Electricity: power supply or regulation systems inventions 02/08

20080048625 - System and method for interleaving point-of-load regulators: A system and method for providing interleaving point-of-load (POL) regulators such that each regulator's switching cycle is phase displaced with respect to those of other POL regulators in the array is disclosed. As a result, the aggregate input and/or output reflected ripple and noise of the input, output, or both... Agent: O'melveny & Myers LLP Ip&t Calendar Department La-1118

20080048627 - Regulator circuit and integrated circuit device: A regulator circuit for generating a regulation voltage obtained by stepping down a power supply voltage includes a plurality of voltage generation circuits that each generate a reference voltage; a differential amplifier circuit to whose first input terminal a reference voltage generated by one of the voltage generation circuits is... Agent: Harness, Dickey & Pierce, P.L.C

20080048626 - Series regulator circuit: A series regulator circuit for supplying voltage with low current consumption without depending on the capacitance of a load. A constant current source, which is connected to an input voltage line, is connected to a ground voltage line via a bipolar transistor. The gate terminals of first and second n-channel... Agent: Freescale Semiconductor, Inc. Law Department

20080048628 - Voltage converter and a method of using the same: Example embodiments relate to a voltage converter having a power switching unit, an analog-digital converting (ADC) unit, a digital low pass filter (LPF), an error value (EV) calculator, and a switching signal generator. The power switching unit may generate an output voltage by switching between an output terminal and one... Agent: Lee & Morse, P.C.

20080048629 - Voltage regulator: Provided is a voltage regulator in which a rush current of an output circuit can be limited and a rise time of an output voltage is short. The voltage regulator includes a first output current limiting circuit and a second output current limiting circuit which are used to control the... Agent: Brinks Hofer Gilson & Lione

20080048630 - Switching power supply circuit: A trigger-type signal Ve having the same period as that of a reference pulse signal Vp outputted from a reference pulse generation circuit is inputted to a set terminal of a logic circuit and a signal Vg having a polarity opposite to that of the signal Ve is inputted to... Agent: Harness, Dickey & Pierce, P.L.C

20080048631 - Automatic external switch detection in synchronous switching regulator controller: A synchronous switching regulator controller incorporates a switch detection circuit to determine the presence or absence of a power switch at the output of a switch driver so that the switch driver can be disabled when it is left unused. In one embodiment, the synchronous controller includes a switch detection... Agent: Patent Law Group LLP

20080048632 - High frequency power supply: A high frequency power supply includes a DC source unit (19) that outputs a DC voltage Vdc having an output level corresponding to a target voltage, an oscillation unit (13) that outputs a high frequency voltage signal having an output level corresponding to a target power, an amplification unit (14)... Agent: Hamre, Schumann, Mueller & Larson, P.C.

20080048633 - Detection circuit to detect input voltage of transformer and detecting method for the same: A circuit and a method for detecting a voltage of a transformer are provided. The circuit includes a current output circuit coupled to a winding of a transformer to generate a current signal. A current-to-voltage circuit is coupled to the current output circuit to generate a voltage signal in response... Agent: J C Patents, Inc.

20080048634 - Reference circuit: A reference circuit comprises a first current generator comprising a first transistor operably coupled to a second transistor and having respective base current corresponding to a positive temperature dependence of the reference circuit. A resistance is operably coupled to the first current generator and arranged to provide a second current... Agent: Freescale Semiconductor, Inc. Law Department

20080042627 - Voltage feedback circuit for liquid crystal display backlight inverter: A voltage feedback circuit for a liquid crystal display backlight inverter including a plurality of first and second transformers driven oppositely to each other, the voltage feedback circuit including: a first voltage detector detecting a first drive voltage from a first transformer; a second voltage detector detecting a second drive... Agent: Mcdermott Will & Emery LLP

