Electricity: power supply or regulation systems inventions 09/08

20080231241 - Transformers: A multi-transformer unit is operative for converting an input AC voltage at a first voltage level to a net output AC voltage at a second voltage level. The multi-transformer unit can be used in place of a conventional transformer or an AC machine and is designed to suppress the transfer... Agent: Kirschstein, Ottinger, Israel & Schiffmiller, P.C.

20080231243 - Load independent voltage regulator: An integrated circuit package (202) includes a voltage regulator (208) and a power-out pin (236) for coupling to a load circuit (210) via a connection (234) external to the integrated circuit package and for coupling to an output (230) of the voltage regulator via a connection (224, 228, 226 and... Agent: Fleit, Kain, Gibbons, Gutman, Bongini & Bianco P.l

20080231242 - Multi-mode voltage supply circuit: A supply voltage is provided in an integrated circuit by retrieving an indicator from a storage device and generating a supply voltage for use by the integrated circuit, the supply voltage being regulated responsive to the indicator being in a first state and unregulated responsive to the indicator being in... Agent: Coats & Bennett/qimonda

20080231245 - Current source and control device: A current source contains a first switching element which is provided with a control input and is embodied and arranged in such a way that an output flow on an output side of a current source can be adjusted according to a control signal at the control input. The current... Agent: Lerner Greenberg Stemer LLP

20080231244 - Dc-dc converter: An overcurrent detection circuit (50 in FIG. 1) in a DC-DC converter is connected to a switching control circuit (1), and detects an inductor current flowing through an inductor (L) during the ON control of a switching element (Mn), so as to decide whether the inductor current has decreased down... Agent: Rabin & Berdo, PC

20080231246 - Current detection circuit, load drive circuit, and memory storage: A stable high-precision current detection circuit capable of continuously detecting load current through a load with extremely reduced power loss. The current detection circuit has a power transistor and a current detection transistor that are fed with a common power supply voltage and a common switching signal. A buffer circuit... Agent: Rohm Co., Ltd. C/o Keating & Bennett, LLP

20080231247 - Semiconductor device: To obtain a switching regulator which, when a load suddenly decreases, suppresses overshoot of output voltage without oscillating the output voltage is provided, even if being a current mode switching regulator, the present invention provides a semiconductor device for a switching regulator for converting input direct current voltage input from... Agent: Bruce L. Adams, Esq Adams & Wilks

20080231248 - Fast start-up circuit bandgap reference voltage generator: A bandgap voltage reference circuit includes a bandgap voltage generation circuit that can produce a bandgap reference voltage in response to an activation voltage signal, a start-up circuit that can produce the activation voltage signal in response to one-shot voltage pulse and an one-shot pulse generator circuit configured to produce... Agent: Xin Wen

20080231249 - Integrated circuit current reference: An IC current reference includes a reference voltage Vref, a current mirror, and a transistor connected between the mirror input and a first I/O pin and which is driven by Vref. A resistor external to the IC and having a resistance R1 is coupled to the first I/O pin such... Agent: Koppel, Patrick & Heybl

20080231250 - Method and assembly for supplying power to an active independent component: The invention relates to a method for supplying power to an independent active component and to assembly comprising a rolling bearing and an independent electronic system (8) comprising at least one active component, wherein said assembly comprises at least one area displaying the variations of at least one state during... Agent: Arent Fox LLP

20080231251 - Method for operational amplifier sharing between channels with algorithmic channel selection: A multi-channel current regulator includes two or more channels, each channel acting as a current source or sink for a respective load. Each channel regulates its load current so that the load current is proportional to an input voltage supplied to the channel. An operational amplifier is shared between the... Agent: Advanced Analogic Technologies

