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Electricity: power supply or regulation systems May archived by USPTO category 05/12

20120133344 - Switching power supply device: A switching power supply device of a nonlinear control manner is provided, which includes: a reference voltage generation portion, for generating a reference voltage; a ripple injection portion, for using a switch voltage at one end of a switch element to generate a ripple component, and injecting the ripple component... Agent: Rohm Co., Ltd.

20120133345 - Hysteretic power converter with calibration circuit: A hysteretic power converter includes a comparator, a calibration circuit, and an output node having an output voltage. The calibration circuit is configured to supply a calibrated voltage to the comparator. The comparator controls the output voltage based on the calibrated voltage and a feedback voltage representing at least a... Agent: Taiwan Semiconductor Manufacturing Company, Ltd.

20120133346 - Successive approximation register a/d converter and dc/dc converter: h

20120133347 - Efficiency-optimizing, calibrated sensorless power/energy conversion in a switch-mode power supply: 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, e.g., a mixed signal device, thereby reducing the number... Agent: Microchip Technology Incorporated

20120133348 - Audio-skipping of a constant on-time power converter: When the switching frequency of a constant on-time power converter decreases to a threshold, the power converter is switched from the original operation of triggering a constant on-time of a high-side switch responsive to the output voltage of the power converter reaching a valley point to the operation of triggering... Agent: Richtek Technology Corp.

20120133349 - Measurement circuit for buck circuit: A measurement circuit for overload protection is applied in a buck circuit. The buck circuit includes a pulse width modulation (PWM) controller and a voltage output terminal. The measurement circuit includes a resistance setting circuit to connect different resistances to the PWM controller of the buck circuit. A switch circuit... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120133350 - Direct current voltage supply apparatus: A DC voltage supply apparatus including a voltage detection unit, an enable signal processing unit, a latch unit, a control unit and a voltage transforming unit is provided. The voltage detection unit receives and detects a DC input voltage to generate an input voltage state signal. The enable signal processing... Agent: Inventec Corporation

20120133351 - Switching power source: A switching power source according to one embodiment includes a first transistor and a second transistor. The first transistor is connected to a positive electrode of a DC voltage source. The second transistor is connected between the first transistor and a negative electrode of the DC voltage source. The first... Agent: Sumitomo Electric Industries, Ltd.

20120133352 - Voltage detection: Techniques are disclosed relating to detecting a voltage change. In one embodiment, an integrated circuit may include a monitor circuit and a power management unit. The power management unit may be configured to request a voltage change. The monitor circuit may be configured to detect the requested voltage change and... Agent:

20120133353 - Power-supply-voltage detecting circuit: A power-supply-voltage detecting circuit in an embodiment includes a compensation circuit and a switching element which controls ON-and-OFF of the signal output of the signal circuit. The compensation circuit has a positive temperature coefficient to balance out the negative temperature coefficient that the switching element has.... Agent: Kabushiki Kaisha Toshiba

20120126759 - Power conversion controller having a novel power factor correction mechanism: A power conversion controller having a novel power factor correction mechanism, including: a normalization unit, used to generate a normalized signal according to a line voltage by multiplying the line voltage with a normalizing gain, wherein the normalizing gain is proportional to the reciprocal of the amplitude of the line... Agent: Immense Advance Technology Corp.

20120126761 - Circuitry for controlling a voltage: Circuitry configured for controlling a voltage is described. The circuitry includes a transient detector that detects a transient in a first frame. The circuitry also includes a controller coupled to the transient detector. The controller determines a duty cycle during a period upon detection of the transient and promotes a... Agent: Qualcomm Incorporated

20120126760 - Low dropout regulator: A low-drop out (LDO) regulator circuit is provided having a gate of a pass transistor coupled to an output of an operational transconductance amplifier, the LDO regulator exhibiting a non-dominant pole at an output of the LDO. A dynamic zero-compensation circuit is coupled in parallel to the pass transistor. A... Agent:

20120126762 - Current limiting circuit and power supply circuit: A current limiting circuit for limiting an output current in response to a control current includes a detection circuit to detect a detection voltage responsive to an output voltage, and a control current generating circuit to generate a control current responsive to the detection voltage, wherein the control current generating... Agent: Mitsumi Electric Co., Ltd.

20120126764 - Dc/dc power conversion apparatus: c

20120126763 - System and method for voltage regulation: Systems and methods for voltage regulation provide close-tolerance voltage regulation over a wide input voltage range. A voltage regulator has a reference voltage unit, first and second transistors, and an active circuit element. The reference voltage unit is configured to provide a substantially constant voltage signal at a reference node.... Agent: Taiwan Semiconductor Manufacturing Co., Ltd.

