Electricity: power supply or regulation systems inventions 11/07

20070273338 - Transformerless utility-grid-interactive inverter: An electrical DC-to-AC power conversion apparatus is disclosed that is primarily intended for use with solar photovoltaic sources in electric utility grid-interactive applications. The invention improves the conversion efficiency and lowers the cost of DC-to-AC inverters. The enabling technology is a novel inverter circuit topology, where the bulk of the... Agent: Thelen Reid Brown Raysman & Steiner LLP

20070273337 - Method of operating a dc/dc up/down converter: A method for an up-down converter which is based on a buck converter during the current down-conversion phase (Φ2, Φ3 and Φ5, Φ6, respectively) of the coil (L1) supplies an output (B) with a relatively high output voltage (UB), where UB>Uin. The down-conversion phase of the coil current (IL1) comprises... Agent: Nxp, B.v. Nxp Intellectual Property Department

20070273339 - Arc quenching device for a solar array: A device for protecting against arcing events solar array panels and control equipment supplying a main power bus is provided. The control equipment comprises a regulator for controlling a solar array voltage (VS) and includes a power dump stage for shunting the solar array voltage as a function of a... Agent: Bachman & Lapointe, P.C.

20070273341 - Voltage step-up/step-down switching regulator and control method thereof: A switching regulator is provided that includes a step-down circuit configured to output a voltage lower than an input voltage, a step-up circuit configured to output a voltage higher than the input voltage, and a control unit having a voltage detector configured to detect an output voltage and being configured... Agent: Cooper & Dunham, LLP

20070273340 - Buck-boost control logic for pwm regulator: A PWM regulator is operated either a buck mode or a boost mode depending on whether the input voltage is above or below the desired regulated output voltage. The technique uses two sawtooth ramps 180 degrees out of phase. Where the two ramps cross each other is a buck/boost transition... Agent: Patent Law Group LLP

20070273342 - Electric power supply apparatus and method of synchronously operating power converter: An electric power supply apparatus includes a distributed power generator such as a gas turbine generator and a power converter such as an inverter apparatus for converting electric power generated by the distributed power generator into AC electric power (alternating-current power) having a required frequency and a required voltage and... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20070273343 - Supply unit for a driver circuit and method for operating same: A power supply and method of operating the same. The method includes the steps of: operating first and second switches to an “On” position; operating said first switch to a “Off” position, causing a flow of a first free-wheeling current through a first free-wheeling current path; measuring a value of... Agent: Faegre & Benson LLP Patent Docketing

20070273344 - Oscillator circuit: The invention provides an oscillator circuit that reduces the dependence of an oscillation frequency on a power supply voltage. When a first charging and discharging circuit completes its discharge, a terminal voltage of a first capacitor of the first charging and discharging circuit is initialized to a power supply voltage... Agent: Morrison & Foerster LLP

20070273345 - System and method for providing switching to power regulators: System and method for providing switching to power regulators. According to an embodiment, the present invention provides system for providing switching. The system includes a first voltage supply that is configured to provide a first voltage. The system also includes a second voltage supply that is configured to provide a... Agent: Townsend And Townsend And Crew, LLP

20070273346 - Voltage regulator circuit with over-current protection: A voltage regulator circuit with over-current protection, which includes a linear regulator, a voltage controller, and an over-current protection circuit. The linear regulator includes a converter and a driver. The converter is connected to a voltage input terminal and a voltage output terminal. An output terminal of the driver is... Agent: Bacon & Thomas, PLLC

20070273347 - Voltage converter capable of avoiding voltage drop occurring in input signal: A voltage converter for providing an output voltage signal at an output port according to an input voltage signal is disclosed. The voltage converter comprises a feedback circuit, a transmission switch circuit, a voltage converting circuit, and a pre-bias circuit. The feedback circuit generates a feedback voltage signal according to... Agent: North America Intellectual Property Corporation

20070273348 - Voltage regulator having current canceling compensation: A voltage regulator which includes a network for improved compensation for reference voltage changes includes an IC including an error amplifier and a pulse width modulator (PWM), wherein an input of the PWM is coupled to an output of the error amplifier. A low pass filter comprising an inductor is... Agent: Akerman Senterfitt

20070273349 - Auxiliary turn-on mechanism for reducing conduction loss in body-diode of low side mosfet of coupled-inductor dc-dc converter: Conduction loss in the body-diode of a low side MOSFET of a power switching stage of one phase of a coupled-inductor, multi-phase DC-DC converter circuit, associated with current flow in the output inductor of that one phase that is induced by current flow in a mutually coupled output inductor of... Agent: Akerman Senterfitt

20070273350 - Pwm drive circuit: A PWM drive circuit of the present invention is built with a load driving power MOS transistor Q5 (Q6), a resistor R3 (R5) or R4 (R6), and a capacitance of the MOS transistor Q5 (Q6). The PWM drive circuit is provided with: a CR circuit that reduces a through rate... Agent: Fish & Richardson P.C.