20080231252 - Sag-swell and outage generator for performance test of custom power devices: The sag-swell generator comprises: a supply voltage unit for providing a supply voltage; a variable voltage adjusting unit for controlling the supply voltage according to a voltage ratio; a variable voltage-side switch unit selectively connected to the variable voltage adjusting unit; a transformer-side switch unit composed of dual switches connected... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20080224672 - Dc/dc converter controlled by pulse width modulation with high efficiency for low output current: P

20080224673 - Circuit for starting up a synchronous step-up dc/dc converter and the method thereof: The low voltage circuit for starting up a synchronous step-up DC/DC converter, which connects to a voltage source through an inductor, includes a P-type power transistor, an N-type power transistor and a controller. The P-type power transistor includes a body diode, and one end of the P-type power transistor acts... Agent: Oliff & Berridge, PLC

20080224674 - Dc-dc converter and power supply system: A DC-DC converter prevents localization of switching operations at light loads and is able to improve power conversion efficiency. The DC-DC converter of some variations performs pulse frequency modulation control at light loads, and includes a reducing circuit configured to skip an oscillation frequency signal at light loads and to... Agent: Arent Fox LLP

20080224675 - Voltage regulator and voltage regulation method: A voltage regulator converts a voltage from a direct current power supply into a predetermined voltage, and outputs the predetermined voltage from an output terminal thereof to supply electric power to a load. The voltage regulator includes a first power supply circuit and a second power supply circuit. The first... Agent: Dickstein Shapiro LLP

20080224677 - Dead time trimming in a co-package device: A method of obtaining an optimized dead time for a synchronous switching power supply comprising a control IC and two series-connected switches, comprising packaging the control IC and the series-connected switches in a co-packaged module; providing a dead time delay circuit within the control IC circuit which has variable dead... Agent: Ostrolenk Faber Gerb & Soffen

20080224676 - Voltage clamp circuit, a switching power supply device, a semiconductor integrated circuit device, and a voltage level conversion circuit: The present invention provides a voltage clamping circuit which is operated in a stable manner with the simple constitution and a switching power source device which enables a high-speed operation. In a switching power source device, one of source/drain routes is connected to an input terminal to which an input... Agent: Miles & Stockbridge PC

20080224678 - Switching power supply controller with high frequency current balance: A controller for a multi-phase switching power supply shuffles the sequence of the phases in response to a load transient to prevent synchronization of one or more phases with high-frequency load transients. The sequence may be shuffled by varying the frequency and/or sequence of the switching control signals to introduce... Agent: Semiconductor Components Industries, LLC Intellectual Property Dept. - A700

20080224679 - Regulator with improved load regulation: A regulator to provide an output voltage of a constant level at an output node. In an embodiment, the regulator contains a pass transistor to provide a conductive path between a pair of terminals, with the resistance offered by the path being determined by a control voltage on a third... Agent: Texas Instruments Incorporated

20080224680 - Voltage regulator: To enhance a safety of a voltage regulator, provided is a control circuit (22), which controls the PMOS (1) to be turned on and operates so as to increase the output voltage (VOUT) when the output voltage (VOUT) drops transiently due to rapid fluctuations of a load (RL) connected to... Agent: Bruce L. Adams, Esq Adams & Wilks

20080224681 - Controller for a dc to dc converter: A controller for a DC to DC converter. The controller may include a resistor coupled to a switching node of the DC to DC converter. The switching node may be coupled to a high side switch and a low side switch of the DC to DC converter. A current level... Agent: Grossman, Tucker, Perreault & Pfleger, PLLC

20080224682 - Voltage reference circuit: A reliable start-up circuit for starting a bandgap type voltage reference generator which ensures that the bandgap reference cell will operate at a stable operating point before the start-up circuit is disabled.... Agent: Dickstein Shapiro LLP

20080224683 - Control system for dynamically adjusting output voltage of voltage converter: A control system for dynamically adjusting an output voltage of a voltage converter includes a signal calculation circuit, a pulse width modulator, a voltage converter, a nonlinear calibration circuit and a signal converter. The signal calculation circuit, the pulse width modulator, the voltage converter and the signal converter form a... Agent: Egbert Law Offices

