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Electricity: power supply or regulation systems February patent applications/inventions, industry category 02/11

20110043172 - Buck-boost converter with smooth transitions between modes: In a buck-boost converter, the method compensates for the boost mode power switch having a minimum on-time when entering the buck-boost mode from the buck mode by immediately decreasing a duty cycle of the buck mode power switch upon entering the buck-boost mode. This prevents the inductor current from being... Agent: Patent Law Group LLP

20110043173 - Multiphase dc to dc voltage converter: A multiphase DC to DC voltage converter which has multiple converter cells which are situated parallel to one another and are clocked with a time offset. Furthermore, it contains one magnetic measuring bridge between the outputs of each two converter cells.... Agent: Kenyon & Kenyon LLP

20110043175 - Current-mode control switching regulator and operations control method thereof: Disclosed is a current-mode control switching regulator that steps down or steps up an input voltage input to an input terminal to a predetermined constant voltage and outputs the stepped input voltage from an output terminal as an output voltage. The current-mode control switching regulator includes a switching element, an... Agent: Cooper & Dunham, LLP

20110043176 - Step-down switching regulator: A step-down switching regulator includes a switching element performing switching in accordance with an input control signal to charge an inductor with an input voltage; a synchronous rectification element performing switching in accordance with an input control signal to discharge the inductor; a power supply circuit part generating and outputting... Agent: Cooper & Dunham, LLP

20110043174 - Voltage converter with first push: A boost DC/DC power converter is disclosed that has a low voltage source, an inductor and a switching device that forms a series loop, a diode in series with a capacitor coupled across the switching device, a voltage divider coupled across the capacitor and a pulse width modulator that is... Agent: Eli Weiss Oakwood Law Group, LLP

20110043177 - Control device for an interleaving power factor corrector: In an interleaving power factor corrector, a control device interleavingly drives first and second converting circuits such that the power factor corrector generates a voltage output (Vo), and includes first and second control modules generating respectively first and second driving signals (Q_master, Q_slave) that correspond respectively to first and second... Agent: Occhiuti Rohlicek & Tsao, LLP

20110043179 - Dc-dc converter: A DC-DC converter providing a DC output voltage at an output node. The DC-DC converter comprises an output stage, a digital controller, and a controller. The output stage comprises a pull-up circuit having a control terminal and coupled between a first fixed voltage and a internal node, a pull-down circuit... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20110043178 - Electronic device with power switch capable of regulating power dissipation: An electronic device with a power switch capable of regulating power dissipation includes a power supply device; a power switch, for providing an output voltage; and a current regulating circuit, which includes an adaptive control unit, for outputting a regulating signal, according to the voltage difference between the power supply... Agent: North America Intellectual Property Corporation

20110043180 - Power supply controller: A power supply controller includes: a controlling section that, upon determination that no anomaly has occurred, causes a semiconductor switch to execute turning on and, upon determination that the anomaly has occurred, causes the semiconductor switch to maintain an off state; a monitoring section that monitors which condition the controlling... Agent: Oliff & Berridge, PLC

20110043181 - Single-inductor-multiple-output regulator with auto-hopping control and the method of use: A switching regulator is provided herein comprising a voltage source, a plurality of switching elements, an inductive element, and a controller. The controller coordinates the plurality of switching elements as to sequentially and periodically switching the inductive element to generate a plurality of regulated DC voltages. The controller adjusts a... Agent: Leydig Voit & Mayer, Ltd

20110043182 - Automatic voltage regulator: The present invention relates to an automatic voltage regulator, and more specifically, to an automatic voltage regulator capable of precisely controlling the output voltage level by using a toroidal autotransformer. The present invention has precise voltage control to enable the output of the voltage level desired by the user, and... Agent: Jae Y. Park

20110043183 - Field instrument: A current control element (variable resistance element) is provided on a supply path of the current from a voltage regulator to another voltage regulator. An alarm driving circuit is provided on a branch flow path of the current from the voltage regulator to the voltage regulator. When the alarm driving... Agent: Mcdermott Will & Emery LLP

20110043184 - Cmos bandgap reference source circuit with low flicker noises: The present abstract discloses a CMOS bandgap reference source circuit, comprising a startup circuit, a power-off control circuit, a reference voltage generating circuit and an operational amplifier. The positive and a negative input terminal of the operational amplifier both consist of two same field effect transistors and both are provided... Agent: Zhen Zheng Lu

20110043185 - Current reference circuit: A current reference circuit includes a proportional-to-absolute temperature (PTAT) current generator, a band-gap reference circuit and a current replication circuit. The PTAT generator generates a PTAT current. The band-gap reference circuit generates a reference voltage based on the PTAT current and generates a second current by cancelling a first current... Agent: Volentine & Whitt PLLC