20070273351 - Dynamic switch power converter: The present invention provides a dynamic switch power conversion circuit to improve the efficiency of a solar cell array, and specifically to operate the solar cell array under various sunlight intensities, especially under low light conditions. In an embodiment of the invention, the dynamic switch power conversion circuit comprises: a... Agent: Paul, Hastings, Janofsky & Walker LLP

20070273352 - Reference current generating method and current reference circuit: Provided are a reference current generating method and a current reference circuit. The reference current generating method includes generating a first current using a NMOS transistor and a second current using a PMOS transistor, calculating a current difference between the first and second currents, generating a third current which has... Agent: Volentine & Whitt PLLC

20070273353 - Power supply sense circuit, power supply system and integrated circuit: The present invention relates to a technique capable of reliably detecting supply voltages at a plurality of points in an integrated circuit with a simple arrangement and improving the setting accuracy of a supply voltage to the integrated circuit irrespective of position in the interior of the integrated circuit. The... Agent: Staas & Halsey LLP

20070273354 - Control circuit for diode based rf circuits: A control circuit for diode based RF circuit (6) comprising at least one analog commutating device (2, 3) having a plurality of digital control lines (A0, A1, A2, En1, B0, B1, B2, En2), a plurality of selectable poles (X0-X15) and at one common pole (Y1, Y2), the digital control lines... Agent: Rader Fishman & Grauer PLLC

20070268006 - D-optimized switching converter: A switching converter produces an output signal transmitted to a variable load impedance to produce a load voltage VDD across the load impedance and holds VDD close to a set point voltage VSP selected by control data DREF1 to compensate for variations in the load impedance which tend to drive... Agent: Smith-hill And Bedell, P.C.

20070268007 - Integrated tunable resonance circuit: An integrated tunable resonance circuit is provided for providing a high-frequency output signal with a frequency dependent on a control signal, comprising a parallel resonance circuit with a first inductive element and an output for providing the high-frequency output signal, a switching unit with a controlled path, and a control... Agent: Mcgrath, Geissler, Olds & Richardson, PLLC

20070268008 - Linear voltage regulator and method of limiting the current in such a regulator: A linear voltage regulator includes a voltage-regulating circuit that controls a power transistor connected to a load. A current-limiting loop circuit includes a common input/output node that is coupled to a control electrode of the power transistor. The loop senses whether a current representative of the current flowing through the... Agent: Gardere Wynne Sewell LLP Intellectual Property Section

20070268009 - Method and apparatus for a pulse width modulated dc-dc converter: A pulse width modulated pulse signal is generated and its duty cycle adjusted according to at least two different schedules, for example, a coarse tuning cycle and a fine tuning cycle. The target duty cycle is derived according to an offset between output voltage and target voltage, as well as... Agent: Townsend And Townsend And Crew, LLP

20070268010 - Voltage regulator with a wire arranging structure: A voltage regulator with a wire arranging structure is formed integrally with an insulated wire, and receives the insulated wire therein in a winding manner. The present invention has a collecting member extending from and covering the insulated wire. The collecting member has at least one accommodating groove and a... Agent: Rosenberg, Klein & Lee

20070262753 - Switching power supply with output ripple suppression: A switching power supply with output ripple suppression includes a rectification circuit, a filtering circuit, a PFC, a transformer, a voltage stabilization circuit and a DC/DC converting circuit with feedback control. The DC/DC converting circuit includes a switching circuit, a PWM generator and a feedback circuit. The feedback circuit receiving... Agent: North America Intellectual Property Corporation

20070262752 - Power converters having balanced power rail currents: power factor correction (PFC) circuit includes a coupled split boost choke having at least two windings, at least two boost diodes and at least two power rails. Each power rail includes one of the windings and one of the boost diodes. The PFC circuit further includes a current balancing circuit... Agent: Harness, Dickey, & Pierce, P.l.c