20120126767 - Buck converter: A buck converter includes a first electrical switch and a second electrical switch connected in series, a PWM module coupled to the gate of the first electrical switch through a first adjustable resistance module and coupled to the gate of the second electrical switch through a second adjustable resistance module,... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120126765 - Circuit and system with soft-start functionality: A circuit includes a first control output adapted to couple to a control terminal of a first transistor and a second control output adapted to couple to a control terminal of a second transistor. The circuit further includes a feedback input for receiving a signal and a control circuit. The... Agent:

20120126766 - Control circuit and bulk dc/dc converter in constant on-time mode: Constant on-time control circuit includes a comparing circuit including a comparator including a positive input end for receiving a control voltage; a negative input end for receiving a feedback voltage from the output voltage of the DC/DC converter; and an output end for outputting a comparing signal; and a voltage... Agent:

20120126768 - Control circuit for switching power supply: An error amplifier generates an error signal VERR that corresponds to the difference between a feedback signal VFB and a predetermined reference voltage VREF. A first oscillator generates a first cyclic signal VOSC1 having a sloping segment and a first frequency. A second oscillator generates a second cyclic signal VOSC2... Agent: Rohm Co., Ltd.

20120126769 - Voltage boosting/lowering circuit and voltage boosting/lowering circuit control method: A voltage boosting/lowering circuit according to an aspect of the present invention includes an output voltage generation circuit 15 that includes a switch element 2 connected between an input terminal 1 and a choke coil 3 and a switch element 7 connected between the choke coil 3 and a ground,... Agent: Renesas Electronics Corporation

20120126771 - Circuitry for detecting a transient: Circuitry configured for detecting a transient is described. The circuitry includes an analog-to-digital converter that obtains a first voltage sample at a first time and a second voltage sample at a second time. The circuitry also includes a slope detector coupled to the analog-to-digital converter. The slope detector determines a... Agent: Qualcomm Incorporated

20120126772 - Current mode synchronous rectification dc/dc converter: A current mode synchronous rectification direct current (DC)/DC converter according to the present invention includes: a soft start function unit (in FIG. 1, a reference voltage generation unit (104) enabling a reference voltage REF to slowly increase while starting), for inhibiting a target value of an output voltage VO to... Agent: Rohm Co., Ltd.

20120126770 - Multi-stage voltage regulating circuit with automatic thermal compensation and regulating method thereof: A multi-stage voltage regulating circuit and method with automatic temperature compensation comprises a plurality of charge-pumps, a temperature compensator, a comparative unit and a control logic circuit; wherein, the temperature compensator detects the ambient temperature and outputs a reference voltage related to the ambient temperature, the comparative unit compares the... Agent: Richtek Technology Corporation

20120126773 - Switching regulator with balanced control configuration with filtering and referencing to eliminate compensation: A switching regulator and controller and an electronic device using same are disclosed in which the controller includes a sense circuit, an error amplifier circuit, a filter and reference circuit, and a comparator circuit. The switching regulator includes a pulse switch circuit coupled to an output inductor for developing an... Agent: Intersil Americas Inc.

20120126774 - Systems and methods for self-recycling power: A power system includes a switch, a capacitor and a comparator circuit. The power system receives a signal to turn off power supplied to the power system, turns off the switch that is used to supply power to the system and discharges the capacitor. The power system also compares a... Agent: Juniper Network Inc.

20120126775 - Switching power converter: A switching power converter including an upper-bridge switch, a lower-bridge switch, an impedance circuit, a first control circuit, a second control circuit and a logic circuit is provided. The impedance circuit generates an output voltage and a sensing current according to a conductive state of the upper-bridge switch and the... Agent: Upi Semiconductor Corp.

20120126776 - Voltage smoothing circuit: A voltage smoothing circuit is configured to smooth a voltage outputted from a power supply portion. The voltage smoothing circuit includes first and second smoothing capacitors, a first balancing resistor, and a second conduction regulating portion. The first smoothing capacitor and the second smoothing capacitor are connected in series to... Agent: Daikin Industries, Ltd.

