one aspect, a method of reducing power consumption in a circuit by adaptive bias current generation of a bias current configured to bias, at least in part, at least one amplifier of the circuit is provided. The method comprises establishing the bias current based, at least in part, on... Agent: Wolf Greenfield & Sacks, P.C.

20080284407 - Electronic circuit power supply device and electronic circuit: An electronic circuit power supply device configured to selectively apply at least one first voltage or one second voltage to a power supply terminal of the electronic circuit that includes elements for applying to the power supply terminal a voltage variable from a value equal to the first voltage to... Agent: Brinks Hofer Gilson & Lione

20080284408 - Sequential calibration of matched current sources: A system involves LED strings and programmable current source circuits (CSC). An LED current flows through each LED string. Each LED current is controlled by an associated programmable CSC. In one embodiment, the CSCs form a chain. A first CSC uses a reference current for calibration, and thereafter supplies the... Agent: Imperium Patent Works

20080278121 - Electrical energy transmission device: An electrical energy transmission device has phase conductors, which carry alternating current and have transfer impedance, and sheathed conductors, which are inductively coupled to the phase conductors. A first end and a second end of each sheathed conductor form a sheath circuit with a reactance. An electronic assembly for changing... Agent: Lerner Greenberg Stemer LLP

20080278122 - Apparatus and method for termination powered differential interface periphery: An apparatus and method for supplying power to the peripheral circuits of a transmitter circuit, especially an HDMI transmitter circuit, is disclosed. In an HDMI transmitter the termination resistors of the output driver are part of the receiver. DC power for the driver is supplied through these termination resistors. In... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080278123 - Switching regulator circuit, system, and method for providing input current measurement without a dedicated input current sense element: A synchronous regulator includes a controller coupled to receive a reference signal and a feedback signal from the regulator operable to provide a pulse width modulation (PWM) signal at its output. The regulator includes at least one gate driver coupled to receive the PWM signal, and a synchronous output switch... Agent: Graybeal, Jackson, Haley LLP

20080278124 - Method and circuit for generating output voltages from input voltage: A power supply circuit that accurately generates output voltages with the same regulator includes a regulator for generating a first output voltage from an input voltage. A first switch circuit, connected to the regulator, selectively outputs the first output voltage of the regulator as a second output voltage from the... Agent: Freescale Semiconductor, Inc. Law Department

20080278125 - Apparatus for optimizing diode conduction time during a deadtime interval: Deadtime optimization techniques and circuits are provided which implement closed loop feedback to reduce a duration of a deadtime interval by reducing a diode conduction time (DCT) to an optimized or minimized value. Information regarding DCT is fed back to continuously adjust the relative delay between a first driver path... Agent: Ingrassia Fisher & Lorenz, P.C. (fs)

20080278126 - Voltage down converter: A voltage down converter includes a voltage comparator for comparing a first reference voltage and an internal voltage to provide a first driving signal; a driving signal controller coupled with the voltage comparator, the driving signal controller configured to generate a second driving signal in response to an external voltage... Agent: Baker & Mckenzie LLP Patent Department

20080278127 - Constant-voltage power supply circuit with fold-back-type overcurrent protection circuit: A constant-voltage power supply circuit for converting an input voltage applied to an input terminal into a predetermined constant voltage for output from an output terminal includes an output transistor to supply from the input terminal to the output terminal an output current responsive to an applied control signal, an... Agent: Dickstein Shapiro LLP

20080278128 - Control circuit for step-down dc-dc converter, step-down dc-dc converter and control method thereof: To provide a control circuit of a step-down DC-DC converter, a step-down DC-DC converter and a control method thereof which can prevent overshoot and production of a through current flowing to a main switching transistor and a synchronous rectifier transistor by adopting a simple circuit configuration. The control circuit of... Agent: Arent Fox LLP

20080278130 - Resonance type electric power conversion apparatus and method: A resonance type electric power conversion apparatus which includes a main circuit including a main reactor, a main switching device, an inverse-parallel diode and an output power diode, and an auxiliary circuit including an auxiliary reactor, an auxiliary switch, and an auxiliary capacitor connected in parallel to the main switching... Agent: Arent Fox LLP

20080278131 - Switching mode power supply and driving method thereof: A switching mode power supply includes: a power supply unit that comprises a switch that is coupled to a primary coil at a primary side of a transformer for converting an input DC voltage, and that supplies power to a secondary coil and a tertiary coil at a secondary side... Agent: Sidley Austin LLP