20110043186 - Method for controlling a grid voltage: The present invention relates to a method for controlling a voltage level of a power supply grid operationally connected to a source of electrical power, the method comprising the steps of determining a short circuit impedance of the power supply grid at a point of common coupling, calculating, using the... Agent: Wood, Herron & Evans, LLP

20110037443 - Parallel connected pfc converter: A parallel PFC converter comprises a first PFC circuit, a second PFC circuit, and a voltage divider. The second PFC circuit is connected in parallel with the first PFC circuit for generating an output voltage of the parallel PFC converter. The voltage divider is coupled to receive the output voltage... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20110037444 - Bridgeless boost pfc circuits and systems with reduced common mode emi: According to one example embodiment, a bridgeless boost power factor correction (PFC) system includes a first input for connection to a first line of an alternating current (AC) source and a second input for connection to a second line of the AC source. The PFC system includes an output for... Agent: Harness, Dickey, & Pierce, P.l.c

20110037445 - Power control circuit for wire compensation and compensation method of the same: A power control circuit with wire compensation is provided. The power control circuit is applied in a power converter, which has an output coupled to a load through a power wire. The power control circuit has an adaptive sensing circuit and a controller. The adaptive sensing circuit is utilized for... Agent: Rosenberg, Klein & Lee

20110037447 - Component powered by hdmi interface: A HDMI (High-Definition Multimedia Interface) transmitter component may be operated solely on power that is scavenged and converted from termination tail current received while the HDMI transmitter component is coupled to an HDMI compliant sink connector on a HDMI receiver component. The termination tail current is received at the transmitter... Agent: Texas Instruments Incorporated

20110037446 - Switch mode power supply with dynamic topology: A power supply system has an inductive device, a plurality of switching devices for providing connection of the inductive device to input and output nodes and a ground node, and a switch driver circuit for driving the switching devices so as to enable the power supply to operate in a... Agent: Mcdermott Will & Emery LLP

20110037448 - Switching regulator with transient control function and control circuit and method therefor: The present invention discloses a switching regulator with transient control function, and a control circuit and a method for controlling the switching regulator. The switching regulator with transient control function includes: a power conversion circuit for receiving an input voltage and converting the input voltage to an output voltage; a... Agent: Tung & Associates / Randy W. Tung, Esq.

20110037449 - Semiconductor device: A non-insulated DC-DC converter has a power MOS-FET for a highside switch and a power MOS-FET for a lowside switch. In the non-insulated DC-DC converter, the power MOS-FET for the highside switch and the power MOS-FET for the lowside switch, driver circuits that control operations of these elements, respectively, and... Agent: Antonelli, Terry, Stout & Kraus, LLP

20110037450 - Semiconductor device: In order to reduce parasitic inductance of a main circuit in a power supply circuit, a non-insulated DC-DC converter is provided including a circuit in which a power MOS•FET for a high-side switch and a power MOS•FET for a low-side switch are connected in series. In the non-insulated DC-DC converter,... Agent: Antonelli, Terry, Stout & Kraus, LLP

20110037451 - Bandgap voltage reference circuit: A bandgap voltage reference circuit comprising: a first P-N junction circuit generating a first voltage which changes according to a first characteristic; a second P-N junction circuit generating a second voltage which changes according to a second characteristic different from the first characteristic; an amplifier receiving the first and second... Agent: Fujitsu Patent Center Fujitsu Management Services Of America, Inc.

20110031941 - System and method for current balancing: A power factor correction (PFC) system includes a comparison module, an adjustment module, a compensation module, and a duty cycle control module. The comparison module measures N currents having different phases, and generates (N−1) comparisons based on the N measured currents, wherein N is an integer greater than one. The... Agent: Harness, Dickey & Pierce, P.L.C

20110031940 - System and method for power factor correction frequency tracking and reference generation: A power factor correction (PFC) system includes a period determination module, a frequency generation module, an angle generation module, a signal generation module, and an angle correction module. The period determination module determines a period of an input alternating current (AC) line signal based on a time between rising edges... Agent: Harness, Dickey & Pierce, P.L.C

20110031942 - System and method for reducing line current distortion: A power factor correction (PFC) system includes an adjustment module, a compensation module, and a duty cycle control module. The adjustment module generates N time advances based on N predetermined time advances and (N−1) time advance adjustments, wherein N is an integer greater than zero. The compensation module generates N... Agent: Harness, Dickey & Pierce, P.L.C

20110031943 - System and method for rejecting dc current in power factor correction systems: A power factor correction (PFC) system includes a direct current (DC) module, an error control module, an offset module, and a duty cycle control module. The DC module determines an average current value based on a plurality of current values over at least one cycle of an input alternating current... Agent: Harness, Dickey & Pierce, P.L.C

