Electricity: power supply or regulation systems inventions 07/09

20090189573 - Method for regulating a voltage and circuit therefor: A voltage regulator having an overload protection circuit and a method for protecting against an output voltage being less than a predetermined level. The voltage regulator has an overload protection circuit coupled between a feedback network and a regulation section. A power factor correction circuit is connected to the regulation... Agent: Semiconductor Components Industries, LLC Intellectual Property Dept. - A700

20090189574 - Simplified maximum power point control utilizing the pv array voltage at the maximum power point: A converter system adapted to be connected between a photovoltaic power source and a load comprises a converter circuit, a control circuit, and a PWM generator circuit. The converter circuit is operatively connected to transfer energy from the photovoltaic power source to the load. The control circuit generates a... Agent: Schacht Law Office, Inc.

20090189575 - Method for measuring an alternating current which is generated using inverters, and arrangement for carrying out the method: There is described a method for measuring an alternating current which is generated using inverters and is fed into an AC power system, wherein a zero crossing signal of the AC power system is predefined, and wherein, triggered by the zero crossing signal, the measured alternating current is periodically adjusted... Agent: Siemens Corporation Intellectual Property Department

20090189576 - Voltage regulator with communication ring scheme: A voltage regulator coupled to an unregulated DC input voltage source by an input terminal, and to a load by an output terminal is disclosed. The voltage regulator converts an input voltage at the input terminal to an output voltage at the output terminal. The voltage regulator includes a master... Agent: Fish & Richardson P.C.

20090189577 - Linear regulator and voltage regulation method: The present invention discloses a linear regulator and a voltage regulation method. The method comprises: providing a power transistor for converting a supply voltage to an output voltage to a load according to the conduction condition of the power transistor; controlling the conduction condition of the power transistor according to... Agent: Tung & Associates / Randy W. Tung, Esq.

20090189581 - Apparatus and method for recycling the energy from load capacitance: The present invention provides a voltage regulator/power converter capable of bidirectional power propagation, fitted with controls capable of raising and lowering voltages with unprecedented speed and accuracy. The bidirectional capability allows energy stored in capacitors to be returned to system power sources. In one embodiment of the invention power is... Agent: Rudoler & Derosa LLC Attn: Docket Clerk

20090189580 - Drive control apparatus for controlling drive of inductive load and drive control method for controlling the same: A drive control apparatus controls a drive of an inductive load having a current flowing therethrough. The drive control apparatus includes a drive control device for controlling a variation of the current flowing through the inductive load within a certain period by Pulse Width Modulation control so as to come... Agent: Kanesaka Berner And Partners LLP

20090189578 - Low ripple dc to dc power converter: A low ripple DC to DC power converter comprises a first switch, a second switch, an inductor, a driving circuit, and an oscillating circuit. The driving circuit is used to control the first switch and the second switch based on a driving signal. The driving signal has a duty cycle.... Agent: North America Intellectual Property Corporation

20090189579 - Switch state controller with a sense current generated operating voltage: A power supply system and method includes a switch state controller that is operational to control a switching power converter during certain power loss conditions that cause conventional switch state controllers to have diminished or no functionality. In at least one embodiment, during certain power loss conditions, such as when... Agent: Hamilton & Terrile, LLP

20090189582 - Switching power supply device and electrical apparatus using the same: The present invention provides a switching power supply device capable of automatically restarting an electrical apparatus without a user operation when a voltage of the electrical apparatus or an operation of the electrical apparatus is abnormal. The switching power supply device is provided with a short-circuiting switch for a shunt... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090189583 - Switching power supply with switching circuits: A switching power supply has first and second switching units and a control unit. Each switching unit has a switching element performing a switching operation to intermittently receive electric current from a battery while accumulating electric power in a coil and discharging this power to an output terminal. A resistor... Agent: Nixon & Vanderhye, PC

20090189584 - Voltage regulator: Provided is a voltage regulator capable of reducing fluctuation of an output current even when an output terminal thereof is short-circuited. In a case where the output terminal of the voltage regulator is short-circuited, an output current (Iout) of the voltage regulator is limited and fixed to a limit current... Agent: Brinks Hofer Gilson & Lione/seiko Instruments Inc.