20080278129 - Switching regulator capable of preventing reverse current: A switching regulator includes a first switch, an inductor, a second switch, a control circuit to control a switching operation by switching the first switch and switching the second switch complementally to the first switch, a reverse current protection circuit to shut off a current through the second switch to... Agent: Dickstein Shapiro LLP

20080278132 - Digital compensation for cable drop in a primary side control power supply controller: The present invention is a system and a method that uses primary side sensing to regulate the output voltage at a cable end without any remote sensing of cable connections back from the load. This is accomplished by approximating the current from the control voltage in the control loop through... Agent: Fenwick & West LLP

20080278133 - Irregular voltage detection and cutoff circuit using bandgap reference voltage generation circuit: An irregular voltage detection and cutoff circuit using a bandgap reference voltage generation circuit includes the bandgap reference voltage generation circuit, which generates a bandgap reference voltage from the power-supply voltage, a reference voltage generator, which generates a first reference voltage and a second reference voltage in the same voltage... Agent: F. Chau & Associates, LLC

20080278134 - Switching power supply device: The present invention provides a switching power supply device including a switching element, a control circuit controlling the switching element, a transformer having an auxiliary winding, a potential clamp circuit connected to one of outputs of the transformer, a delay capacitor connected to an output of the potential clamp circuit,... Agent: Ratnerprestia

20080278135 - Bootstrap clamping circuit for dc/dc regulators and method thereof: A clamping circuit of a DC/DC regulator includes a reference current generator to generate a reference current. The reference current can be based upon a specified maximum voltage across a bootstrap capacitor of the DC/DC regulator. The clamping circuit also includes a current generator that generates a current based on... Agent: Larson Newman Abel Polansky & White, LLP

20080278136 - Power supplies for rf power amplifier: Switched-mode power supplies (SMPSs) and their control methods for radio frequency (RF) power amplifiers in battery-powered wireless transmitter devices involve a Boost-type SMPS and a Buck-type SMPS in cascade connection which are controlled so that high efficiency is maintained for various loads and transmission power levels. The Boost SMPS and... Agent: Hollingsworth & Funk, LLC

20080278137 - Circuits and methods to produce a vptat and/or a bandgap voltage: Provided herein are circuits and methods to generate a voltage proportional to absolute temperature (VPTAT) and/or a bandgap voltage output (VGO). A circuit includes a group of X transistors. A first subgroup of the X transistors are used to produce a first base-emitter voltage (VBE1). A second subgroup of the... Agent: Fliesler Meyer LLP

20080278138 - High accuracy constant-off average output current control scheme: A high accuracy constant-off average output current control is provided. It is composed of the reference block generates preset reference and converts the reference signal into a suitable format; the state detecting block, the state variables of switching power converter are detected and the detected signals are converted into the... Agent: Qi Cui Wei

20080278139 - Sleep current adjusting circuit of system on chip: There is provided a sleep current adjusting circuit of a system on chip including: a regulator supplying a turn-on voltage and a normal current when a mode selection signal is a normal mode signal, and a turn-off voltage when the mode selection signal is a sleep mode signal; a switching... Agent: Lowe Hauptman Ham & Berner, LLP

20080272744 - Power control system using a nonlinear delta-sigma modulator with nonlinear power conversion process modeling: A power control system includes a switching power converter and a power factor correction (PFC) and output voltage controller. The switching power converter utilizes a nonlinear energy transfer process to provide power to a load. The PFC and output voltage controller generates a control signal to control power factor correction... Agent: Hamilton & Terrile, LLP

20080272745 - Power factor correction controller with feedback reduction: A power control system includes a feedback loop having a power factor correction (PFC) and output voltage controller and a switching power converter. The switching power converter includes an inductor to supply charge to an output capacitor and a switch to control inductor current ramp-up times. The PFC and output... Agent: Hamilton & Terrile, LLP

20080272746 - Power factor correction controller with switch node feedback: A power control system includes a switching power converter and a power factor correction (PFC) and output voltage controller. The PFC and output voltage controller provides a control signal to a switch to control power factor correction and regulate output voltage of the switching power converter. During a single period... Agent: Hamilton & Terrile, LLP

