Electricity: power supply or regulation systems inventions 04/07

20070090811 - Apparatus and methods for providing a voltage adjustment for single-phase voltage regulator operation in a three-phase power system: Provided is an apparatus and method for providing a voltage reduction for single-phase voltage regulator operation in a three-phase power system. The voltage regulator includes a plurality of tap positions selectable to adjust a voltage at a load to an in-band area. The method includes determining a measured voltage and... Agent: Cook, Alex, Mcfarron, Manzo, Cummings & Mehler Ltd

20070090812 - Control loop for switching power converters: A control loop for a clocked switching power converter where the loop features a comparator (44) and a filter (61) in series to linearize the nonlinear response of the comparator (44). The filter (61) has poles and zeros offsetting the poles and zeros of a bridge rectifier (M1 and M2).... Agent: James E. Eakin

20070090813 - Dc chopper and method for operating a dc chopper: A DC chopper features a setting device, which sets a required current value signal being dependent on a filtered input voltage such that an oscillation of the input filter device and an oscillation of the current are phase-opposed. The DC chopper may further have a control device, which, depending on... Agent: Lerner Greenberg Stemer LLP

20070090814 - Semiconductor device and power supply device using the same: A semiconductor device capable of reducing an inductance is provided. In the semiconductor device in which a rectification MOSFET, a commutation MOSFET, and a driving IC that drives these MOSFETs are mounted on one package, the rectification MOSFET, a metal plate, and the commutation MOSFET are laminated. A current of... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070090815 - Integrated circuit with power gating function: An integrated circuit with power gating function is disclosed, comprising a low dropout regulator coupled to a first power line to provide power to the first power line, a switch module connected between a second power line and a voltage source, turned on and off based on a mode signal... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20070090818 - Control circuit of dc-dc converter and control method thereof: The present invention presents a DC-DC converter control circuit and a control method capable of reducing errors between an output voltage and a reference voltage due to fluctuations of an input voltage and an offset voltage of a voltage comparator. A control unit 9 includes an integrating circuit 12, a... Agent: Arent Fox PLLC

20070090819 - Dc-dc converter and method for controlling dc-dc converter: A DC-DC converter applicable to a wide input voltage range. An error amplifier compares a divided voltage, which is generated by dividing output voltage with a plurality of resistors, and a reference voltage to generate an error signal. A voltage source generates an offset signal by offsetting the error signal.... Agent: Arent Fox PLLC

20070090817 - Intelligent soft start for switching regulators: A circuit, method, and system for intelligently soft starting switching regulators are provided. The circuit, method, and system provide for a switching circuit operable to couple an input voltage to an output of the switching regulator in response to a control signal, a controller operable to generate the control signal... Agent: Sawyer Law Group LLP

20070090820 - Power supply circuit, and testing apparatus: There is provided a power-supply circuit for supplying voltage to a load, having a power supply that generates power-supply voltage, an inverted outputting circuit having a positive voltage terminal for outputting positive voltage based on the power-supply voltage and a negative voltage terminal for outputting negative voltage generated based on... Agent: Osha Liang L.L.P.

20070090816 - Switching regulator having energy saving circuit energy saving control method: A switching regulator having an energy saving circuit and an energy saving method is provided to improve the system efficiency under light load conditions. A first control unit outputs an oscillation signal and an energy saving signal in response to the variation of a feedback signal. A second control unit... Agent: Bacon & Thomas, PLLC

20070090821 - Dc-dc converter and control method thereof: A DC-DC converter has a switching circuit including switching elements at the high-side and at the low-side, an inductor connected to the output end of the switching circuit, a smoothing capacitor connected to the inductor, a switching control circuit for supplying a switching pulse to the switching elements, and a... Agent: Howard & Howard Attorneys, P.C.

20070090822 - Electronic ballast with lamp type determination: An electronic ballast includes open circuit voltage regulation comprises an filament current sensing circuit 224 operably connected to an output of the electronic ballast and generating a sensed output voltage signal, and a regulating pulse width modulator U3 receiving the sensed output voltage signal and operably connected to control voltage... Agent: Philips Intellectual Property & Standards

20070090823 - [detect/modulate circuit]: A detect/modulate circuit comprises a plurality of modulate resistors connected to a main resistor of a bandgap in series, and each module resistor is connected to a transistor switch in parallel, and each transistor switch is connected to a logic controller, and the logic controller is connected in sequence to... Agent: Phison Electronics Corporation

20070085513 - Lookup table circuit: The present invention provides a LUT circuit that can simultaneously determine the corresponding output values of a plurality of input values. The LUT circuit of the present invnention includes a plurality of comparators, a plurality of selecting circuits and at least one table stored in a memory. This table is... Agent: Birch Stewart Kolasch & Birch