20090189585 - Pulse width modulation controller and the controlling method thereof: A PWM controller for controlling a switching voltage regulator comprises a first comparator, a second comparator and a third comparator. The first comparator is configured to detect voltages of a first node and a second node so as to determine whether to stop the PWM controller. The PWM controller is... Agent: Wpat, PC Intellectual Property Attorneys

20090189586 - Switched-capacitor soft-start ramp circuits: Methods and apparatus for a switched-capacitor soft-start ramp generator circuit are described. In an example, an apparatus to provide a soft-start voltage is described, comprising a first capacitor, a feedback circuit to increase a reference voltage based on an output voltage, a second capacitor, having a capacitance value greater than... Agent: Texas Instruments Incorporated

20090189587 - High accuracy average output current control scheme for power current converter in critical dcm: t

20090189588 - Power supply circuit having resistance element changing its resistance value to limit current flowing to capacitive load: A power supply circuit includes a control circuit which outputs a control signal when an in-rush current flows and a power-supply-resistance control circuit which supplies a current to a capacitive load. The power-supply-resistance control circuit, provided in the current path between a power supply and the capacitive load, increases the... Agent: Mcginn Intellectual Property Law Group, PLLC

20090189589 - Method of regulating an ac signal: A switching regulator and method of regulating an ac input signal to provide an ac output signal, receiving the ac input signal, generating a reference signal, detecting the points when the ac input signal is zero and synchronising the reference signal to these points, performing a subtraction between the reference... Agent: Ballard Spahr Andrews & Ingersoll, LLP

20090189590 - Band-gap reference voltage source circuit: A band-gap reference voltage source circuit is constituted of a diode-pair circuit connected to a reference voltage output terminal, a first differential amplifier including a first transistor and a first operational amplifier, and a second differential amplifier including a second transistor and a second operational amplifier. The second differential amplifier... Agent: Foley And Lardner LLP Suite 500

20090189591 - Power supply insensitive ptat voltage generator: In temperature sensing circuitry PTAT (Proportional to Absolute Temperature) Voltage References are typically used. By adding a feedback circuit and a source follower into the classic design, the circuit can guarantee that the current is mirrored identically regardless of the value of power supply voltage. This added circuitry is easy... Agent: International Business Machines Corporation Richard Lau

20090184694 - Flicker improvement effect evaluating system: A flicker improvement effect evaluating system evaluates an effect of improvement of voltage flicker in a power system to which a static reactive power compensator is to be introduced. A system voltage operating unit operates a compensation current and a system impedance of the power system, based on actually measured... Agent: Buchanan, Ingersoll & Rooney PC

20090184695 - Method and system for rms computation on digitized samples: A system and method for computing a Root Mean Square (RMS) value of digitized samples is disclosed. Discrete digital representations of a continuous analog electrical signal are produced. The discrete digital representations are received by a digital computation module, wherein the digital computation module is configured to perform a division... Agent: Knobbe Martens Olson & Bear LLP

20090184696 - Voltage source for gate oxide protection: An electronic circuit. The electronic circuit includes a first circuit leg coupled to a first supply voltage node and a second supply voltage node. The first circuit leg includes a first reference current circuit configured to produce a first reference current and a second reference current circuit configured to produce... Agent: Meyertons, Hood, Kivlin, Kowert & Goetzel (amd)

20090184697 - System, apparatus, and method for selectable voltage regulation: Apparatuses, systems, and methods are disclosed for generating, regulating, and modifying various voltage levels on a semiconductor device using a current mirroring digital-to-analog voltage regulator. The voltage regulator operates by mirroring a reference current onto a selectable current level and controlling the selectable current level with a digital input to... Agent: Trask Britt, P.C./ Micron Technology