20080042628 - Method for driving voltage-controlled devices or current-controlled devices: The present invention discloses a multifunctional driver controller capable to drive one or more voltage-controlled devices or current-controlled devices. According to one embodiment, the multifunctional driver controller comprises a selection unit receiving a control signal, one of a first reference voltage and a second reference voltage, the selection unit selecting... Agent: Silicon Valley Patent Agency

20080042629 - Current source: A current source comprises a current driver comprising a current generator and a first resistor serially coupled at a first node, a level shift unit located between the first node and a second node to generate a rated voltage difference between the second and the first nodes, and a voltage... Agent: Birch Stewart Kolasch & Birch

20080042630 - Power supply device and projection apparatus using the same: A projection apparatus comprises a projection control unit, power supply device and fan. The projection control unit generates an image beam. The power supply device comprises a filter and voltage driving unit. The voltage driving unit is coupled to the filter and comprises a voltage-regulation feedback unit and current amplification... Agent: Bacon & Thomas, PLLC

20080042631 - Switching power supply: A switching power supply includes an amplitude control circuit (30) connected between an alternating current (AC) source (10) and a traditional switching power supply (20). The amplitude control circuit includes a power switch (31) and a pulse generator (32). The power switch is connected between the AC source and the... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang Jeffrey T. Knapp

20080042632 - Self tracking adc for digital power supply control systems: A self-tracking analog-to-digital converter includes a digital-to-analog converter (DAC) adapted to provide a variable reference voltage, a windowed flash analog-to-digital converter (ADC) adapted to provide an error signal ek corresponding to a difference between an input voltage Vi and the variable reference voltage, and digital circuitry adapted to generate suitable... Agent: O'melveny & Myers LLP Ip&t Calendar Department La-1118

20080042634 - Double-edge, stackable pwm with built-in feedforward: A method and apparatus for use in a multi-phase power system. The power system is of the type having a plurality of Pulse Width Modulation (PWM) controllers including a first PWM controller and at least one second PWM controller. The first PWM controller generates at least one first PWM output... Agent: Texas Instruments Incorporated

20080042633 - Power converter with hysteretic control: According to an embodiment of the present invention, a method is provided for hysteretic control of a DC-to-DC power converter system having first and second switches connected in a half-bridge arrangement at a common node and through an inductor to a regulated output terminal, wherein the regulated output terminal is... Agent: Sidley Austin LLP

20080042635 - Voltage regulator: A voltage regulator 10 includes: a level shifting circuit unit 14 shifting a first voltage, which is a voltage level of a first power source 12, to a target value of a second voltage to output the shifted first voltage; a voltage-to-current converting circuit unit 20 varying a magnitude of... Agent: Osha Liang L.L.P.

20080036430 - Apparatus and method for controlling a power converter device: An apparatus for controlling a power converter operating in response to a modulating signal during successive switching cycles includes: (a) A signal sensor coupled with the converter and sensing an extant signal during the extant cycle. (b) A signal level predictor coupled for receiving a reference signal and establishing a... Agent: Texas Instruments Incorporated

20080036432 - Power supply device: A power supply device, comprising first and second lead terminals for connection with a load, a fuel cell, an energy storage element connected between the first and second lead terminals, a synchronous-rectification switching power-source portion for converting the output voltage of the fuel cell to the output voltage of the... Agent: Mcdermott Will & Emery LLP

20080036431 - Voltage regulator having overvoltage protection: A voltage regulator having overvoltage protection is described, which is situated in a vehicle electrical system between the generator that is situated in a first voltage level and a battery that is situated in a second voltage level. A generator is used, in this instance, as a generator whose control... Agent: Kenyon & Kenyon LLP

20080036433 - Voltage converting apparatus with auto-adjusting boost multiple: This present invention relates to a voltage converting apparatus with auto-adjusting boost-multiple, which includes a microprocessor unit, a boost multiple control unit, a boost unit, and a voltage converting unit. According to the digital signal, the microprocessor unit generates an output voltage information and a converting multiple information. According to... Agent: Jianq Chyun Intellectual Property Office