20070085514 - Electronic equipment having a boost dc-dc converter: Provided is an electronic equipment including: a boost DC-DC converter and an electric power storage device, in which the electric power storage device is charged with a electric power outputted the DC-DC converter with efficiency, and in which stored electric power of the electric power storage device is not wastefully... Agent: Brinks Hofer Gilson & Lione

20070085515 - Boost circuit capable of efficiently supplying power with compact size: This patent specification describes a boost circuit which includes an inductor wired to an input terminal, a switching device connected between the inductor and a ground, a rectifying device formed of a MOS transistor and connected between the inductor and an output terminal and configured to be switched in accordance... Agent: Cooper & Dunham, LLP

20070085516 - Connector arrangements on a power supply unit: The invention relates, in an embodiment, to a power supply module configured to be coupled to a power outlet to supply an operating voltage to a data processing device. The power supply module includes a set of signal connectors having at least a first signal connector. The set of signal... Agent: Ipsg, P.C.

20070085517 - Power factor correction ic: A power factor correction integrated circuit housed in an integrated circuit package for controlling a boost converter circuit having an input inductor coupled in series with a boost rectifier between a rectified AC line input voltage and a DC bus voltage, on a DC bus, the rectified AC line input... Agent: Ostrolenk Faber Gerb & Soffen

20070085518 - Phase reference generator with driving point voltage estimator: A phase reference generator for use in a resistance weld control. The phase reference generator including a digital signal processor having a digital volt-time area generator to generate a volt-time area of an observed voltage; a digital current-time area and current-difference-time area generator to generate a current-time area of an... Agent: Schneider Electric / Square D Company Legal Dept. - I.p. Group (b&w)

20070085520 - A pulse-frequency mode dc-dc converter circuit: A step-down switching voltage regulator may operate in PFM mode based on peak current sense without requiring an external diode. The regulator may comprise a PMOS transistor and an NMOS transistor whose drains are coupled to a common output node and whose sources are coupled to high and low supply... Agent: Huffman Law Group, P.C.

20070085519 - Switching regulator with automatic multi mode conversion: Methods and apparatus are disclosed for efficient switching regulators that adapt automatically to, and operate with, input voltages that are above, below, or equal to the output voltage. The disclosed switching regulators demonstrate advantages of both buck and boost converters at high efficiency.... Agent: Perkins Coie LLP Patent-sea

20070085521 - Power supply for switching operation, electronic apparatus including the same, and method of controlling the same: An object of this invention is to finely set the voltage at high speed without decreasing the efficiency. In a power supply for switching operation including a switching circuit, an output circuit, a control table which stores data on the ON and OFF periods of the switching circuit in correspondence... Agent: Fitzpatrick Cella Harper & Scinto

20070085522 - Control device for switching converter and switching converter incorporating same: A control device for a switching converter has an input terminal and an output terminal; the converter includes a half-bridge of a first and a second transistor coupled between the input terminal and a reference voltage. The control device detects a signal on the output terminal of the converter, integrates... Agent: Hogan & Hartson LLP

20070085523 - Dc-dc converter: A DC-DC converter with an inductor connected in series with a power transistor between first and second terminals of a DC supply source, and with a modulator circuit that has a control output connected to a control gate of the power transistor. The modulator circuit provides a periodic pulse signal... Agent: Texas Instruments Incorporated

20070080670 - Power dissipation management in linear regulators: A method, circuit, and system for managing power dissipation in a linear regulator are provided. The method includes receiving an input voltage at a pass element of the linear regulator, delivering an output voltage through the pass element, determining an output current through the pass element, and measuring a voltage... Agent: Sawyer Law Group LLP

20070080672 - High efficiency buck converter for both full load and light load operations: A high efficiency buck converter has power-saving means to improve the efficiency under both heavy load and light load conditions. A first circuit generates an oscillation signal and a power-saving signal in response to a feedback signal. In reference to the feedback signal and the oscillation signal, a second circuit... Agent: Bacon & Thomas, PLLC

20070080671 - Load adaptive power converter: In some embodiments, a switching mode power converter has an input and an output. The switching mode power converter may be configured to transition between a continuous conduction mode at a first load level and a discontinuous conduction mode at a second load level, where the second load level is... Agent: Intel Corporation C/o Intellevate, LLC

20070080674 - System and method for an adaptive synchronous switch in switching regulators: Techniques for an adaptive synchronous switch in switching regulators are described, one aspect of which is to achieve a more optimal on/off timing of a synchronous switch that is controlled by the comparator in a feedback control loop and thereby improves power conversion efficiency and system performance; One approach samples... Agent: David Kunst (active-semi International Inc.)

20070080675 - System and method for near zero light-load supply current in switching regulator: Techniques for near zero light-load supply current in switching regulators are described. In one aspect a voltage regulator operating a normal mode is generating an error signal indicating a difference between the output and the regulated voltage. A control signal, at least in part based on the error signal, actively... Agent: David Kunst Active-semi International Inc.