20090184700 - Electronic control system and power supply unit of the system: A power supply unit for supplying electric current of a supply voltage to a control unit in an electronic control system has switching regulator dropping an input voltage to an intermediate voltage, a first series regulator producing electric current of the supply voltage from the intermediate voltage, and a second... Agent: Nixon & Vanderhye, PC

20090184699 - Power supply apparatus and power supply method: A power supply apparatus is described that includes a first switch, a second switch, a first comparator, a signal generator and a controller. The first switch is provided between an inductor and a terminal having a reference voltage. The second switch is provided between the inductor and an output terminal.... Agent: Fujitsu Patent Center C/o Cpa Global

20090184698 - Switching power supply: A switching power supply exhibits high conversion efficiency and facilitates reducing the size thereof. The switching power supply includes a half-bridge circuit including a first series circuit formed of switching devices Q1 and Q2 and connected between the output terminals of a DC power supply; and a second series circuit... Agent: Kanesaka Berner And Partners LLP

20090184701 - Switching voltage regulator, control circuit and method thereof: A control circuit comprises a PWM control circuit and a PWM skip control circuit. The PWM control circuit controls a switching circuit. The switching circuit acts as a current source for an output circuit and a load circuit. The PWM skip control circuit controls the operation of the PWM control... Agent: Wpat, PC Intellectual Property Attorneys

20090184702 - Voltage regulator with self-adaptive loop: A voltage regulator includes an amplifier and a regulation loop. The regulator includes a first PMOS transistor connected to a terminal supplying an input voltage, a second PMOS transistor connected in series with the first PMOS transistor. A node between those two transistors defines an output terminal. A first source... Agent: Gardere Wynne Sewell LLP Intellectual Property Section

20090184703 - Voltage compensator for dual-secondary voltage transformers: An compensated voltage transformer includes a voltage transformer. The voltage transformer includes a primary winding that receives a supply voltage, a meter winding that generates a first voltage based on a first turns ratio between the primary winding and the meter winding, and a power winding that generates a second... Agent: Harness, Dickey & Pierce, P.L.C

20090179619 - Voltage regulator system and method for efficiency optimization using duty cycle measurements: A method and system control the adding or dropping of phases in a multiphase voltage regulator. The regulator has an efficiency and this efficiency of the regulator is calculated for a given number of phases being activated from an output voltage, input voltage, output current, and duty cycle of the... Agent: Graybeal Jackson LLP

20090179620 - Switching power supply device and semiconductor integrated circuit: The present invention provides a switching power source and a semiconductor integrated circuit which realize an acquisition a sufficient driving voltage of a high-potential side switching element M1 even when a power source voltage VDD is low. In a switching power source which controls a current which flows in an... Agent: Miles & Stockbridge PC

20090179621 - Overcurrent detection circuit: A circuit for detecting overcurrent flowing to an output transistor. A replica transistor generates a reference voltage that is in accordance with a reference current flowing from a constant current circuit. A voltage-current conversion circuit generates a determination reference current proportional to the reference current based on the reference voltage.... Agent: Freescale Semiconductor, Inc. Law Department

20090179622 - Low drop voltage regulator with instant load regulation and method: An LDO regulator (10) produces an output voltage (Vout) by applying the output voltage to a feedback input (6) of a differential input stage (10A) and applying an output (3) of the differential input stage to a gate of a first follower transistor (MP4) having a source coupled to an... Agent: Texas Instruments Incorporated

20090179623 - Method of controlling dc/dc converter apparatus: If a lower arm device connection period is non-zero in a previous switching cycle, a first dead time is prohibited from decreasing, and if the lower arm device connection period is zero, the first dead time is allowed to decrease, wherein the first dead time is the dead time provided... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090179624 - Rv converter with current mode and voltage mode switching: A switched mode converter is disclosed that includes both voltage mode and current mode control. The switched mode converter also includes mode logic for switching between a voltage mode and a current mode. The converter includes current sensing circuitry for sensing the switcher current on the primary side of the... Agent: Katten Muchin Rosenman LLP (c/o Patent Administrator)