20110031944 - High voltage latching and dc restoration isolation and level shifting method and apparatus: A device and method for dc isolation and level shifting includes a driver circuit powered by a first voltage range, a capacitor connected to the driver circuit, and a latching circuit connected to the capacitor. The latching circuit is powered by a second voltage range and is configured to restore... Agent: Texas Instruments Incorporated

20110031945 - Threshold voltage extraction circuit: A pair of MOS transistors (10,12) are arranged as a potential divider. As the MOS transistors (10,12) pass from a weak inversion regime to a strong inversion regime, the voltage at the midpoint of the threshold divider changes from being substantially constant to varying. A difference amplifier (14) is used... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20110031946 - Multiple branch alternative element power regulation: A power regulation circuit includes at least a first regulator connected to a second regulator in series forming a first regulator pair and a third regulator connected to a fourth regulator in series forming a second regulator pair. The first regulator pair is connected in parallel with the second regulator... Agent: Ibm Corporation RochesterIPLaw Dept. 917

20110031948 - Dc-dc converter: A DC-DC converter including a Pulse Width Modulation (PWM) controller for converting an input voltage into an output voltage is provided. The PWM controller includes an error amplifier, a comparator, a PWM generator and a ramp generator. The error amplifier generates an error signal according to a difference between a... Agent: Birch Stewart Kolasch & Birch

20110031947 - Flip chip package for monolithic switching regulator: Methods and apparatuses related to packaging a monolithic voltage regulator are disclosed. In one embodiment, an apparatus includes: (i) a monolithic voltage regulator with a transistor arranged as parallel transistor devices; (ii) bumps on the monolithic voltage regulator to form connections to source and drain terminals of the transistor; (iii)... Agent: Michael C. Stephens, Jr.

20110031949 - Self-oscillating switched mode converter with valley detection: An energy converter is disclosed in which self oscillation mode operation is improved by a closed loop feedback control. The feedback control utilises the voltage error from the voltage valley in the drain voltage (Vdrain) of the converter switch (1), to determine an error (E(n)) in the time domain. Control... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20110031950 - System and method for load control: A system is described including a means for receiving a potential and selectively supplying the potential to a load. The receiving and supplying means being responsive to a load control signal to supply the potential to the load when the load control signal is present. The system also includes a... Agent: Honigman Miller Schwartz & Cohn LLP

20110031951 - Frequency modulation control of a buck-boost power converter: A control circuit and method are proposed to generate a control signal to operate a buck-boost power stage of a buck-boost power converter to convert an input voltage to an output voltage. The control circuit and method detect the output voltage to generate an error signal, control the frequency of... Agent: Rosenberg, Klein & Lee

20110031954 - Driving power-supply circuit: The object of the present invention is reducing power consumption of a driving power supply circuit. In the case where the driving voltage Vi is higher than the reference voltage ViH, The signal S3P, S3N of the differential amplifier 30P, 30N become level “L” concurrently, and the signal S4P, S4N... Agent: Rabin & Berdo, PC

20110031953 - Envelope tracking power supply circuit and high-frequency amplifier including envelope tracking power supply circuit: The invention aims to maintain a high efficiency even for a high-frequency signal having a wideband envelope. The envelope tracking power supply circuit 5 is a power supply circuit for generating an output voltage according to the envelope of a high frequency signal and comprises a voltage follower circuit 7... Agent: Mcdermott Will & Emery LLP

20110031952 - Semiconductor apparatus and power source circuit: According to one embodiment, a semiconductor apparatus includes a substrate, a semiconductor layer of a first conductivity type, a first semiconductor region of a second conductivity type, a first main electrode, a second semiconductor layer of the second conductivity type, a third semiconductor layer of the first conductivity type, a... Agent: Patterson & Sheridan, L.L.P.

20110031955 - Constant current device: A constant current device in accordance with the present invention is connected to an external voltage source and comprises an input unit, a driving transistor and a voltage control unit. The input unit is connected to the external voltage source. The driving transistor is used to output constant current. The... Agent: Morris Manning Martin LLP

20110031957 - Controlling power loss in a switched-capacitor power converter: The disclosed embodiments relate to a system that implements a switched-capacitor power converter which is configured to actively control power loss while converting an input voltage to an output voltage. This system includes one or more switched-capacitor blocks (SCBs), wherein each SCB includes a first capacitor and a set of... Agent: Pvf -- Apple Inc. C/o Park, Vaughan, Fleming & Dowler LLP

20110031956 - High-efficiency, switched-capacitor power conversion: Some embodiments of the present invention provide a system that efficiently converts between a lower input voltage and a higher output voltage. This system includes an input which receives the input voltage, and an output which provides the output voltage. The system also includes a first capacitor with a higher... Agent: Pvf -- Apple Inc. C/o Park, Vaughan, Fleming & Dowler LLP

20110025279 - Power supply circuit and semiconductor device: A power supply circuit comprises: a first voltage booster circuit that receives a first clock signal having a fixed frequency, and supplies a voltage to a prescribed circuit; and a second voltage booster circuit that receives a second clock signal having a frequency corresponding to an operating frequency of the... Agent: Foley And Lardner LLP Suite 500

20110025283 - Dc-dc converter, control circuit, and power supply control method: A DC-DC converter includes a first amplifier that amplifies a first difference between a first reference voltage and a feedback voltage corresponding to an output voltage, a second amplifier that amplifies a second difference between the first reference voltage and an integrated value of the feedback voltage, and a controller... Agent: Fujitsu Patent Center Fujitsu Management Services Of America, Inc.

