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Electricity: power supply or regulation systems June invention type 06/12

20120161726 - Safe area voltage regulator: A safe area voltage regulator is provided that includes a loss element, a distributed shunt regulator and an output terminal. The loss element component is directly connected to the distributed shunt regulator and includes a plurality of loss elements connected in series. The distributed shunt regulator is made up of... Agent: Lockheed Martin Corporation

20120161727 - Power control circuits and methods: In a switching mode power supply, a power controlling circuit includes a phase generator and a phase controller. The phase generator provides a clock signal. The phase controller detects phases of a phase reference signal and a burst initialization signal so as to generate a burst signal, and causes a... Agent:

20120161728 - Switching voltage regulators with hysteretic control for enhanced mode-transition speed and stability: Switching voltage regulator embodiments are provided with hysteretic control to thereby switch between pulse-width modulation and pulse-frequency modulation operational modes. The switching is in response to different levels of an error voltage Verr in the feedback loop of voltage regulators. The hysteretic control is configured to provide a dc hysteretic... Agent: Analog Devices, Inc.

20120161729 - Buck converter: A buck converter includes an input unit, an inductor, and a filter capacitor. The input unit has an input node connected to a power source and an intermediate node connected to an output node through the inductor. The filter capacitor is coupled between the output node and ground. A first... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120161730 - Power and management device and method: A power management device comprises: an input for receiving a transient energy pulse; a first storage section and a second storage section for storing energy from the input; an output; a switching section for selectively connecting the input, first storage section, second storage section and output in at least first... Agent: Nxp B.v.

20120161731 - Voltage regulator and associated apparatus and methods: In one or more embodiments described herein, there is provided an apparatus comprising an input, an output, one or more voltage regulator circuit components, and one or more graphene capacitors. The voltage regulator circuit components are configured to provide for a change in the voltage level of signalling between the... Agent:

20120161732 - Voltage regulator configuration: A voltage regulator is configurable to operate in a linear regulator mode or a buck regulator mode. To operate in the buck regulator mode, the voltage regulator is coupled to an inductor. To determine whether an inductor is coupled to voltage regulator, and thus whether the voltage regulator can be... Agent: Atmel Corporation

20120161734 - Low drop out voltage regulato: A low drop out (LDO) voltage regulator having an error amplifier, a power transistor, a first voltage division unit, a compensation control unit and a compensation bias current source is provided. The error amplifier generates a control voltage according to a first reference voltage and a feedback voltage. The power... Agent: Winbond Electronics Corp.

20120161733 - Voltage regulator that can operate with or without an external power transistor: A voltage regulator, according to the present invention, can operate with or without an external power transistor to generate a regulated output voltage. The voltage regulator determines whether an external power transistor is connected thereto. The voltage regulator then automatically sets a frequency compensation scheme that depends on whether an... Agent: Texas Instruments Incorporated

20120161735 - Peak current controlled switching voltage regulator system and method for providing a self power down mode: A peak current controlled switching voltage regulator system and method for providing a self-power down mode. An on-chip voltage regulator integrated into an on-chip digital logic circuit provides a core supply voltage to the on-chip digital logic circuit along with an off-chip inductor. An off-chip regulator connected to the on-chip... Agent: Lsi Corporation

20120161736 - Apparatus and method for initializing dc-dc converter: The present disclosure relates to an apparatus and method for initializing a DC-DC converter, and can stabilize an output voltage in an initial state, and prevent malfunction of a system control through initialization and high-efficiency DC-DC converters, by converting a variable voltage into a predetermined constant voltage and generating a... Agent: Electronics And Telecommunications Research Institute

20120161737 - Output circuit: There is provided an output circuit for supplying an output current to a load coupled to an output terminal in response to an input signal. The output circuit includes an output transistor for supplying the output current to the output terminal, an output-drive circuit for driving the output transistor, a... Agent: Renesas Electronics Corporation

20120161738 - Switching-mode power supply device: Disclosed is a switching-mode power supply device which outputs a voltage having a different electrical potential from an input voltage including an inductor, a driving switching element and a control circuit, and the control circuit includes a trigger signal generating circuit which generates and outputs a signal which provides timing... Agent: Mitsumi Electric Co., Ltd.