20090179625 - Voltage converter: An exemplary voltage converter includes a pulse width modulation controller chip, a pull-up transistor, a pull-down transistor, and a low pass filter. The pulse width modulation controller chip includes a plurality of pins, a power management circuit, a gate control logic circuit, a first gate driver, a second gate driver,... Agent: PCe Industry, Inc. Att. Steven Reiss

20090179626 - Characterization of ac mains circuit parameters: Methods, devices, and systems implementing AC mains circuit parameter characterization are provided. One example embodiment of an image forming device includes a variable electrical load, and a controller adapted to vary the electrical load based on a characterization of AC mains circuit parameters including source voltage and line impedance wherein... Agent: Hewlett Packard Company

20090179627 - On-vehicle electric power source system: In an on-vehicle electric power source system, a power source control device is configured to supply an electric power from an electric power supply source to an actuator by means of a dual-circuit power supply line. The dual-circuit power supply line includes a bypass line and a charge-up line arranged... Agent: Foley And Lardner LLP Suite 500

20090174373 - Clamp circuit and combinational circuit thereof: A clamp circuit comprises a first transistor, a second transistor and a voltage-dividing circuit. The first transistor has a source terminal connected to a reference voltage, and has a drain terminal grounded through a current source. The second transistor has a gate terminal connected to the gate and drain terminals... Agent: Wpat, PC Intellectual Property Attorneys

20090174374 - Dynamic multiphase operation: An output regulator includes a plurality of switch arrays. A controller enables selected ones of the plurality of switch arrays in response to a sense signal. The sense signal is based on an output of the output regulator. The controller generates drive signals to control the selected ones of the... Agent: Harness, Dickey & Pierce P.L.C

20090174375 - Sepic fed buck converter: A Single Ended Primary Inductance Converter (SEPIC) fed BUCK converter includes: a first switch configured to open or close according to a first signal; a SEPIC portion coupled to the first switch and coupled to an energy source, the SEPIC portion comprising a first set of one or more passive... Agent: Van Pelt, Yi & James LLP

20090174376 - Dc-dc converter: A Single Ended Primary Inductance Converter (SEPIC) fed BUCK converter includes: a first switch configured to open or close according to a first signal; a SEPIC portion coupled to the first switch and coupled to an energy source, the SEPIC portion comprising a first set of one or more passive... Agent: Van Pelt, Yi & James LLP

20090174377 - Multiphase transformer for a multiphase dc-dc converter: A multiphase DC-DC converter is provided that includes a multiphase transformer, the multiphase transformer including a plurality of input voltage terminals and an transformer output voltage terminal, each input voltage terminal associated with a corresponding phase. Each phase is assigned to an input voltage terminal of the plurality of input... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090174378 - Hybrid filter for high slew rate output current application: An active linear regulator circuit in parallel with a filter capacitor of a switching voltage regulator injects current to a load only when the switching regulator and capacitor cannot supply adequate current to follow high frequency load transients in a manner which is compatible with adaptive voltage positioning (AVP) requirements.... Agent: Whitham, Curtis & Christofferson & Cook, P.C.

20090174381 - Controller for a power supply: A controller for controlling a load output. In various embodiments, the controller may include a closed loop. In some embodiments, the closed loop may have a least one controllable characteristic. In one embodiment, the controller may be configured to control the at least one controllable characteristic in response to changes... Agent: Brake Hughes Bellermann LLP

20090174379 - Dc-dc converter: A dual-mode switching voltage regulator has a duty cycle that varies with the input and output voltages so as to dynamically compensate for changes in the operating conditions. The switching voltage regulator uses input and output voltages/currents to optimize the duty cycle of the signals applied to a pair of... Agent: Townsend And Townsend And Crew, LLP