20110025282 - Driving circuit for an electric load and electric system comprising the circuit: An electronic circuit includes a node coupled to a load to be driven, and a power device, which can be switched between activation and deactivation and coupled to the node. The circuit further includes a current generator having an output connected to the node and that can be enabled to... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20110025284 - Multi-phase dc-to-dc converter with daisy chained pulse width modulation generators: A multi-phase DC-DC converter is disclosed. The DC-DC converter has a plurality of phases, each with a separate PWM generator for driving a totem pole of transistors. A master PWM generator operates off of a master clock signal. The remainder of the phases are slaved to the master PWM generator.... Agent: Perkins Coie LLP Patent-sea

20110025280 - Regulator having phase compensation circuit: A regulator circuit includes an output transistor that generates an output current in accordance with a control voltage that is applied to a control terminal of the output transistor. A differential amplifier provides feedback control of the control voltage in accordance with a level of the output current. A phase... Agent: Freescale Semiconductor, Inc. Law Department

20110025281 - Transient differential switching regulator: The present invention provides a transient differential switching regulator for a DC power supply. In one aspect, an output of the regulator is provided between a positive voltage line and a return line. A switching circuit switches the regulator between a normal mode, wherein the output voltage is controlled at... Agent: Wells St. John P.s.

20110025286 - Control circuit for a primary controlled switched mode power supply with improved accuracy of the voltage control and primary controlled switched mode power supply: The invention under consideration refers to a controller for a primary-side regulated control power supply unit for the regulation of the output of the primary regulated control power supply unit. The invention also concerns a method for the operation of a control power supply unit of the generic type and... Agent: Marsh, Fischmann & Breyfogle LLP

20110025288 - Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply: A power supply regulator including a variable current limit threshold that increases during an on time of a switch. In one aspect, a power supply regulator includes a comparator coupled to receive a signal representative of a current through a switch during an on time of the switch. The comparator... Agent: Blakely Sokoloff Taylor & Zafman LLP

20110025285 - Power supply voltage controlling circuit for use in subthreshold digital cmos circuit including minute current generator and controlled output voltage generator circuit: In a circuit and method for correcting a delay variation of a subthreshold CMOS circuit operating in a subthreshold region, a power supply voltage controlling circuit is provided for supplying a controlled output voltage to a subthreshold digital CMOS circuit as a controlled power supply voltage. The subthreshold digital CMOS... Agent: Wenderoth, Lind & Ponack, L.L.P.

20110025287 - Regulator circuit: An object of the present invention is to reduce variations in the value of the output potential VDD of a regulator circuit including a bias circuit referring threshold voltage. The regulator circuit includes a bias circuit referring threshold voltage, an error amplifier, an output control circuit, and a feedback voltage... Agent: Fish & Richardson P.C. (dc)

20110025289 - Two-stage switching power supply: A two-stage switching power supply includes a first-stage power circuit, a bus capacitor, a second-stage power circuit and a power control unit. The first-stage power circuit is connected to a power bus for receiving an input voltage, and includes a first switching circuit. The input voltage is converted into a... Agent: Kirton And Mcconkie

20110025290 - Dc power converting circuit and method thereof: A direct current (DC) converting circuit includes a DC input end, for receiving a DC input voltage; a DC output end, for providing a predetermined DC voltage; a switch, coupled between the DC input end and the DC output end, for providing a direct path; a DC-DC step-down unit, coupled... Agent: Wpat, PC Intellectual Property Attorneys

20110025291 - Start-up circuits for starting up bandgap reference circuits: An integrated circuit structure includes a bandgap reference circuit and a start-up circuit. The bandgap reference circuit includes a positive power supply node and a PMOS transistor including a source coupled to the positive power supply node. The start-up circuit is configured to be turned on during a start-up stage... Agent: Slater & Matsil, L.L.P.

20110025292 - Method and apparatus for providing power conversion with parallel function: An approach is provided for generating a plurality of output signals by a plurality of power modules in response to the respective temperature signals of said modules. Each of the power modules is arranged in parallel, each being configured to provide power conversion. Temperature signals representing temperatures of the plurality... Agent: Ditthavong Mori & Steiner, P.C.