20070080673 - System and method for voltage control of adjustable regulators: A voltage regulator system is disclosed for providing a regulated voltage supply. The voltage regulator system includes a power supply input node for receiving a power supply input voltage, a regulated voltage output node for providing a regulated output voltage, and a feedback circuit coupled to the regulated output voltage... Agent: Gauthier & Connors, LLP

20070075687 - Buck-boost converter: A buck-boost converter includes: a buck converter section including a first switch, a first rectifier, and an inductor; a boost converter section sharing the inductor and including a second switch, a second rectifier, and a smoothing circuit; and a control circuit for generating and outputting a first driving signal for... Agent: Mcdermott Will & Emery LLP

20070075688 - Differential input/differential output converter circuit: A differential input/differential output converter circuit. The circuit comprises differential complementary input modules each comprising cross-coupled devices for biasing current mirror masters to a condition that increases the operating speed in response to a transition in the differential input signals. Certain current mirror masters are biased to a strong threshold... Agent: Priest & Goldstein, PLLC

20070075689 - Dual buck-boost converter with single inductor: A dual output buck-boost power converter operates with a single inductor to achieve high efficiency with automatic or inherent load balancing. Switches associated with the opposite polarity outputs are driven based on feedback signals, with one feedback signal being a reference voltage and another feedback signal being related to an... Agent: Texas Instruments Incorporated

20070075690 - Thermal dissipation improved power supply arrangement and control method thereof: Time-sharing technique is used for power conversion to improve the thermal dissipation thereof. In a power supply arrangement to provide a supply voltage to a load, a plurality of linear regulators are so switched that each time only one of them is enabled to convert an input voltage to the... Agent: Rosenberg, Klein & Lee

20070075691 - Voltage regulator with communication ring scheme: A voltage regulator coupled to an unregulated DC input voltage source by an input terminal, and to a load by an output terminal is disclosed. The voltage regulator converts an input voltage at the input terminal to an output voltage at the output terminal. The voltage regulator includes a master... Agent: Fish & Richardson P.C.

20070075692 - Methods and apparatus for current-controlled transient regulation: Methods and apparatus for regulating power supply according to various aspects of the present invention operate in conjunction with an electronic system configured to interface with a primary voltage regulator. The electronic system comprises a load configured to receive supply current from the primary voltage regulator and a secondary voltage... Agent: Noblitt & Gilmore, LLC.

20070075694 - Controlling a voltage regulator: A technique includes energizing a storage element of a voltage regulator in response to the detection of an output voltage of the voltage regulator falling below a threshold level. The technique includes halting the energization of the storage element in response to the detection of a current in the storage... Agent: Trop Pruner & Hu, PC

20070075693 - Dynamic bias circuit for use with a stacked device arrangement: A regulator circuit includes a first transistor coupled to a supply voltage and a second transistor coupled between the first transistor and an output node. The regulator circuit also includes a dynamic bias circuit that may selectively provide a bias voltage to a gate of the second transistor. During a... Agent: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.

20070075696 - Electronic circuit having transmission line type noise filter: A power supply circuit produces a supply voltage to be supplied to a microprocessor which is an integrated circuit. A transmission line type noise filter includes a signal input terminal, a signal output terminal and two ground terminals corresponding respectively to the signal input terminal and the signal output terminal.... Agent: Katten Muchin Rosenman LLP

20070075695 - High switching frequency dc-dc converter with fast response time: A hysteretic DC-DC converter is provided with high switching frequency, good load regulations and fast load step response and in which the switching frequency is externally adjustable by a novel feedback network that enables substantial independence of duty cycle variation.... Agent: David Kunst (active-semi International Inc.)

20070075697 - Step-down switching regulator: A step-down switching regulator is disclosed that includes a first switching element, a smoothing circuit part including an inductor and a second switching element for synchronous rectification, a switching controller circuit part, and a reverse current detector circuit part that detects a reverse current flowing from the inductor to the... Agent: Cooper & Dunham, LLP

20070075698 - Management of regulator-induced switching noise for sampled systems: A system includes a sampler to sample an input voltage and a switching regulator. The switching regulator is adapted to regulate a switching operation of the regulator in response to the sampling by the sampler.... Agent: Trop Pruner & Hu, PC

20070075699 - Sub-1v bandgap reference circuit: A bandgap reference circuit is disclosed operating under a predetermined low voltage source. The circuit has a first circuit with a first differential amplifier for generating a first current, a second circuit with a second differential amplifier for generating a second current, and a bandgap reference voltage output module for... Agent: L. Howard Chen, Esq. Kirkpatrick & Lockhart Preston Gates Ellis LLP

20070075700 - Switching power supply unit: A switching power supply unit is provided, in which core loss in a transformer or a level of heating due to AC resistance of the transformer can be reduced. A switching power supply unit has a transformer, an inverter circuit and a rectifier circuit. In a secondary side of the... Agent: Oliff & Berridge, PLC