20090174380 - Fixed frequency ripple regulator: A ripple regulator for providing a pulse width modulation (PWM) signal for regulating an output voltage of a power converter switching stage. The regulator including a ripple circuit for providing a ripple voltage; a comparison circuit for comparing the ripple voltage to an output of an error amplifier; and a... Agent: Ostrolenk Faber Gerb & Soffen

20090174383 - Frequency compensation based on dual signal paths for voltage-mode switching regulators: A frequency compensation method for voltage-mode switching regulators is disclosed. A lowpass filter and a bandpass filter are employed in the two signal paths into the dual inputs of PWM comparators. In one embodiment, two zeros are generated to compensate for the L-C output filter poles. Stable operation, low output... Agent: Leydig Voit & Mayer, Ltd

20090174382 - Method and apparatus to remove energy from dc loads: A DC output power converter or DC switch device that includes methods and apparatus to reverse the current in the connected load, thereby draining the load's energy until the voltage in the load is brought to a (near) zero potential and held there.... Agent: Brown & Michaels, PC 400 M & T Bank Building

20090174384 - Switching regulator and method of controlling the same: A disclosed switching regulator converts an input voltage to an output voltage of a predetermined level and outputs the output voltage. The disclosed switching regulator includes a switching transistor configured to be turned on and off according to a control signal; an inductor configured to be charged by the input... Agent: Dickstein Shapiro LLP

20090174385 - Integrated soft start circuits: Various circuits, including DC/DC converters can include an integrated soft-start circuit. The integrated soft-start circuit includes a PMOS transistor configured to receive a reference signal and control the current to a bipolar junction transistor when the reference signal is in a first state. First and second NMOS transistors are included... Agent: Sidley Austin LLP

20090174386 - Power supply start-up and brown-out inrush management circuit: A power supply device including a diode bridge, a converter module, and an inrush control module. The diode bridge is adapted to rectify an input voltage. The converter module is coupled to the diode bridge and is adapted to convert the input voltage into a direct current regulated output voltage.... Agent: Larson Newman Abel & Polansky, LLP

20090174388 - Dual power switch and voltage regulator using same: The present invention discloses a dual power switch and a voltage regulator using the dual power switch. The dual power switch comprises a PMOS power switch and an NMOS power switch connected in parallel and operating according to corresponding predetermined conditions, respectively.... Agent: Tung & Associates / Randy W. Tung, Esq.

20090174387 - Semiconductor device: A disclosed semiconductor device includes a first power terminal to which a high voltage is applied; a clamping circuit electrically connected to the first power terminal; and an internal circuit electrically connected to the clamping circuit and driven by a voltage lower than the high voltage. The clamping circuit includes... Agent: Ipusa, P.l.l.c

20090174389 - Multi-phase power supply controller and method therefor: In one embodiment, a multi-phase power supply controller is configured to an operating status signal and responsively inhibit the PWM controller from forming at least one PWM drive signal of a plurality of PWM drive signals.... Agent: Semiconductor Components Industries, LLC Intellectual Property Dept. - A700

20090167259 - Dc-dc converter, dc-dc converter control method, and electronic device: The DC-DC converter includes a control unit that controls a current stored in an inductance and an output voltage output from an output terminal electrically couplable to the inductance. The control unit assigns a first period and a second period to a given period when the output voltage is lower... Agent: Arent Fox LLP

20090167260 - Electrical power supply arrangement and use thereof: A power supply arrangement is specified in which a capacitor with a low internal resistance, in particular a supercap (3), is connected via a means for charging (4) to an input (1) and via a load current regulator (9) to a connecting means (7) for an electrical load (8). Together... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090167261 - Current measuring device: An embodiment of a current measuring device, defined by a gain, including an amplification module including an input for receiving a control signal, an input connected to an output node, brought to an output potential and traversed by an output current, a feedback node traversed by a mirror current associated... Agent: Graybeal Jackson LLP