20120161739 - Variable time clamp for a power supply controller: An example integrated circuit for use in a power supply includes a feedback terminal and a controller having a variable time clamp (VTC). The feedback terminal is to be coupled to receive a feedback signal and the controller is to be coupled to enable or disable the conduction of a... Agent: Power Integrations, Inc.

20120161740 - Load adaptive voltage regulator: Methods and systems may involve detecting an output voltage of a voltage regulator and sensing an inductor current corresponding to a saturating output inductor of the voltage regulator. A switching frequency signal can be generated based on the inductor current, wherein the voltage regulator may be controlled based on the... Agent:

20120161741 - Current generator for temperature compensation: A current generator includes a thermistor configured to receive an input current, a reference resistor of a value substantially corresponding to a resistance of said thermistor at a reference temperature, a current mirror configured to generate a mirrored current proportional to said input current, a feedback circuit configured to generate... Agent: Stmicroelectronics S.r.l

20120161742 - Current generator and method of operating: A current generator includes an op-amp having a negative terminal arranged to be coupled to an input voltage, a resistance selection circuit having at least one tunable resistor connected with each other, and at least one power transistor. A gate of the at least one power transistor is coupled to... Agent: Taiwan Semiconductor Manufacturing Company, Ltd.

20120161744 - Reference voltage generating apparatus and method: A method and apparatus for generating a low reference voltage having low power consumption characteristics is provided. A reference voltage generating apparatus includes a constant current source circuit which generates a reference current. A load circuit is connected to the constant current source circuit and generates a voltage which is... Agent:

20120161743 - Regulation device and power adapter using the same: A power adapter includes a regulation device, which includes a division circuit, a reference circuit, and an impedance regulation circuit. The division circuit includes a first reference terminal and a second reference terminal. The second reference terminal is connected to an output terminal of the regulation device. The reference circuit... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120161745 - Power supply detection circuit: Power supply detection circuit. The power supply detection circuit includes an input circuit responsive to a core power supply voltage to generate a first output voltage at a first node. The power supply detection circuit also includes a sense logic circuit to sense a voltage drop associated with the first... Agent: Texas Instruments Incorporated

20120161746 - Low-power operation for devices with circuitry for providing reference or regulated voltages: A device includes a voltage regulator and/or circuitry for generating a reference voltage. The voltage regulator and the circuitry for generating the reference voltage are operable in a continuous mode or a sample mode. Operating in the sample mode can help reduce overall power consumption of the device. During the... Agent: Atmel Corporation

20120153906 - Method for scaling a drive signal and circuit therefor: In accordance with an embodiment, a converter includes a circuit and method for scaling a drive signal. The converter determines the power at its input and scales a drive signal in accordance with the input power. In accordance with another embodiment the converter determines the power at its output and... Agent:

20120153907 - Dual-stage power conversion: A circuit converts an input voltage to an output voltage. The circuit includes a first stage voltage converter that receives the input voltage and converts the input voltage. The first stage voltage converter includes a first buck converter having a double rail output: a first rail at a high intermediate... Agent: Qualcomm Incorporated

20120153909 - Hybrid fast-slow passgate control methods for voltage regulators employing high speed comparators: Voltage regulator circuits and methods implementing hybrid fast-slow passgate control circuitry are provided to minimize the ripple amplitude of a regulated voltage output. In one aspect, a voltage regulator circuit includes a comparator, a first passgate device, a second passgate device, and a bandwidth limiting control circuit. The comparator compares... Agent: International Business Machines Corporation

20120153908 - Power management circuit and electronic device employing the same: A power management circuit for managing power of an electronic device includes a regulator and a protection circuit. The regulator converts an input voltage into a corresponding rated voltage and includes an enable pin and an output pin. The enable pin receives a voltage signal to enable or disable the... Agent: Shenzhen Futaihong Precision Industry Co., Ltd.