20070262754 - Load circuit supply voltage control: For one disclosed embodiment, an apparatus comprises a load circuit having one or more memory devices, one or more temperature sensors to sense one or more temperatures for the load circuit, and supply voltage control circuitry to control supply voltage to be applied to the load circuit. The supply voltage... Agent: Intel Corporation C/o Intellevate, LLC

20070262755 - Buck converter: The invention relates to a buck converter including a first high-side switch circuit having an input terminal electrically connected to a first power input terminal, a control terminal electrically connected to a first control signal source, and an output terminal; a second high-side switch circuit having an input terminal electrically... Agent: Birch, Stewart, Kolasch & Birch, LLP

20070262756 - System and method for phase management in a multiphase switching power supply: A system and method for managing phases in a multiphase switching power supply turns off a phase in light load conditions and turns on a phase in heavier load conditions. The increase or decrease in the number of phases changes the efficiency of the power supply in response to operating... Agent: Texas Instruments Incorporated

20070262757 - Power supply apparatus capable of decreasing ripple component and display apparatus using the same: In a power supply apparatus including a step-up circuit, an output terminal is provided and connectable to an external smoothing circuit formed by a parasitic resistance of a connection layer and an external capacitor. A resistor is connected between an output end of the step-up circuit and the output terminal.... Agent: Sughrue Mion, PLLC

20070262759 - Multi-phase voltage regulator with phases ordered by lowest phase current: While firing a number of phases of a multi-phase switching voltage regulator in a sequence, a determination is made as to which one of the phases has the lowest phase current. Then, the next phase, to be fired in the sequence, is selected as the one that has been determined... Agent: Blakely Sokoloff Taylor & Zafman

20070262758 - Multiphase power converter having balanced currents: A power converter includes multiple phase circuits, each phase circuit includes a power switch for delivering power to an output of the power converter, a current sensor connected to the power switch for sensing a current in the power switch, a duty cycle controller having an output connected to the... Agent: Harness, Dickey, & Pierce, P.l.c

20070262760 - Multiple-output dc-dc converter: Disclosed is a single-inductor DC-DC converter capable of delivering a multiple output voltages. One of the output voltages is always higher than the input voltage, while other output voltages may by higher or lower than the input voltage. The DC-DC converter requires no input power switch connected between the input... Agent: Jianq Chyun Intellectual Property Office

20070262762 - Semiconductor device: A semiconductor device having conversion units which change the reference potential of an input signal to a first or second reference potential and outputs the input signal to a first drive unit or second drive unit , change the reference potential of a first control signal output from the first... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20070262761 - Switching power supply: In a switching power supply apparatus for performing a switching control of a power MOS transistor that flows current to a coil and converting input voltage into output voltage, even if there occurs offset voltage in a current sensing operational amplifier, source potential of a current sensing MOS transistor is... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070262763 - Power supply circuit device and electronic apparatus provided therewith: There are provided a resistor R2 arranged in parallel with a resistor R1 that produces a feedback signal indicating a value of an output current to a load 7 and, in a control circuit device 6, a voltage changing circuit 68 that changes a reference potential applied to the inverting... Agent: Nixon & Vanderhye, PC

20070262764 - Power supply circuit device and electronic apparatus provided therewith: A control circuit device 6 is supplied with a buffer circuit 71 that has an input side thereof connected to a PWM input terminal PWN, and the buffer circuit 71 transforms a PWM signal being supplied from the outside to obtain a waveform, whereby an “H” level of a PWM... Agent: Birch Stewart Kolasch & Birch

20070262765 - Method for controlling an electrical light source by pulse width modulation: Disclosed is for controlling a light source by pulse width modulation of a supply voltage. The supply voltage, or a parameter dependent thereon, is measured and the pulse width is controlled as function of the measured value. The supply voltage or parameter is measured at least twice during the pulse... Agent: Continental Teves, Inc.

