Electricity: power supply or regulation systems inventions 02/09

20090051333 - Switching power source apparatus and control method thereof: A switching power source apparatus includes a storage unit to store energy obtained from input power supplied to the storage unit, and to output at least of the stored energy as output power; a first switch; a second switch connected in series with the first switch, the series connection of... Agent: Stein, Mcewen & Bui, LLP

20090051334 - Droop circuits and multi-phase dc-dc converters: A droop circuit of a DC-DC converter is provided, wherein the DC-DC converter includes an output inductor coupled between an output of the DC-DC converter and a phase node for providing an output voltage. A current sense device is coupled between the phase node and the output of the DC-DC... Agent: Birch Stewart Kolasch & Birch

20090051335 - Multi-phase dc-dc converter and method for balancing channel currents: A multi-phase DC-DC converter is provided. A plurality of switching sets are coupled to an output, wherein each switching set includes a phase node. A plurality of inductors are separately coupled between the phase nodes and the output. A sense circuit has a plurality of sense units separately coupled to... Agent: Birch Stewart Kolasch & Birch

20090051336 - Integrating current regulator and method for regulating current: Current regulators and related methods for regulating a current through a load. The current regulator may include, for example, a first circuit configured to determine an amount of current that flows through the load; and a second circuit configured to cause a voltage to be applied across the load, the... Agent: Banner & Witcoff, Ltd. Attorneys For Client 007052

20090051337 - Bidirectional power supply device: In a bidirectional power supply device, a DC-DC converter is connected such that the longer an ON time of the first switch becomes, the higher a voltage of a second positive terminal and a second negative terminal becomes. When stopping the supply of power from a first positive terminal and... Agent: Ratnerprestia

20090051338 - Constant current regulator with current sensing circuit loop: A constant current regulator includes a current sensing circuit loop connected to a switch unit of the constant current regulator to detect a current flowing through the switch unit and to generate a detection current that is in proportion to the current flowing through the switch unit. The detection current... Agent: Rosenberg, Klein & Lee

20090051339 - Dc-dc converter and control circuit for dc-dc converter: A DC-DC converter prevents through current from flowing in an output transistor. A first transistor receives an input voltage. A second transistor is connected to the first transistor. A comparator is connected to the second transistor. The comparator detects current flowing through a choke coil based on the potential difference... Agent: Arent Fox LLP

20090051340 - Linear transconductor for a one-cycle controller, notably for a dc-dc switching converter: A linear transconductor (LT), for instance for a one-cycle controller (OC), comprises i) an operational amplifier (OA) having non-inverting (+) and inverting (−) inputs, a power supply input intended to be connected to a DC voltage (VBAT), and an output (OO), ii) a voltage divider means (R1,R2) comprising a first... Agent: Nxp, B.v. Nxp Intellectual Property Department

20090051341 - Bandgap reference circuit: A bandgap reference circuit includes a PTAT current generating circuit for generating a PTAT current; a CTAT circuit generating circuit for generating a CTAT current; a node for receiving the PTAT current and the CTAT current; and, a first resistor connected between the node and a ground, wherein a reference... Agent: Wpat, PC

20090051342 - Bandgap reference circuit: A bandgap reference circuit includes an input circuit having a first FET, a second FET, and a first resistor, wherein a first node is connected to the first FET having a first threshold voltage, the first resistor is connected between a second node and the second FET having a second... Agent: Wpat, PC

20090051343 - Reference voltage generation circuit, drive circuit, light emitting diode head, and image forming apparatus: A reference voltage generation circuit includes a current-mirror circuit formed of a plurality of MOS (Metal Oxide Semiconductor) transistors each having a source terminal connected to a power source and a gate terminal connected to with each other; and a plurality of transistors each connected to a drain terminal of... Agent: Kubotera & Associates, LLC.

20090051344 - Triac/scr-based energy savings device, system and method: A TRIAC/SCR-based energy savings device, system and method (1) wherein a predetermined amount of voltage below a nominal line voltage and/or below a nominal appliance voltage is saved, thereby conserving energy. Phase input connections (2) are provided for inputting analog signals into the device and system (1). A magnetic flux... Agent: Edward M. Livingston, Pa

20090051345 - Self-oscillating switching regulator: A self-oscillating switching regulator includes a control winding N3 allowing a voltage to be induced therein by a magnetic flux created in a primary winding N1 of a high frequency transformer T, a capacitor C3 charged by the voltage induced in the control winding N3, a transistor Q2 that is... Agent: Jordan And Hamburg LLP