20120153910 - Dual-loop voltage regulator architecture with high dc accuracy and fast response time: Dual-loop voltage regulator circuits and methods in which a dual-loop voltage regulation framework is implemented with a first inner loop having a bang-bang voltage regulator to achieve nearly instantaneous response time, and a second outer loop, which is slower in operating speed than the first inner loop, to controllably adjust... Agent: International Business Machines Corporation

20120153912 - Controller for a power converter and method of operating the same: A controller, power converter and method of controlling a power switch therein to improve power conversion efficiency at low output current. In one embodiment, the power converter includes a power switch coupled to a source of electrical power, and a controller coupled to a control terminal of the power switch... Agent:

20120153914 - Load control apparatus: A load control apparatus is provided in which a circuit of detecting an overcurrent can be correctly operated even if a first capacitor (C1) for noise measures is disposed. Since a second capacitor (C2) is provided between a gate and a drain of an FET (T1), when the voltage (V1)... Agent: Yazaki Corporation

20120153913 - Method for improving voltage identification transient response and voltage regulator: An exemplary method for improving voltage identification (VID) transient response is adapted to a voltage regulator and includes steps of: continuously sensing an inductor current of the voltage regulator to thereby output a current sense signal; during a steady state operation period, sampling the current sense signal to thereby obtain... Agent: Richtek Technology Corp

20120153911 - Systems and methods for switched mode power amplification: Systems and methods for switched mode power amplification are disclosed herein. A circuit is provided comprising an amplifier network, a DC translation stage for receiving input voltage from the amplifier network and for providing an output voltage to a voltage boost circuit, and a feedback network for providing feedback from... Agent: Goodrich Corporation

20120153915 - Buck or boost dc-dc converter: A control circuit for controlling a DC-DC converter, with the converter including an inductor and associated switching circuitry, with the switching circuitry including a first transistor switch connected intermediate an input voltage terminal and a first terminal of the inductor, a second transistor switch connected intermediate the first terminal of... Agent:

20120153916 - Digital boost feedback voltage controller for switch-mode power supplies using pulse-frequency modulation: A controller produces high-side and low-side control signals. The high and low-side signals are used to switch high-side and low-side transistors in the power stage to control the voltage across the power stage output capacitor of the power stage. A boost feedback charge pump receives the low or high-side signal... Agent: Exar Corporation

20120153917 - Low-to-medium power single chip digital controlled dc-dc regulator for point-of-load applications: A DC-DC converter for generating a DC output voltage includes: a digitally controlled pulse width modulator (DPWM) for controlling a switching power stage to supply a varying voltage to an inductor; and a digital voltage feedback circuit for controlling the DPWM in accordance with a feedback voltage corresponding to the... Agent:

20120153918 - Protection circuit for protecting a half-bridge circuit: The present invention relates to a protection circuit for protecting a half-bridge circuit. The protection circuit detects an incorrect response of the half-bridge by monitoring the current of a first switch at a series resistor of a second switch. The protection circuit has a detector for detecting the voltage across... Agent:

20120153919 - Switching mode power supply control: A method for controlling a switching converter is disclosed whereby the switching converter is configured to convert an input voltage into an output voltage supplied to a load in accordance with a switching signal, The switching converter is configured to operate in a pulse width modulation mode or, alternatively, in... Agent:

20120153920 - Systems for indirect average current measurement: One example of the invention relates to a power system. The power system can include a power converter configured to convert an input voltage to an output voltage for providing power at an output thereof to which a load is connectable. A measurement system can include measurement circuitry configured to... Agent:

20120153922 - Control for regulator fast transient response and low emi noise: Methods and circuits for power supply arrangement and control are disclosed herein. In one embodiment, a switching regulator can include: (i) a filter network coupled to an output terminal, where an output voltage is generated at the output terminal from an input source; (ii) an active switch to connect the... Agent: Silergy Technology

20120153921 - Methods and apparatuses for combinations of current feedback for frequency compensation, overload detection, and super overload detection in switching power conversion: A single replica current is proportional to current through a main switch of a switching power converter. This replica current may be used for current compensation, detection and response to an overload, detection and response to a super-overload, and combinations thereof. An input voltage is switchably coupled to an output... Agent:

20120153923 - Method and apparatus for supplying power to 300 pin msa 40gb transponder: A method and an apparatus for supplying power to a 300 PIN MSA 40 Gb TRANSPONDER (22), wherein the apparatus comprises a power supply control module (21), a first resistor (R2), a second resistor (R3) and a third resistor (R4). The power supply control module (21) supplies power to the... Agent: Zte Corporation