20080272747 - Programmable power control system: A power control system includes a switching power converter and a programmable power factor correction (PFC) and output voltage controller. The programmable PFC and output voltage controller generates a control signal to control power factor correction and voltage regulation of the switching power converter. In at least one embodiment, the... Agent: Hamilton & Terrile, LLP

20080272748 - Power factor correction (pfc) controller and method using a finite state machine to adjust the duty cycle of a pwm control signal: A power factor correction (PFC) controller and method uses a finite state machine to adjust the duty cycle of a pulse width modulation (PWM) switching control signal. The PFC controller has a target current generator that receives the link output voltage and generates a target current proportionate to the rectified... Agent: Cirrus Logic, Inc. Cirrus Logic Legal Department

20080272749 - High frequency device, power supply device and communication apparatus: p

20080272750 - Device: A device includes an output and a linear regulator coupled to the output. The device also includes a switching regulator coupled to the output and means for controlling said switching regulator in dependence on power loss in said linear regulator.... Agent: Squire, Sanders & Dempsey L.L.P.

20080272751 - Parameter control circuit and method therefor: In one embodiment, a single input terminal of a parameter control circuit is utilized to form two different parameters of the parameter control circuit.... Agent: Mr. Jerry Chruma Semiconductor Components Industries, L.L.C.

20080272752 - Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators: A multiphase regulator which includes an output node developing an output voltage, a feedback circuit determining error of the output voltage and providing a compensation signal indicative thereof, at least three phase circuits coupled in parallel to the output node, and an adaptive controller. Each phase circuit includes a modulation... Agent: Law Offices Of Gary R. Stanford

20080272753 - Regulator circuit: A stabilized regulator circuit is provided A first Pch transistor (PTr) (P1) whose source is connected to a power supply line and whose drain is connected to an output terminal that outputs a load current, a PTr (P2) whose source and gate are respectively connected to the source and gate... Agent: Young & Thompson

20080272754 - Constant voltage power supply circuit and method of controlling the same: A constant-voltage power supply circuit is disclosed that is able to prevent overshoot of an output voltage possibly occurring when changing a constant-voltage circuit in operation and is able to supply a constant output voltage. The constant-voltage power supply circuit includes a first constant-voltage circuit, having a first output transistor... Agent: Dickstein Shapiro LLP

20080272756 - Power factor correction controller with digital fir filter output voltage sampling: A power control system includes a digital FIR filter in an output voltage feedback loop of a switching power converter. A feedback loop includes an output voltage signal of the switching power converter. The output voltage signal includes direct current (DC) and alternating current (AC) components. The FIR filter provides... Agent: Hamilton & Terrile, LLP

20080272757 - Power supply dc voltage offset detector: A power supply output voltage direct current (DC) offset detector determines a DC offset in a power supply output voltage signal, and the output voltage signal has a DC component and an alternating current (AC) “ripple” component. Once during each period of the ripple, the DC offset detector determines the... Agent: Hamilton & Terrile, LLP

20080272755 - System and method with inductor flyback detection using switch gate charge characteristic detection: A method and system monitor gate charge characteristics of one or more field effect transistors in a switching power converter to detect an end of an inductor flyback time interval. The switching power converter includes a switch coupled to an inductor to control current flow in the inductor. When the... Agent: Hamilton & Terrile, LLP

20080272759 - Dc converter with halt mode setting means: A DC converter with a halt mode setting is disclosed for preventing the occurrence of over-current while alleviating the increase in the size of circuits, along with a method for setting up such a halt mode. The DC converter includes a semiconductor switch, a clock generator for outputting a clock... Agent: Dickstein Shapiro LLP

20080272758 - Switching power converter with switch control pulse width variability at low power demand levels: A power control system includes a switch mode controller to control the switching mode of a switching power converter. The switch mode controller generates a switch control signal that controls conductivity of a switch of the switching power converter. Controlling conductivity of the switch controls the switch mode of the... Agent: Hamilton & Terrile, LLP

20080272760 - Rechargeable battery for connection to a load: The invention relates to a rechargeable battery for connection to a load, in particular for supplying a manually operated electric tool device with electrical energy, comprising a rechargeable-battery housing (28) and rechargeable-battery cells (10) arranged therein and an electronics unit (16), wherein the electronics unit (16) comprises a unit for... Agent: Norris, Mclaughlin & Marcus