20090051346 - Voltage conversion device and vehicle: A DC/DC converter includes a reactor, IGBT devices, a dead time generation unit, and a DC-CPU. The dead time generation unit operates in response to a reference signal for a duty ratio, to output first and second activation signals provided with an inactive period corresponding to a dead time preventing... Agent: Kenyon & Kenyon LLP

20090045785 - Sensing a phase-path current in a multiphase power supply such as a coupled-inductor power supply: An embodiment of a power supply includes a supply output node, phase paths, and sensor circuits. The supply output node is operable to carry a regulated output voltage, and each phase path has a respective phase-path non-output node, has a respective phase-path output node coupled to the supply output node,... Agent: Graybeal Jackson LLP

20090045786 - Mode transitioning in a dc/dc converter using a constant duty cycle difference: According to an exemplary embodiment, a method includes the step (910) of driving a buck section of a DC/DC converter with a buck signal that has a buck duty cycle and concurrently with driving the buck section, driving a boost section of the DC/DC converter with a boost signal that... Agent: Ingrassia Fisher & Lorenz, P.C. (fs)

20090045788 - High voltage sepic converter: A SEPIC converter with over-voltage protection includes a high-side inductor that connects a node Vw to a node Vx. The node Vx is connected, in turn to ground by a power MOSFET. The node Vx is also connected to a node Vy by a first capacitor. The node Vy is... Agent: Advanced Analogic Technologies

20090045789 - Power supply circuit: A power supply circuit includes a standard voltage generator; a regulator to control an output voltage, and to be capable of being switched ON/OFF; a capacitor in parallel between the standard voltage generator and the regulator; a discharging circuit including a first switch and a second switch configured to discharge... Agent: Cantor Colburn, LLP

20090045787 - Semiconductor device and power supply device: At the time of voltage adjustment, a selector (23) outputs data (D01, D1) externally received, to a current adjustment unit (24). The current adjustment unit (24) changes current (I01) in accordance with the data (D1) so that a voltage (VOUT) changes. The data (D1) obtained when the voltage (VOUT) is... Agent: Fish & Richardson P.C.

20090045792 - Power supply device and image forming apparatus: A charging unit charges a capacitor that is configured to be charged and discharged to drive a load. A switching unit switches on and off between the capacitor and the charging unit. A delay control unit delays an output of a switching control signal for controlling the switching unit until... Agent: Harness, Dickey & Pierce, P.L.C

20090045790 - Switching mode power supply apparatus having passive clamp circuit: A switching mode power supply apparatus includes a transformer, a main switch to adjust power supplied to a primary coil of the transformer, a passive clamp circuit to suppress a voltage stress of the main switch, and a control circuit to disable a clamping operation of the passive clamp circuit... Agent: Stein, Mcewen & Bui, LLP

20090045791 - Switching regulator: An exemplary switching regulator, is provided. The switching regulator includes an oscillator, a PWM logic controller, an inductor, a capacitor, a switch, a driver, a current sense amplifier, and a minimum power pulse width generator. The current sense amplifier and the minimum power pulse width generator compose a first feedback... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang

20090045793 - Stabilizing methods for current source: A stabilizing current source circuit is provided. The stabilizing current source circuit is used for stabilizing a current provided by a current source, and the current of the current source increases when temperature rises. The stabilizing current source circuit comprises a current source circuit and an adjustment circuit. The current... Agent: Joe Mckinney Muncy

20090045794 - Stabilizing methods for current source: A stabilizing method for a current source is provided. The current source is provided a current which increases when temperature rises. An adjustment circuit provides an input current increasing when temperature rises. A rising ratio of the input current with temperature is the same as a rising ratio of the... Agent: Joe Mckinney Muncy

20090045795 - Methodology and system to set jtag interface: A method and apparatus determines and sets operating voltage on a JTAG interface by incrementally increasing a test voltage applied thereto. The contents of a register is monitored to detect when the contents switch (change) from a first value to a second value. The voltage occurring at the switch is... Agent: Ibm Corporation

20090045796 - Semiconductor integrated circuit: A semiconductor integrated circuit can include a reference voltage pad that can be configured to receive an external reference voltage and supply the external reference voltage to the inside of the semiconductor integrated circuit, an internal reference voltage generator that can be configured to generate an internal reference voltage by... Agent: Baker & Mckenzie LLP Patent Department

20090039839 - Fuel cell power supply device: A fuel cell power supply device capable of externally supplying electric power in a stable manner is provided. The fuel cell power supply device includes a fuel cell (1), a capacitor (2) connected in parallel to the fuel cell, a voltage boosting means (3) having an input unit connected in... Agent: Squire, Sanders & Dempsey L.L.P.