20120153924 - Voltage regulator soft-start circuit: Techniques are disclosed for providing an improved start-up (soft-start) circuit for use with voltage regulators, and an improved regulator start-up methodology. For example, an apparatus comprises a voltage regulator circuit and a start-up circuit operatively coupled to the voltage regulator circuit. The start-up circuit is configured to provide a current... Agent:

20120153926 - Terminal device and supply current control method: Provided are a terminal device and a supply current control method which enable reliable charging with a current obtained by power generation. In a terminal device (100), a control unit (107) controls the output current of a generated power supply adjustment unit (102) on the basis of a current value... Agent: Panasonic Corporation

20120153925 - Voltage adjustment system: A voltage adjustment system includes a power supply for providing an initial voltage signal, a plurality of buck converters for receiving the initial voltage signal and generating one adjustable output voltage signal respectively, a microcontroller for determining one adjustable output voltage signal to output and determining whether a variable voltage... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd .

20120153927 - Fault current limiter with saturated core: A three-phase current limiter (30) for an alternating current system includes an AC magnetic circuit having at least one AC coil (35R1, 35S1, 35T1) for each phase of a 3-phase AC supply wound on a saturable ferromagnetic core and configured to subject respective AC coils for each phase to a... Agent: Bar Ilan Research & Development Company Ltd.

20120153929 - Dc-dc converter, module, power supply device, and electronic apparatus: A controller CT1 switches on a first switch SW1, and the direct-current voltage given from a power source BAT flowing through a first inductor L1 is smoothed by a capacitor C1 and is output from an output terminal OUT1. After a specified period of time has elapsed since the first... Agent: Fujitsu Limited

20120153930 - Load control device: A load control device includes: a main switching unit which has a main switch element connected in series to an AC power source and a load and controls the supply of power to the load; a manipulation switch that outputs a start-up signal for starting at least the load; a... Agent: Panasonic Corporation

20120153928 - Power controller system: A power controller system configured to electrically supply a load via a circuit is provided. The system comprises, a switching device provided in an electrical pathway for supplying current to the load, a controller configured to open the switching device when a current through or voltage across the switching device... Agent:

20120153931 - electronic current transformer based on complete self-excitation power supply: An electronic current transformer (ECT) based on complete self-excitation power supply is provided. The ECT includes an energy-obtaining coil, a rapid voltage-stabilizing circuit and an Analog/Digital (A/D) converting circuit. The output of the energy-obtaining coil is connected with the input of the voltage-stabilizing circuit. The output of the voltage-stabilizing circuit... Agent: Xi'an Hwell Optic-electric Tech Co., Ltd.

20120153932 - Vacuum capacitor-voltage-transformer: [Means for Achieving Task] The means is so made that a main capacitor portion 8 and a voltage dividing capacitor portion 10 are installed in a earthed vacuum vessel, a main ground circuit 30 is provided through which a leak current I2 flows from an outer surface of the primary... Agent: Meidensha Corporation

20120146594 - Circuit of high efficient buck-boost switching regulator and control method thereof: Systems and methods for providing a buck-boost converter with an improved efficiency are disclosed. The buck-boost converter disclosed operates in 5 different modes, namely in buck mode, half frequency buck mode, half frequency buck-boost mode, half frequency boost mode, and in boost mode. In half frequency buck mode, buck-boost mode,... Agent: Dialog Semiconductor Gmbh

20120146597 - Power supply apparatus: A load capacitor is connected to a power supply terminal of a DUT. A current detection unit detects an output current output from a power supply apparatus. A nonlinear control unit controls its output amount so as to provide a balance between an amount of charge with which the load... Agent: Advantest Corporation

20120146595 - Regulator with high psrr: A regulator for providing a low dropout voltage at an output node of the regulator is provided. An amplifier has a non-inverting input terminal for receiving an input voltage, an inverting input terminal and an output terminal. A first resistor is coupled between a ground and the inverting input terminal... Agent: Mediatek Singapore Pte. Ltd.

20120146596 - Voltage converter: A voltage converter includes a voltage converting circuit, a pulse width modulation (PWM) controller, a feedback circuit, an adjusting circuit, and a measuring circuit. The voltage converting circuit converts an input voltage to a low output voltage for a load. The PWM controller includes a comparator and a triangular-wave oscillator.... Agent: Hon Hai Precision Industry Co., Ltd.