20080224684 - Device and method for compensating for voltage drops: A device that includes a voltage supply unit and an integrated circuit, the device is characterized by including a voltage sampling circuit adapted to sample voltage levels at multiple sampling points within the integrated circuit, to provide multiple sampled voltages, wherein the multiple sampled voltages reflect the voltage drops; and... Agent: Freescale Semiconductor, Inc. Law Department

20080224685 - Method and apparatus to manage power consumption of a semiconductor device: Briefly, a method an apparatus of a power management system of a semiconductor device capable of managing a power consumption of the semiconductor device by varying an operating voltage of the semiconductor device according to a voltage value based on a reference number.... Agent: Schwabe, Williamson & Wyatt, P.C.

20080218133 - Signal generating apparatus and method thereof: The present invention discloses a signal generating apparatus for generating a clock signal, the signal generating apparatus includes: an adjusting module for generating an adjusting current according to a first reference voltage and a control voltage; and a clock signal generating module coupled to the adjusting module. The clock signal... Agent: North America Intellectual Property Corporation

20080218134 - Power supply apparatus: A power supply apparatus having a soft start function that enables a startup without any overshoot within an appropriate startup time regardless of whether the load is heavy or light. Even when output direct current voltage Vo has not yet risen upon startup, switch circuit 4 is turned ON within... Agent: Greenblum & Bernstein, P.L.C

20080218135 - Voltage supplying device and an image display device: To provide a voltage supplying device and an image display device, which can bring a voltage on a line to be supplied with voltage (e.g. source line) to a substantially desired voltage. A voltage supplying device comprising a source line (L12), a source line (L13) adjacent to the source line... Agent: Liu & Liu

20080218136 - Power supply circuit: A disclosed power supply circuit (1) for receiving an input voltage at an input terminal (VDD), converting the input voltage to an output voltage and outputting the output voltage to a load (10) connected to an output terminal (OUT), comprises: a power supply circuit unit (2) for converting the input... Agent: Dickstein Shapiro LLP

20080218137 - Technique for improving efficiency of a linear voltage regulator: A linear voltage regulator includes a first transistor, a feedback circuit, and a control circuit. The first transistor includes a first terminal coupled to an input terminal of the regulator, a second terminal coupled to an output terminal of the regulator, and a control terminal. The first transistor is configured... Agent: Samuel S. H. Wang

20080218138 - Method and apparatus for reducing audio noise in a switching regulator: A switching regulator utilizing on/off control that reduces audio noise at light loads by adjusting the current limit of the switching regulator. In one embodiment, a switching regulator includes a state machine that adjusts the current limit of the switching regulator based on a pattern of feedback signal values from... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080218139 - Voltage regulator circuit and control method therefor: A voltage regulator circuit and control method therefor. The circuit includes input and output terminals, an output transistor to pass a current from the input terminal to the output terminal according to a control signal, a reference voltage generator unit to generate and output a reference voltage, an output voltage... Agent: Dickstein Shapiro LLP

20080218141 - Circuit for charging a bootstrap capacitor in a voltage converter: For charging a bootstrap capacitor in a voltage converter, a circuit is provided for wider bandwidth to eliminate the feedback stability issue and pin out for compensation circuit. A pair of transistors are connected in series between a power input and the bootstrap capacitor, the first transistor is switched synchronously... Agent: Rosenberg, Klein & Lee

20080218140 - Control apparatus for cooler: The present invention discloses a control apparatus, which integrates the methods of PWM signal controlling and manual voltage regulating for controlling the cooler. The control apparatus includes a voltage stabilizer, a voltage regulator, and a switching unit. The voltage stabilizer connects to a CPU of a motherboard for receiving a... Agent: Rosenberg, Klein & Lee