20090039840 - Regulator and high voltage generator: A regulator included in a high voltage generator for supplying a high voltage to a semiconductor memory device is disclosed. The regulator includes a voltage dividing circuit configured to divide an output voltage of a charge pump, a comparing circuit configured to compare a reference voltage with a divided voltage... Agent: Townsend And Townsend And Crew, LLP

20090039841 - Controlling switching regulator for maintaining high efficiency for wide input voltage range: This disclosure relates to a voltage regulator system where duty cycle value of an input voltage is measured, where the input voltage is supplied to a regulator circuit that provides a regulated output voltage. Based on a calculated ideal duty cycle, which is derived from the measure duty cycle, a... Agent: Lee & Hayes, PLLC

20090039842 - Dc-dc converter: The invention provides DC-DC converters comprising a load sensor, a variable Power MOS, and a Power MOS width controlling and driving device. The Power MOS width controlling and driving device is coupled between the load sensor and the variable Power MOS. The variable Power MOS comprises a plurality of PMOS... Agent: Quintero Law Office, PC

20090039843 - Semiconductor circuit and switching power supply apparatus: To provide a power supply apparatus which realizes a high-speed response, a stable operation, and a low output ripple with low power consumption. The first stage switching regulator receives an input voltage and forms a first voltage. The second stage switching regulator receives the first voltage and forms a second... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20090039845 - Method and apparatus for power management of a low dropout regulator: A method of switching a low dropout regulator includes determining an actual active time of a power request from an electronic device; enabling the low dropout regulator in response to said power request at a time corresponding to a start of the actual active time of the power request for... Agent: Texas Instruments Incorporated

20090039844 - Power supply unit and portable device: A power supply unit, adapted to provide a predetermined output voltage from its output circuit, compares a feedback voltage associated with the output voltage of the output circuit with a reference voltage so as to control the output circuit. The power supply unit is enabled and disabled in response to... Agent: Rohm Co., Ltd. C/o Keating & Bennett, LLP

20090039846 - Semiconductor integrated circuit: In order to set with a high precision the value of rush current flowing in the power switch circuit at the time of turning “on” the power, the internal circuit Int_Cir of the LSI is supplied with the internal source voltage Vint from the output transistor MP1 of the regulator... Agent: Miles & Stockbridge PC

20090039847 - Output impedance compensation for linear voltage regulators: In a method and system for regulating an output voltage, a linear voltage regulator (LVR) includes an adjustable shunt regulator (ASR) having a limited gain, a feedback circuit (FC), and a compensation resistor (CR). The limited gain causes the output voltage of the ASR to change in response to a... Agent: Texas Instruments Incorporated

20090039848 - Systems and methods for on-chip power management: A power measurement system is disclosed for use on an integrated circuit for measuring the power used by the integrated circuit. The power measurement system includes a low-dropout voltage regulator and a signal input unit. The low-dropout voltage regulator includes a power transistor that couples a supply voltage to a... Agent: Gauthier & Connors, LLP

20090039849 - Ultra low dropout voltage regulator: An ultra low dropout voltage regulator, which separately supplies operating power for internal circuits, but controls the operating power to perform the operation of a voltage regulator chip, so that an ultra low dropout voltage regulator can be designed to reduce standby power consumption and to minimize the size of... Agent: Drinker Biddle & Reath LLP Attn: Patent Docket Dept.

20090039850 - Control device of a switching converter and relative switching converter: A control device for a switching converter having an input terminal and an output terminal, a half-bridge of a first and a second transistor coupled between the input terminal and a reference voltage the control device including a first circuit structured to detect signal on the output terminal of the... Agent: Seed Intellectual Property Law Group PLLC

20090039852 - Digital average input current control in power converter: A digital average-input current-mode control loop for a DC/DC power converter. The power converter may be, for example, a buck converter, boost converter, or cascaded buck-boost converter. The purpose of the proposed control loop is to set the average converter input current to the requested current. Controlling the average input... Agent: Nixon Peabody, LLP

20090039851 - Switching control circuit: A switching control circuit comprises: an error amplifying circuit configured to output an error voltage obtained by amplifying an error between a feedback voltage corresponding to an output voltage and a lower voltage selected out of a first reference voltage increasing with time passage and a second reference voltage used... Agent: SocalIPLaw Group LLP

20090039853 - Power supply device and electronic appliance provided therewith: A power supply device has an error amplifier producing an error voltage by amplifying a difference between a feedback voltage according to an output voltage and a predetermined reference voltage, an output portion producing a desired output voltage from an input voltage in such a way that the error voltage... Agent: Fish & Richardson P.C.