20080036435 - Phase control device for dc/dc converter: A phase control device for use with a voltage-boosting DC/DC converter includes a current sensor for detecting a current flowing through at least one of the primary and secondary windings of a transformer of the DC/DC converter, a ripple determining section for, on the basis of a current signal detected... Agent: Birch Stewart Kolasch & Birch

20080036434 - Semiconductor integrated circuit: A semiconductor integrated circuit includes a first circuit block which operates at a first internal voltage, a second circuit block which operates at a second internal voltage, is connected to an output stage of the first circuit block, and receives a signal from the first circuit block, and a voltage... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080036437 - Multiple output stage converter and operating method thereof: A multiple output stage converter (MOSC) and an operating method thereof are provided. The MOSC includes a first transistor, a second transistor, a third transistor, and a logic control module. A terminal of the first transistor, a terminal of the second transistor, and a terminal of the third transistor are... Agent: Jianq Chyun Intellectual Property Office

20080036436 - Voltage regulator and voltage regulation method: A voltage regulator has a device for regulating an output voltage, having an input to receive an input voltage and an output to deliver an output voltage of a constant level, and a device for correcting a drop-out voltage violation, coupled to the device for regulating, to determine an occurrence... Agent: Coats & Bennett/infineon Technologies

20080036438 - Switching regulator: A switching regulator for inputting a power source, supplying output power to an external circuit, and adjusting the output voltage to a target voltage, the switching regulator has a switching regulator circuit having first and second transistors, a feedback circuit that receives the output voltage, and outputs a control pulse... Agent: Oliff & Berridge, PLC

20080036439 - Apparatus to prevent overheating of a print head, and a method thereof: An apparatus to prevent overheating of a print head. The apparatus includes a temperature sensing unit, a voltage dividing unit, and a comparing unit. The temperature sensing unit includes a first resistor having a low temperature coefficient of resistance (TCR) and a second resistor having a higher TCR than the... Agent: Stanzione & Kim, LLP

20080036440 - Systems and methods for providing maximum photovoltaic peak power tracking: A micropower Maximum Power Point Tracker (μMPPT) suitable for use in low power applications to maximize the power output for a solar-power cell array. In one embodiment, a μMPPT comprises an electrical circuit which includes a microprocessor/microcontroller used to execute the μMPPT control algorithm, and a modulator controller to control... Agent: Crowell & Moring LLP Intellectual Property Group

20080036441 - Voltage regulating circuit having voltage stabilizing circuits: An exemplary voltage regulating circuit (20) includes a voltage modulating unit (22, 24) and a voltage-dividing unit (26). The voltage-dividing unit includes a voltage divider (27) and at least one voltage stabilizing circuit (28) electrically coupled to the voltage divider. The voltage modulating unit transforms an input voltage to an... Agent: Wei Te Chung Foxconn International, Inc.

20080036442 - Constant-current circuit and system power source using this constant-current circuit: A constant-current circuit and a system power source using this constant-current circuit are disclosed, which can generate plural highly accurate constant currents and supply them as bias currents by reducing variations caused by a change of a manufacturing process and a change of temperature. An operational amplification circuit AMP controls... Agent: Dickstein Shapiro LLP

20080036443 - Synchronous rectification switching regulator, and control circuit and control method therefor: A synchronous rectification switching regulator, and a control circuit and a control method for controlling the synchronous rectification switching regulator. The regulator includes an output terminal, a first switching device, an inductor, a second switching device for synchronous rectification, a control circuit unit to control switching of the first switching... Agent: Dickstein Shapiro LLP

20080030173 - Switching power supply unit: A step-up switching power supply unit for generating a predetermined output voltage through a feedback control of its output voltage based on a first detection voltage indicative of the output voltage. The power supply unit is adapted to monitor a second detection voltage associated with the output voltage that is... Agent: Hogan & Hartson L.L.P.