20080218142 - Current detector circuit and current mode switching regulator: A current detector circuit is completely formed of CMOS transistors, and is simplified in process, and can be reduced in the chip size. The current detector circuit of the present invention generates a sense voltage that corrects a voltage for slope compensation according to a coil current in a current... Agent: Bruce L. Adams, Esq Adams & Wilks

20080218143 - Method and apparatus to provide temporary peak power from a switching regulator: Various techniques directed to providing temporary peak power from a switching regulator are disclosed. In one aspect, a switching regulator includes a switch that is to be coupled between a power supply input and an energy transfer element of the power supply. A controller is coupled to be responsive to... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080218144 - On-off-valve: A power-supply apparatus for outputting from an output terminal via one or more switching elements, each having a control electrode, a voltage input to an input terminal, is disclosed. The apparatus includes a voltage-generating circuit for generating an output voltage Vo proportional to a voltage between an input end and... Agent: Cooper & Dunham, LLP

20080218145 - Current-mode dc-to-dc-converter: A current-mode DC-to-DC converter operating in a high frequency is disclosed. The current-mode DC-to-DC converter includes an inductor, a power switch, an oscillator, an adder without internal feedback loop, an error amplifier, a comparator, a compensation unit and a driver. The adder adds a ramp signal from the oscillator directly... Agent: Wang Law Firm, Inc.

20080218146 - Method and apparatus for transferring energy in a power converter circuit: A reduced cost energy transfer element for power converter circuits. In one embodiment, an energy transfer element according to an embodiment of the present invention includes a magnetic element having an external surface with at least a first winding and a second winding wound around the external surface of the... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080218147 - Voltage regulator: r

20080218148 - Intelligent power control: The Power Control Device can communicate with connected load or appliance for identification and control, and Intelligent Power Control. The Power Control combines Triac (or similar technology) function with Relay (or similar technology) function in a single intelligent current and temperature sensing multipurpose Dual Mode device. This combination of modes... Agent: Mark L. Robertson

20080218149 - Display device: The present invention is intended to minimize an amount of charge that flows from a step-up circuit into an external input voltage terminal when the power supply is turned off. A display device includes a display panel and a drive circuit that drives pixels included in the display panel. The... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080218150 - Method and device for supply to a magnetic coupler: The invention relates to a method for supply to a magnetic coupler comprising several pairs of windings, each pair being formed from a first and a second adjacent paired winding, magnetically coupled to each other by means of a core of magnetic material. The method further consists of supplying (in... Agent: Young & Thompson

20080211462 - Method and apparatus for active power factor correction: A power factor correction method and apparatus which use Pulse Frequency Modulation (PFM) to control an AC/DC converter is disclosed. The average current drawn by the AC/DC converter is compared with a reference sinusoidal signal and the error is used to determine the switching frequency. The switching frequency varies with... Agent: Shek-wai Ng

20080211463 - Method and apparatus for active power factor correction without sensing the line voltage: A power factor correction apparatus which uses Pulse Frequency Modulation (PFM) to control an AC/DC converter is disclosed. Only a current signal from the converter is used to determine the switching frequency. Sensing of the input line voltage is not needed. The switching frequency varies with the line voltage such... Agent: Shek-wai Ng

20080211464 - Systems of parallel operating power electronic converters: A converter unit is disclosed which produces an output voltage based on reference signals (u*d, u*q) that are generated from active and reactive components (P, Q) of the converter's output power. A first reference signal for a reactive component of the output voltage (u*q) is set to zero, thus regulating... Agent: Buchanan, Ingersoll & Rooney PC

20080211465 - Soft-stop circuit and method for a voltage regulator: A soft-stop circuit and method are provided for a voltage regulator which converts a battery voltage to an output voltage according to a feedback voltage derived from the output voltage and a reference voltage, to control the voltage regulator to enter a soft-stop state when the battery voltage is lower... Agent: Rosenberg, Klein & Lee