20070262766 - Current mirror for high frequency monolithic integrated circuits: A current-mirror circuit for monolithic integration in semiconductor microwave circuits is presented which overcomes the detrimental aspects of the emitter-follower current mirror resulting in improved accuracy and stability of the current mirror even under low voltage operation of circuits with high emitter-bias voltages such as GaAs. Advantageously the circuit can... Agent: Kenyon & Kenyon LLP

20070257643 - Switching voltage regulator with an improved range of input voltage: A switching voltage regulator has a first switch, a second switch, and an inductor, which are coupled together to a switch node. A switch control system applies a drive signal for controlling the first and the second switches. A duty cycle detecting circuit detects a duty cycle of the drive... Agent: North America Intellectual Property Corporation

20070257644 - Voltage regulator with inherent voltage clamping: A voltage regulator may include a resistor-based voltage divider circuit generating a desired output voltage from a supply voltage, an output NMOS device whose source terminal may be configured as the output of the voltage regulator and whose drain terminal may be configured to receive the supply voltage, and a... Agent: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.

20070257645 - Power supply apparatus: In a power supply apparatus in which a voltage at a terminal on a load circuit is fed back to a control circuit so as to control a step-up operation by use of a booster circuit, a protection function is provided for a voltage fed back to the control circuit.... Agent: Cantor Colburn, LLP

20070257646 - Voltage-supply circuit and method for providing a circuit with a supply voltage: A current-supply circuit includes a regulation transistor. The regulation transistor is formed to regulate, based on a first supply voltage present on a first supply-voltage feed line, a second supply voltage present on a second supply-voltage feed line. The regulation transistor provides a supply current to the second supply-voltage feed... Agent: Dickstein Shapiro LLP

20070257648 - Load terminal for use in a remote controlled load management system: A load terminal for use in a remote controlled load management system includes a control unit for starting to count a delay time and sending to a central controller monitoring data indicating that an illumination load has been turned off while controlling a power supply ON/OFF unit to keep the... Agent: Bacon & Thomas, PLLC

20070257647 - Power supply apparatus: A power supply apparatus for supplying an output voltage to a load is provided, which comprises a power output unit, a feedback unit and a control unit. The power output unit adjusts and supplies the output voltage to the load in accordance with at least one driving signal. The feedback... Agent: J.c. Patents, Inc.

20070257650 - Digital calibration with lossless current sensing in a multiphase switched power converter: Disclosed is a multi-phase power regulator that accurately senses current at a load in a lossless manner and adjusts the power supplied to the load based on the sensed current. Also disclosed is a method of calibrating a multiphase voltage regulator by applying a known calibration current at the load... Agent: Noblitt & Gilmore, LLC

20070257649 - Method and an apparatus to regulate voltage supply: A method and an apparatus to regulate voltage supply have been disclosed. In one embodiment, the apparatus includes a power converter block to generate an output voltage from an input voltage and a voltage regulator controller coupled to the power converter block to input at least one time-modulated signal to... Agent: Blakely Sokoloff Taylor & Zafman

20070257652 - Booster circuit with protection function and electric device: An electric device includes a booster circuit. When a switch control circuit detects abnormal lowering of a second voltage provided from the booster circuit while the booster circuit is boosting a first voltage, the switch control circuit changes a switch from an on state to an off state. This cuts... Agent: Fish & Richardson P.C.

20070257651 - Reverse current comparator for switching regulators: A reverse current comparator for use in switching regulators includes a differential stage configured to encode the difference in voltage between an N and a P input. The differential stage feeds one or more gain stages. At least one of the gain stages includes one or more hysteresis devices. When... Agent: Advanced Analogic Technologies

20070257653 - Switching power circuit and power control method: A switching power circuit having a counter which periodically counts a value between a first value and a second value, a determining unit which continuously determines a third value between the first value and the second value, based on a voltage difference between an output voltage and a reference voltage,... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070257654 - Power management apparatus: In one aspect, there is disclosed a power management device that includes a housing, at least one input port, and at least one output port. Also included is a CPU and a user interface. Electrical circuitry connects the ports, CPU and user interface. The CPU includes a real-time operating system... Agent: Gifford, Krass, Sprinkle,anderson & Citkowski, P.c

20070257655 - Variable sub-bandgap reference voltage generator: A sub-bandgap reference voltage generator, generates a pair of variable voltages one having a positive temperature coefficient and one having a negative voltage coefficient. The pair of voltages are added to generate an output voltage whose value and temperature may be varied. To achieve this, a first voltage having a... Agent: Townsend And Townsend And Crew, LLP

20070257656 - Method and apparatus for designing a transformer: Various techniques directed to the design and construction of transformers are disclosed. In one aspect, a computer system according to embodiments of the present invention includes instructions stored on a storage media which when executed by a processor performs the operations of loading parameters of a transformer included in a... Agent: Blakely Sokoloff Taylor & Zafman