20120146598 - Power converting apparatus and method of sensing output current thereof: A power converting apparatus includes a power converter, a first resistor, a second resistor, a current controller, a voltage sensor, a sample/holder, and a switch controller. The power converter converts an input voltage into an output voltage. The first resistor is connected to an output of the power converter, and... Agent:

20120146599 - Comparator, control circuit of switching regulator using the same, switching regulator, and electronic equipment: The present invention provides a comparator with novel output logic. The comparator makes a comparison between an input voltage and a reference voltage. A differential amplifying circuit includes a first input transistor with a control terminal applied with the reference voltage and a second input transistor with a control terminal... Agent: Rohm Co., Ltd.

20120146600 - Power circuit and circuit board, electrical device using the same: A power circuit includes a control unit, a logic control circuit, a first driver amplifier, a second driver amplifier and a logic determination circuit. The control unit is used to output a pulse width modulation (PWM) signal and an enable (EN) signal. The logic control circuit receives the PWM signal... Agent:

20120146601 - Voltage divider circuit and voltage regulator: The invention provides a voltage regulator including a voltage divider and a power supply. The voltage divider circuit includes a first, second, third PMOS transistors, a first NMOS transistor, a pull down circuit, and a switching capacitor circuit. The pull down circuit includes a plurality of switches controlled by a... Agent: Elite Semiconductor Memory Technology Inc.

20120146602 - Control circuit and method for a buck-boost switching converter: A control circuit and method for a buck-boost switching converter provides a mode determinative circuit to judge the timing of an operation under buck-boost mode based on the input voltage, the output voltage and the mode reference voltage; meanwhile, the control signal generating circuit is provided to turn off the... Agent: Richtek Technology Corporation

20120146605 - Control circuit for switching regulator, switching regulator and electronic equipment using the control circuit: The invention improves the voltage regulation rate of the switching regulator in lag control. A divided output voltage divided by the first resistor and the second resistor is input to a first polarity input terminal of a comparator. A driver is used for controlling a switching transistor and a synchronous... Agent: Rohm Co., Ltd.

20120146604 - Switching control circuit: A switching-control circuit to control a switching operation of a transistor, having an input electrode applied with the input voltage and an output electrode connected to a load via an inductor, to generate an output voltage of a target level from an input voltage, includes: a voltage-generating circuit to generate... Agent: On Semiconductor Trading Ltd.

20120146603 - Voltage regulator: Provided is a voltage regulator including a phase compensation circuit capable of obtaining an accurate output voltage. The phase compensation circuit includes: a first constant current circuit connected to a gate of an output transistor; a first transistor having a drain connected to the gate of the output transistor; and... Agent:

20120146606 - Constant on-time converter with stabilizing operation and method thereof: The embodiments of the present invention disclose a constant on-time converter with stabilizing operation and a control method thereof. The converter may comprise an input terminal, an output terminal, a feedback circuit, an operating circuit, a comparison circuit, a timer, a driving circuit and a switching circuit. The operating circuit... Agent:

20120146607 - Method and apparatus for input charge control of a power supply: An example power supply includes an energy transfer element, a switch and a controller. The controller includes a logic circuit and a constant current control circuit. The logic circuit generates a drive signal to control the switch in response to a control signal. The constant current control circuit generates the... Agent: Power Integrations, Inc.

20120146610 - Discharger and discharger control method: Upon detecting an external signal which instructs to stop discharge, an input voltage equal to or less than a set value for the prevention of overdischarge, or an output voltage equal to or more than a set value for the prevention of output of an overvoltage, a control unit (12)... Agent:

20120146609 - Switching control circuit: A switching-control circuit configured to keep a transistor on for a predetermined time to generate a target-level-output-voltage from an input voltage. The circuit configured to generate, every switching period of the transistor, a slope voltage corresponding to that of a ripple voltage contained in an output voltage during a time... Agent: On Semiconductor Trading Ltd.