20080211466 - Voltage generators implementing boosting schemes for generating boosting voltages and related liquid crystal displays (lcds) and methods: A voltage generators is provided including a boosting circuit and a boosting control circuit. The boosting circuit is configured to boost a power voltage to generate first through fourth voltages. The boosting control circuit is configured to control the boosting circuit to enable the first through fourth voltages to be... Agent: Myers Bigel Sibley & Sajovec

20080211467 - Method and circuit for reducing switching ringing in switching regulator: The present invention discloses a method and a circuit for reducing switching ringing in a switching regulator. The switching regulator comprises two transistors, and the two transistors are never simultaneously OFF. A phase lock loop may be provided to fix the output signal frequency of a PWM control circuit to... Agent: Tung & Associates Suite 120

20080211468 - Method and apparatus for supplying power: A power supply includes a power source having at least one power source output, and a plurality of drivers connected to the at least one power source output. At least one of the plurality of drivers includes a bridge network having a first switch, a second switch and a bridge... Agent: Klaas, Law, O''meara & Malkin, P.C.

20080211470 - Auto discharge linear regulator and method for the same: The present invention discloses an auto discharge linear regulator comprising: a basic linear regulator for converting an input voltage to an output voltage at an output node; a load detector circuit for detecting the load condition at the output node; and an discharge control circuit under control by the load... Agent: Tung & Associates / Randy W. Tung, Esq.

20080211469 - Step-down circuit: A step-down circuit generates a second power supply lower than a first power supply. The step-down circuit includes an output terminal connected to a load circuit, an output transistor connected between the first power supply and the output terminal, and having a gate terminal connected to a first node, a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080211471 - Adaptive leading-edge blanking circuit and method for switching mode power converter: In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided for preventing the converter from entering pulse... Agent: Rosenberg, Klein & Lee

20080211472 - Programmable on-chip sense line: Disclosed herein is a system for controlling power supply voltage to an on-chip power distribution network. The system incorporates a programmable on-chip sensing network that can be selectively connected to the power distribution network at multiple locations. When the sensing network is selectively connected to the power distribution network at... Agent: Frederick W. Gibb, Iii Gibb & Rahman, LLC

20080211473 - Synchronous rectifier having precise on/off switching time: A synchronous rectifier, including an energy storage element having a terminal; a power supply input, connected to the terminal of the storage element in a first time interval; a reference line connected to the terminal of the storage element in a second time interval; and a zero comparator, coupled to... Agent: Stmicroelectronics Inc. C/o Wolf, Greenfield & Sacks, P.C.

20080211474 - Step-up/down dc-dc converter: A step-up/down DC-DC converter is disclosed that includes: a step-up/down part generating an output voltage by stepping up or down an input voltage; and a control part generating an error signal indicating an error between a voltage value obtained by dividing the output voltage and a predetermined reference voltage, and... Agent: Dickstein Shapiro LLP

20080211475 - Step-up converter: The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of... Agent: Mcdermott Will & Emery LLP

20080211476 - High voltage shunt-regulator circuit with voltage-dependent resistor: A voltage regulator circuit comprising a first circuit functioning as a voltage dependent resistor, the first circuit having an input coupled to a voltage source and an output and having a resistance dependent on the voltage applied across the circuit by the voltage source such that the resistance increases as... Agent: Ostrolenk Faber Gerb & Soffen

20080211477 - Voltage control circuit: A circuit for controlling voltage includes a condenser having a first end coupled to an input node of a target circuit, and a second end coupled to a predetermined fixed potential, a constant current source coupled to the first end of the condenser, and a control circuit configured to charge... Agent: Arent Fox LLP

20080211478 - Frequency controller resonant converter: A resonant converter is provided which may be used for supplying power to the primary conductive path of an inductively coupled power transfer (ICPT) system. The converter includes a variable reactive element in the resonant circuit which may be controlled to vary the effective inductance or capacitance of the reactive... Agent: Darby & Darby P.C.