20090039857 - Driver with control interface facilitating use of the driver with varied dc-to-dc converter circuits: A driver for a DC-to-DC converter that may utilize a flyback or buck-boost converter circuit. The driver includes a driver circuit and an interface circuit. The interface circuit has a sensor sensing an input voltage from a DC supply and generating a sensor signal to a driver selector. The driver... Agent: Stmicroelectronics, Inc.

20090039854 - Load control device having a gate current sensing circuit: A gate drive circuit for a controllably conductive device, such as a triac, includes a trigger circuit for conducting a gate current through a control input of the controllably conductive device, and a sense circuit operable to generate a control signal representative of the magnitude of the gate current. The... Agent: Ostrolenk Faber Gerb & Soffen

20090039855 - Scientific method to accurately regulate point of load power distribution using remote sense connection point switchover: A power regulation system for providing a regulated voltage to a load is provided. The system includes an energy source or a power source and a switching device. The switching device switches a sensing voltage input of the energy source between a voltage input of a power-line controller and a... Agent: Utstarcom, Inc.

20090039856 - Stability enhancement apparatus and method for a self-clocking pwm buck converter: A DCR detecting circuit is parallel connected to the inductor of a self-clocking PWM buck converter which performs a trigger control of a PWM signal by an output feedback, to detect the current signal on the inductor to provide a large enough ripple to be combined into the output feedback,... Agent: Rosenberg, Klein & Lee

20090039858 - Direct current power supply device: A direct-current power supply apparatus outputs a predetermined output voltage by lowering an input voltage. The apparatus includes a control element to which the input voltage is inputted, a first resistive element, provided in series with the control element, which outputs the output voltage, and second and third resistive elements,... Agent: Cantor Colburn, LLP

20090039859 - Integrated circuit and electronic apparatus: An integrated circuit includes a trigger signal generating unit configured to generate a trigger signal for setting a control unit connected thereto in a reset state, an input unit configured to input a DC voltage of a predetermined voltage value, a pulse signal generating unit configured to generate and output... Agent: Canon U.s.a. Inc. Intellectual Property Division

20090039860 - Led drive circuit: An LED driving circuit can improve characteristics. A first current increasing circuit 10i4 is constituted of a first slow regulating unit 10i41 and a post-stage first supplying circuit 10i43 and, from a point in time of output switching of a first comparator 10i2, that is, when a set temperature exceeding... Agent: Drinker Biddle & Reath (dc)

20090039861 - Reference voltage generator providing a temperature-compensated output voltage: The present invention concerns a reference voltage generator (40) that provides a reference voltage (Vref new). The voltage generator (30) is operated at a supply voltage (Vdd) being lower than the Silicon bandgap voltage. It comprises a MOSFET transistor (MN; MN3; MP4; MP7) serving as transconductor (Gptat). An input node... Agent: Seed Intellectual Property Law Group PLLC

20090039862 - Voltage transformation circuit: A voltage transformation circuit comprising a first input, a second input, a first output, first and second impedances and a current mirror having master and slave terminals, wherein the first impedance is connected between the first input and the master terminal of the current mirror, the second impedance is connected... Agent: Wolf Greenfield & Sacks, P.C.

20090033296 - Device, method, and system for improving electrical power factor and harmonic power quality through active control of power quality improving electrical appliances: A system, method and device for controlling and modifying the current drawn by an electrical load in a way that will improve the electrical power factor and harmonic quality of at least a portion of an electrical power system. In one embodiment of the invention, the invention includes a controller... Agent: Battelle Memorial Institute Attn:IPServices, K1-53

20090033297 - Single-board power supply structure and method for providing power supply: A single-board power supply structure and a method for providing a power supply are provided. An operational processor sends control signals capable of controlling the output of the power supply to a DC/DC converter. The DC/DC converter converts a received bus voltage into a required power supply voltage according to... Agent: Darby & Darby P.C.

20090033298 - Voltage regulator with a hybrid control loop: A voltage regulator circuit and method are provided for regulating a voltage accurately in response to rapid variations in the regulator's load. The voltage regulator utilizes a hybrid loop; an embodiment of such utilization is exemplified by circuit 300. Amplifier 301 controls the current flowing through pass element 303 from... Agent: The Mueller Law Office, P.C.