20090167262 - power converter: A power converter (1) comprises a voltage level increasing circuit (3) which receives a DC-input voltage (VIN) between first and second power converter inputs (IN1, IN2), and which has an output (O1; O2, O3) to supply an adapted input voltage having either a higher level than the input voltage (VIN)... Agent: Docket Clerk

20090167263 - Current limiting circuit and voltage regulator using the same: Techniques pertaining to a voltage regulator with a current limiting circuit having low quiescent current are disclosed. According to one aspect of the present invention, a current limiting circuit is provided for limiting a current passing through an output pass circuit of a voltage regulator, the current limiting circuit comprises:... Agent: Silicon Valley Patent Agency

20090167264 - Dc-dc converter usable for dual voltage supply: A converter has a single inductor with a first terminal connectable to a first terminal of the supply input through a first power transistor and a second terminal connectable to a second terminal of the supply input through a second power transistor. A first rectifier element connects the first terminal... Agent: Texas Instruments Incorporated

20090167265 - Current zero crossing detector in a dimmer circuit: A method and circuit for controlling the delivery of power having a current component to a load having an inductive component, the method comprising selectively switching power to the load with a switch, wherein the switch is caused to operate at the threshold of saturation during a conduction state such... Agent: Greenblum & Bernstein, P.L.C

20090167266 - 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

20090167269 - Bi-directional dc power circuit: Bi-directional direct current (DC) power circuit having: a signal processing module for processing feedbacks of output voltage and voltage drop, and outputting pulse control and directional control signals; a pulse width modulation (PWM) module for outputting pulse signals in response to the control signals from the signal processing module; and... Agent: Greenberg Traurig, LLP (sv)IPDocketing

20090167267 - Power converter with monotonic turn-on for pre-charged output capacitor: A power converter for and method of producing a monotonic rise in output voltage at start-up. In one embodiment, the power converter includes a switch and an error amplifier coupled to an output terminal of the power converter. The power converter also includes a comparator with an output terminal coupled... Agent: Slater & Matsil, L.L.P.

20090167268 - Power supply: A switching regulator for regulating an ac signal, and method of supplying power thereto are provided. The regulator includes a positive half cycle part and a negative half-cycle part arranged to regulate the respective parts of an input ac signal. Each half-cycle part comprises a modulating transistor, having an associated... Agent: Ballard Spahr Andrews & Ingersoll, LLP

20090167271 - Active transient response circuits, system and method for digital multiphase pulse width modulated regulators: Disclosed is a multi-phase pulse width modulated voltage regulator and method in which transient voltage excursions or deviations that exceed the load line voltage by more than a predetermined amount are detected by an ATR circuit and a correction signal is applied. The correction signal is in the form of... Agent: The Noblitt Group, PLLC

20090167270 - Supply voltage control based at least in part on power state of integrated circuit: For one disclosed embodiment, switching voltage regulator circuitry may be controlled to supply a voltage to at least a portion of an integrated circuit. Information corresponding to a current load for a different power state of at least a portion of the integrated circuit may be received. The switching voltage... Agent: Intel/bstz Blakely Sokoloff Taylor & Zafman LLP

20090167272 - Power supply controller: A first current corresponding to the drain-to-source voltage of a power MOSFET can pass through an FET; and a second current corresponding to a constant voltage can pass through an FET; a third current corresponding to the difference determined by subtracting the first current from the second current can pass... Agent: Oliff & Berridge, PLC

20090167274 - Pwm controller and the chip thereof: A PWM controller applied to a switching voltage regulator comprises a disabling circuit, a power-sensing circuit, an over-current protection circuit and a PWM logic circuit. The disabling circuit is connected to an external frequency compensation circuit for detecting a voltage used to stop the operation of the PWM controller. The... Agent: Wpat, PC Intellectual Property Attorneys

20090167273 - Voltage converter: An exemplary voltage converter includes a pulse width modulation controller chip, an enabling transistor, a first resistor, a pull-up transistor, a pull-down transistor, and a low pass filter. The pulse width modulation controller chip includes a plurality of pins, a gate control logic circuit, an enabling comparator, a first gate... Agent: PCe Industry, Inc. Att. Steven Reiss