20080030174 - Load driving circuit and protection method: A load driving circuit includes a first transistor and a second transistor that are bipolar transistors connected in series between a first fixed voltage (Vdd) and a second fixed voltage (GND), and supplies a drive current, according to ON-OFF states of the two transistors, to a load connected to an... Agent: Cantor Colburn, LLP

20080030175 - Multi-function voltage regulator: A multi-function voltage regulator for both DCDC function and LDO function includes a first transistor, a second transistor and a voltage control unit. The first transistor has a first terminal and a second terminal respectively connected to a first node and a second node. The second transistor has a first... Agent: Birch Stewart Kolasch & Birch

20080030176 - Power array system and method: A method of controlling deadtime between power switches in an output regulator includes providing at least two power switches having a common node, wherein at least one of the two power switches is a conducting switch and a remainder of the two power switches is a free-wheeling switch, switching one... Agent: Harness, Dickey & Pierce P.L.C

20080030178 - Circuits and methods for adjustable peak inductor current and hysteresis for burst mode in switching regulators: Switching regulator circuits and methods are provided for regulating output voltage that include an adjustable minimum peak inductor current level and adjustable burst comparator hysteresis for Burst Mode operation in switching regulators. Control over minimum peak inductor current level and burst comparator hysteresis is achieved during Burst Mode operation by... Agent: Mcdermott Will & Emery LLP

20080030177 - Soft-start circuit of linear voltage regulator and method thereof: A voltage regulator circuit for providing a substantially constant output voltage is disclosed. The voltage regulator circuit has a voltage regulator, a current sensing and comparing circuit, a capacitive load circuit, and a control circuit. The voltage regulator generates an output current in response to a control signal to provide... Agent: North America Intellectual Property Corporation

20080030179 - Voltage regulator: A voltage regulator including a voltage regulation unit and an over driving unit is provided. The voltage regulation unit outputs a corresponding output voltage according to an input voltage. The over driving unit is coupled between an input terminal and an output terminal of the voltage regulation unit and regulates... Agent: Jianq Chyun Intellectual Property Office

20080030181 - Control circuit and method for a constant on-time pwm switching converter: A control circuit provides a control signal for a constant on-time PWM switching converter to produce an output voltage, such that the converter operates with a constant on-time at a first state and operates with a variable on-time at a second state, so as to decrease the switching frequency and... Agent: Rosenberg, Klein & Lee

20080030182 - Power array system and method: A digital controller that controls an output regulator includes controller sub-blocks that perform sub-functions of the digital controller, wherein at least one of the controller sub-blocks includes at least one of a delay line and a first comparator. A controller monitors output power states of the output regulator and controls... Agent: Harness, Dickey & Pierce P.L.C

20080030180 - Switching regulator: A switching regulator is configured as a fixed-voltage regulator and contains a voltage divider. The voltage divider is supplied with a voltage signal available from a regulator output via a first connection. The voltage divider feds an output signal to the driver circuit functioning as a regulating variable that is... Agent: Lerner Greenberg Stemer LLP

20080030183 - Method of feedback controlling a switched regulator: A method of feedback controls a switched regulator generating a regulated voltage on an output terminal and being driven by a pulse width modulated (PWM) signal that determines on-phases during which the output terminal is selectively connected to a supply line, and off-phases during which the output terminal is disconnected... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20080030184 - System for smoothing output voltage or power generator: In a system, an output voltage of a power generator is input to a filter circuit. The filter circuit includes a first capacitor having opposing first and second electrodes, a second capacitor having opposing third and fourth electrodes, a first switch electrically connected to be series with the third electrode... Agent: Oliff & Berridge, PLC

20080030185 - Reporting power requirements of a powered device: In one embodiment, a powered device is configured to determine module population and the appropriate power requirements for installed modules. The power requirements can be communicated to the power sourcing equipment for the powered device. Optionally, the powered device can receive data representative of available power from the power sourcing... Agent: Tucker Ellis & West LLP