20090033300 - Output control device, and ac/dc power source device, circuit device, led backlight circuit device, and switching dc/dc converter device each using output control device: In one embodiment of the present invention, an output control device is disclosed capable of reducing a chip size and realizing a low cost. An output control device includes a switching transistor controlling an output voltage by having an on/off time ratio controlled and a control IC controlling the on/off... Agent: Harness, Dickey & Pierce, P.L.C

20090033301 - Power electronics devices with integrated gate drive circuitry: A power switch apparatus includes a substrate; a semiconductor die mounted on the substrate and including power electronics circuitry for a high power, alternating current motor application; and gate drive circuitry mounted on the substrate and electrically coupled to the power electronics circuitry on the semiconductor die.... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090033299 - Step-down type switching regulator, control circuit thereof, and electronic device using the same: A pulse signal generating circuit generates a pulse signal having a duty ratio controlled such that the output voltage approaches a reference voltage. A driver circuit generates first and second gate voltages, which are to be respectively applied to the gates of a switching transistor and a synchronous rectifier transistor,... Agent: Cantor Colburn, LLP

20090033303 - Piezoelectric transformer type high-voltage power apparatus and image forming apparatus: A piezoelectric transformer type high-voltage power source apparatus to control an output voltage from a piezoelectric transformer to a load, and an image forming apparatus including the same, the piezoelectric transformer type high-voltage power source apparatus including: an output voltage detection unit to compare the output voltage with an output... Agent: Stein, Mcewen & Bui, LLP

20090033302 - Voltage conversion device: When a voltage conversion operation is started, a control circuit (30) performs an operation to obtain a voltage command value for each control timing with setting a target voltage obtained based on a torque command value (TR) and a motor rotation number (MRN) as a final value, and controls a... Agent: Oliff & Berridge, PLC

20090033304 - Low-loss control of dc-dc converters in an energy storage system: An energy storage system including a buck-boost DC-DC converter operable so as to minimize switching loses. The system includes a first energy storage device, e.g., a bank of ultracapacitors, and a second energy storage device, e.g., a second bank of electrolytic capacitors. Both first and second energy storage devices are... Agent: Downs Rachlin Martin PLLC

20090033305 - Pwm/pfm control circuit and switching power supply circuit: A PWM/PFM control circuit has a differential time generating means for forming a differential time signal representing a differential time corresponding to a difference between the pulse width of a PWM control signal and the pulse width of a PFM control signal on condition that the pulse width of the... Agent: The Webb Law Firm, P.C.

20090033307 - Method and apparatus for a high voltage power supply circuit: A control circuit for use in a power supply is disclosed. An example control circuit according to aspects of the present invention includes a signal generator coupled to generate an output signal to control switching of a power switch to be coupled to the control circuit. A feedback circuit is... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090033306 - Voltage trimming: Embodiments are provided that include a memory die, memory devices, and methods, such as those comprising a voltage generator, including an output voltage and an adjustment circuit configured to cause adjustment of the output voltage based on a latch signal. Further one such method includes applying an input voltage to... Agent: Michael G. Fletcher

20090033308 - Component reliability budgeting system: A system may include acquisition of a supply voltage information representing past supply voltages supplied to an electrical component, acquisition of a temperature information representing past temperatures of the electrical component, and control of a performance characteristic of the electrical component based on the supply voltage information and the temperature... Agent: Buckley, Maschoff & Talwalkar LLC

20090033309 - Reconfigurable topology for switching and linear voltage regulators: A configurable voltage regulator (28; 128) operable in either of two selectable modes or topologies is disclosed. In one disclosed embodiment, the voltage regulator (28) can operate as a linear regulator or a switching regulator. A gate driver (35) and an error amplifier (36) is used in each mode. Configuration... Agent: Texas Instruments Incorporated

20090033310 - Voltage regulator: A voltage regulator. A pass element has a control gate and outputs an output voltage according to an input voltage and a control signal received from the control gate. A feedback circuit generates a feedback signal according to the output voltage. A bandgap circuit generates a reference voltage according to... Agent: Quintero Law Office, PC

20090033311 - Current source with power supply voltage variation compensation: A multipath current source has separate reference current, control current and output current paths. Voltages in the reference current and control current paths are monitored. Any differences between those two voltages are fed to the gates of current control devices in the reference, control and output current paths to maintain... Agent: International Business Machines Corporation