20120146608 - Voltage regulator and pulse width modulation signal generation method thereof: In a PWM signal generation method of a voltage regulator, an output sense signal, a first ramp signal and a second ramp signal are provided. A first time point of the first ramp signal crossing with the output sense signal is used to determine a start point of an ON-time... Agent: Richtek Technology Corp

20120146611 - Circuit to improve stability of boost-mode converters: Systems and methods for providing a boost converter with an improved stability are disclosed. A sample and hold circuit is connected to the output of the boost converter. That sample and hold circuit holds the output voltage before the main switch of the boost converter turns ON and holds the... Agent: Dialog Semiconductor Gmbh

20120146613 - Integrated circuit-based drive circuit for driving voltage-controlled switching device and method of manufacturing the drive circuit: A drive circuit supplies a charging current via a charging path to drive the control terminal of a voltage-controlled switching device, with a resistor and a switching device being connected in series in the charging path. A control circuit in an integrated circuit of the drive circuit operates an internal... Agent: Denso Corporation

20120146614 - Power supply controller: If a power supply path is in an abnormal state, a power-supply-path protection circuit of a power supply controller inhibits a switching circuit that switches on/off power supply from a power source to a load from power supply, using data related to a protection-current temperature characteristic line set by a... Agent: Sumitomo Wiring Systems, Ltd.

20120146612 - Voltage stabilizing circuit: A voltage stabilizing circuit including an input port, an output port, a transistor, a diode, a three-terminal voltage regulating reference source, a first resistor, and a second resistor. The transistor has a collector terminal and an emitter terminal connected to the input port and the output port, respectively. The diode... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120146616 - Discharger and discharger control method: Upon detecting an external signal which instructs to stop discharge, an input voltage equal to or less than a set value for the prevention of overdischarge, or an output voltage equal to or more than a set value for the prevention of output of an overvoltage, a control unit (12)... Agent:

20120146615 - Output voltage adjustment circuit for buck circuits: An output voltage adjustment circuit for buck circuits includes a microcontroller, first to eighth keys, and a display unit. The first to eighth keys input voltage adjustment signals to the microcontroller. A first input pin of the microcontroller is connected to a voltage output terminal. A second resistor is connected... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120139505 - Bridgeless pfc converter and the method thereof: A bridgeless PFC (power factor correction) converter with improved efficiency is disclosed. The bridgeless PFC converter comprises: a first input terminal and a second input terminal configured to receive an input AC signal; an output terminal; an inductor set comprising N inductors, wherein a first terminal of each inductor is... Agent:

20120139506 - Reactive power compensator: A first SVC is connected to a first bus. A first SVC control unit controls the first SVC. A first fluctuation-component-voltage generating unit includes a voltage reference circuit that outputs a voltage reference value. A second SVC is connected to a second bus. A second SVC control unit controls the... Agent: Mitsubishi Electric Corporation

20120139507 - Hysteretic voltage converter with offset voltage correction: A hysteretic power converter wherein an additional adjustment circuit, implemented as an offset correction loop, adds an offset to the comparator detection function to reduce the difference between the average output voltage and the regulation set point voltage. The adjustment circuit lies outside the main hysteretic regulation loop and therefore... Agent: Microsemi Corporation

20120139508 - Semiconductor apparatus: A device includes a first internal voltage generation circuit generating a first internal voltage in response to an external power supply voltage, a second internal voltage generation circuit generating a second internal voltage in response to the external power supply voltage, the second internal voltage being different in voltage level... Agent: Elpida Memory, Inc.

20120139509 - System, apparatus and methods for controlling multiple output converters: An apparatus and method is presented for implementing and controlling a voltage converter with one input voltage and multiple output voltages. In the case of boost and buck-boost converters, a converter circuit with one inductor and a switched group of parallel connection capacitors is realized, one parallel connection for each... Agent:

20120139510 - Tap changer with vacuum switch tubes: The invention relates to a stepping switch comprising vacuum switching tubes. The general inventive concept consists in providing one or more cam disks which have profiled circumferential contours both on the upper or lower face as well as on the lateral face, said contours being in the shape of cams... Agent:

20120139511 - Power adapter having multi-dc power connectors: The present invention discloses a power adapter has a power converter, a power output cable, a first DC power connector and multiple second DC power connectors. The power converter has a casing, a power converting circuit mounted in the casing, and an AC power inlet and DC power outlet electronically... Agent:

20120139512 - Dc-dc converter: The present invention provides a DC-DC converter including: a first series circuit which is connected to the two ends of a direct-current power source Vi, and in which a first switching element Q1 and a second switching element Q2 are connected together in series; a control circuit 10 configured to... Agent: Sanken Electric Co., Ltd.