20090167275 - Voltage regulator feedback protection method and apparatus: An integrated circuit includes an output terminal. A plurality of feedback terminals receives a feedback signal. A voltage regulator has a feedback input in communication with the plurality of feedback terminals to receive the feedback signal. The voltage regulator has a power output in communication with the output terminal. The... Agent: Harness, Dickey & Pierce P.L.C

20090167276 - Soft-start circuit and method thereof: A soft-start circuit and a method thereof are described. The circuit includes an amplifier and a voltage ramp generator. The amplifier has a first input end, a second input end, an output end, and a power source control end. The first input end is coupled to a reference voltage. The... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20090167277 - Common-mode voltage generator for a battery-supplied handset apparatus: A common-mode voltage generator for a battery-supplied apparatus is provided with a battery voltage ripple-insensitive sensor comprising a voltage dividing circuit and a number of hysteresis comparators, by means of which a battery voltage, or a fraction thereof is compared with a series of reference voltages. These reference voltages are... Agent: Nxp, B.v. Nxp Intellectual Property Department

20090167278 - Power supply with separate line regulation and load regulation: A system to supply power to an electronic system, comprises a set of one or more power units each configured to transform an input voltage into an output voltage; and a line regulator coupled to a power unit and configured to modulate a duty cycle of the power unit and... Agent: Intel/bstz Blakely Sokoloff Taylor & Zafman LLP

20090167279 - Dc power converter and mode-switching method: A DC converter and a mode-switching method used in an electronic apparatus are included. The electronic apparatus includes a subsystem circuit. The DC power converter comprises a first voltage converting circuit electrically connected to the subsystem circuit, receiving a system voltage and a first reference voltage, and converting the system... Agent: Wpat, PC

20090167281 - Bandgap refernce voltage generating circuit: A bandgap reference voltage generating circuit, includes: at least two bipolar transistors; an operational amplifier; a first PMOS transistor; and a second PMOS transistor whose source is connected to the upper limit power supply voltage and which supplies the reference current to the bipolar transistors. Further, the bandgap reference voltage... Agent: Sherr & Vaughn, PLLC

20090167280 - Voltage generating circuit: A voltage generating circuit for generating a plurality of associated voltages includes a constant current source for generating a constant current; a plurality of resistors connected in series to the constant current source in series for generating a plurality of associated reference voltages; and a first controlled switch connected to... Agent: Wpat, PC

20090167282 - Voltage regulator and method of calibrating the same: A voltage regulator is provided that includes a power cell to provide a calibrated output voltage based on a voltage identification (VID) offset, and a master controller to provide a VID code to the power cell. The power cell to calibrate the output voltage based on the VID code received... Agent: Ked & Associates, LLP Intel Corporation

20090167283 - Circuit for multiplexing digital and analog information via single pin of driver for switched mosfets of dc-dc converter: Multiple characteristics of a DC-DC converter, such as its mode of operation (e.g., either forced continuous conduction mode, or discontinuous conduction mode), and an operational parameter (such as the dead-time between switching times of the output switching devices (upper and lower MOSFETs) of the converter, whose associated driver integrated circuit... Agent: Fogg & Powers LLC

20090167284 - Multi-magnetic device: In some embodiments an inductor is external to a tightly coupled transformer. The inductor is coupled in series with at least one input of the tightly coupled transformer, and the inductor does not rely on any leakage inductances of the tightly coupled transformer. The tightly coupled transformer and the inductor... Agent: Intel Corporation C/o Cpa Global

20090167285 - Resonance circuit for use in h-bridge dc-dc converter: The present invention discloses a resonance circuit for use in an H-bridge DC-DC converter, the resonance circuit comprising: an H-bridge converter, capable of converting unstable DC power into stable DC power; a first resonance circuit, disposed on a buck side of the H-bridge converter for reducing the turn-off loss of... Agent: Wpat, PC