20070252562 - Regulator circuit and corresponding uses: Regulator circuit includes at least two input terminals, one or several groups of reactances with at least two reactances, at least two output terminal, a plurality of interconnections suitable for connecting said reactances with respect to one another and suitable for connecting at least one of the reactances with the... Agent: Staas & Halsey LLP

20070252563 - Multi-ouput type dc/dc converter: Disclosed a multi-output type DC/DC converter including: a reactor connected to a direct-current power supply; a first switching circuit composed of switches to apply a current to the reactor; a second switching circuit composed of switches to switch an output from the reactor to any one of output terminals; output... Agent: Frishauf, Holtz, Goodman & Chick, PC

20070252564 - Method and circuit for a voltage supply for real time clock circuitry based on voltage regulated charge pump: A versatile voltage regulator accommodates either an Alkaline or Lithium-Ion battery main battery and provides low-current power for a real time clock module and for charging a backup battery. Depending upon the battery power source that is used, the present invention provides a best circuit configuration for efficient power conversion.... Agent: Schneck & Schneck

20070252565 - Inrush current limiting circuit and power supply device using the same: An inrush current limiting circuit (12) includes a transistor (Q), a switch element (M), and a short-circuit protection circuit (121). An emitter of the transistor is as an input of the inrush current limiting circuit. An input of the switch element is connected to a collector of the transistor. A... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang Jeffrey T. Knapp

20070252566 - Method to reduce inrush voltage and current in a switching power converter: A circuit for minimizing voltage inrush upon startup in a switching power converter having a switching stage including high and low switches connected at a common node, a feedback loop for maintaining a target output voltage, an output capacitor connected between an output node and the ground, an inductor connected... Agent: Ostrolenk Faber Gerb & Soffen

20070252567 - Switching regulator circuits: A current-mode switching regulator including at least: an inductor; a main switch for controlling the current flow through the inductor; and a feedback control circuit for operating the main switch cyclically and to vary a duty cycle of the main switch so as to substantially maintain an output voltage of... Agent: Dickstein Shapiro LLP

20070252568 - Reference voltage generator, frequency generator and controller: A controller comprises an error comparator, a frequency generator, a pulse-width modulator and an output driver. The error comparator generates an error signal according to a feedback signal and a reference voltage. The frequency generator provides a frequency signal. The pulse-width modulator coupled to the error comparator and the frequency... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20070252569 - Off-line converter with digital control: A DC to DC converter comprising an energy storage element comprising an energy storage element input and an energy storage element output, the energy storage element input coupled to receive a first power level and the energy storage element output providing a second power level. The converter also comprises a... Agent: Blakely Sokoloff Taylor & Zafman

20070252570 - Right half-plane zero compensation and cancellation for switching regulators: An improved method of canceling a RHPZ of a switching regulator can include detecting a predetermined error signal provided to a pulse width modulation (PWM) circuit, wherein the predetermined error signal is associated with the RHPZ. Once a RHPZ is detected, a ramp waveform provided to the PWM circuit can... Agent: Bever Hoffman & Harms, LLP Tri-valley Office

20070252571 - Electric power applying circuit and test apparatus: There is provided an electric power applying circuit for applying a direct current power to a load. The electric power applying circuit includes an output buffer that (i) is supplied with, as power source voltages, positive and negative high voltages which are determined in accordance with a range of an... Agent: Jianq Chyun Intellectual Property Office

20070252572 - Am data recovery circuit: The present invention provides a passive RFID chip with on-chip charge pumps for generating electrical power for the chip from radio frequencies. The passive RFID chip comprises an analog portion and a digital portion. The analog portion primarily comprises a voltage sensor and an AM data detector. The digital portion... Agent: Paul, Hastings, Janofsky & Walker LLP

20070252573 - Reference voltage generator circuit: A reference voltage generation circuit has transistors generating a PTAT current that increases in proportion to temperature, a transistor generating a CTAT current that decreases in proportion to temperature, a first variable resistor adjusting an output voltage, a transistor supplying the PTAT current to the first variable resistor via a... Agent: Arent Fox PLLC

20070252574 - Device for adjusting the impedance of a high voltage line supplying an alternating current: A device (8), for adjusting the impedance of a high voltage line (9), supplying an alternating current, has at least one control coil (2), which may be inserted in series in the high voltage line (9) and at least one switching device (3,10), provided for each control coil (2). The... Agent: Baker Botts L.L.P. Patent Department