20120139513 - Parameter adjustment depending on resonant frequency of a power supply: According to example configurations herein, a controller receives a value indicative of a number of phases in a power supply to be activated for producing an output voltage to power a load. A resonant frequency of the power supply changes depending on the number of phases activated. According to one... Agent:

20120139515 - Power supply apparatus and power supply system with plural power supply apparatuses: A power supply apparatus includes a front-stage power circuit, a bus capacitor, a standby power circuit, a standby power circuit, an auxiliary switching circuit and a controlling unit. The auxiliary switching circuit is electrically connected between the bus capacitor and the standby power circuit. The controlling unit is electrically connected... Agent: Delta Electronics, Inc.

20120139516 - Power supply circuit with adaptive input selection and method for power supply: The present invention discloses a power supply circuit with adaptive input selection and a method for power supply. The power supply circuit includes: a charge pump for receiving at least one voltage and generating a boosted voltage; a first buck switching regulator coupled to a battery, for operating at least... Agent: Richtek Technology Corporation, R.o.c.

20120139514 - Switch-mode power supply with enhanced current source capability: A switch-mode power supply includes an input port, an output port, and a power train operably connected to the input port and the output port. The power train includes at least one inductor and at least one switching device. The switch-mode power supply further includes a control logic configured to... Agent: Eaton Corporation

20120139517 - User-configurable, efficiency-optimizing, calibrated sensorless power/energy conversion switch-mode power supply with a serial communications interface: An intelligent pulse width modulation (PWM) controller adapts a switch mode power supply (SMPS) system's operating parameters to optimize efficiency, remove hot spots and isolate faults by integrating a microcontroller, PWM digital circuits and analog circuits into a single integrated circuit, thereby reducing the number of external connections, silicon die... Agent: Microchip Technology Incorporated

20120139518 - User-configurable, efficiency-optimizing, power/energy conversion switch-mode power supply with a serial communications interface: An intelligent pulse width modulation (PWM) controller adapts a switch mode power supply (SMPS) system's operating parameters to optimize efficiency, remove hot spots and isolate faults by integrating a microcontroller, PWM digital circuits and analog circuits into a single integrated circuit, thereby reducing the number of external connections, silicon die... Agent: Microchip Technology Incorporated

20120139519 - Lossless inductor current sensing in a switch-mode power supply: A lossless inductor current sense technique integrates a matched, tunable complimentary filter with a switch mode power supply (SMPS) controller for accurately measuring current through the power inductor of the SMPS without introducing losses in the power circuit. The complimentary filter can be adjusted in-circuit to significantly reduce the effects... Agent: Microchip Technology Incorporated

20120139520 - Linear regulator and electronic device comprising such a linear regulator: The invention relates to a linear regulator comprising input means configured to receive an input voltage, output means configured to deliver an output voltage, a shunt element coupled to said input means and said output means, and configured to be passed through by a current and to exhibit across its... Agent: St-ericsson Sa

20120139522 - Converter controller: There is disclosed a converter controller which can simply and early detect an abnormality of an auxiliary circuit constituting a soft switching converter. On turning off a first switching element, a controller detects a voltage between both the ends of a snubber capacitor and a voltage between both the ends... Agent: Toyota Jidosha Kabushiki Kaisha

20120139521 - Dc-dc converter: A DC-DC converter having a first and a second switch, an input diode, a magnetizing inductor, a resonant capacitor, a resonant inductor, an output diode and an output filter capacitor. The first and second switches are turned on alternatively. When the first switch is turned on, an input voltage is... Agent: Himax Technologies Limited

20120139523 - Reference current output device and reference current output method: A reference current output device and reference current output method that may adjust a reference current while maintaining a temperature gradient. In the reference current output device and reference current output method of the present invention, a reference current is outputted by a reference voltage and current output circuit, a... Agent: Lapis Semiconductor Co., Ltd.

20120139524 - Constant current circuit: According to one embodiment, a constant current circuit, including A constant current circuit, a current mirror circuit generating an output current, an external terminal to which an external resistance is connected, a reference current to be supplied to the current mirror circuit depending on the external resistance, a first detection... Agent: Kabushiki Kaisha Toshiba