20120126778 - Charge pump circuit with pulse-width modulation: Each switching element of a charge pump circuit of a voltage regulator comprises a relatively small-sized MOS transistor associated with a relatively large-sized MOS transistor connected in parallel. Only the small transistors are switched in a first mode of operation, while the large transistors are switched in a second mode... Agent: St-ericsson Sa

20120126777 - Dc-dc converter circuit: A DC-DC converter circuit includes first to sixth semiconductor switches and an inductor. The first to third semiconductor switches are connected to one end of the inductor. The fourth to sixth semiconductor switches are connected to the other end of the inductor. A first voltage supply is connected to opposite... Agent:

20120126779 - Power control system: A system and method for controlling performance and/or power based on monitored performance characteristics. Various aspects of the present invention may comprise an integrated circuit comprising a first circuit module that receives electrical power. A second circuit module may monitor one or more performance characteristics of the first circuit module... Agent: Broadcom Corporation.

20120119714 - Method and apparatus for load identification: A load communication device and method is provided, that identifies and transmits to a PSU the load requirement to operate a load device that is powered by the PSU, by analyzing the characteristics of current applied to the load device by a given input voltage generated by the PSU. The... Agent:

20120119715 - Control circuitry in a dc/dc converter for zero inductor current detection: A converter controller for discharge of a coil used in a DC/DC converter including a voltage detector connected to monitor a state of a diode connected between the coil and ground and an offset comparator, having an adjustable offset, for causing a coil discharge path to be interrupted. The comparator... Agent:

20120119716 - Power supply circuit: A power supply circuit is disclosed in embodiments of the present invention, which includes: a voltage output device, configured to generate an output voltage; a parasitic resistance, connected between an output end of the voltage output device and an external load, where two ends of the parasitic resistance generate a... Agent: Huawei Technologies Co., Ltd.

20120119719 - Power supply circuit: According to one embodiment, a power supply circuit includes a switching control unit that compares a DA converted value of the high order bit of a digital compensation value calculated from an output voltage of a smoothing circuit with a detection value of a current flowing into the smoothing circuit... Agent: Kabushiki Kaisha Toshiba

20120119718 - Self-adaptive current-mode-control circuit for a switching regulator: A current-mode-control circuit for a switching regulator is provided. The circuit includes a first transistor coupled to a power supply voltage, a second transistor, and an inductor. The circuit further includes a slope compensation generation circuit coupled to the output of the current control circuit through a feedback loop, the... Agent:

20120119717 - Voltage regulator module with power gating and bypass: Mechanisms are provided for either power gating or bypassing a voltage regulator. Responsive to receiving an asserted power gate signal to power gate the output voltage of the voltage regulator, at least one of first control circuitry power gates the output voltage of a first circuit or second control circuitry... Agent: International Business Machines Corporation

20120119720 - Load transient booster: A switching regulator comprises a PWM controller that controls switching of a power converter via a PWM control signal. The switching regulator detects load transients in the load driven by the power converter. Responsive to the detection of a load transient, the switching regulator resets a PWM clock synchronously with... Agent: Iwatt Inc.

20120119721 - Circuit arrangement including voltage supply circuit: A circuit arrangement comprising a first semiconductor switching element, which has a load path and a drive terminal. A voltage supply circuit, is provided including an inductance connected in series with the load path of the first semiconductor switching element, and a capacitive charge storage arrangement, which is connected in... Agent: Infineon Technologies Ag

20120119722 - Power converter control method: Optimizes the operation and control of electric generators against events produced in the power grid, such as voltage dips or overvoltages, comprising the following steps: detecting that the DC bus voltage level (Vbus) (301) exceeds the maximum operating limit established in normal conditions; enabling activation permission of the chopper (201);... Agent:

20120119723 - Voltage conversion apparatus and electrical load driving apparatus: A voltage conversion apparatus is disclosed in which a current passes through first and second loop circuits alternately in accordance with ON/OFF operation of a first switching element provided in the first circuit. The direction of a magnetic field through the first loop circuit formed at the ON operation is... Agent: Toyota Jidosha Kabushiki Kaisha

20120119724 - Current generating circuit: A first current source generates a first current having positive temperature characteristics. A second current source generates a second current. A first current mirror circuit generates a third current by multiplying, by a first coefficient, the base current of a compensation transistor configured as an NPN bipolar transistor arranged on... Agent: Rohm Co., Ltd.

20120112711 - Power factor controller with error feedback, and a method of operating such a power factor controller: P

20120112713 - Method and apparatus for automatic network stabilization in electric power supply systems using at least one converter: Method and apparatus for automatic stabilization of an electric power supply network system comprising a network and at least one converter adapted to exchange maximum transferrable power with the network by changing the real current through a stabilizing controller, whereby the necessary direction of current change is determined through real-time... Agent:

20120112712 - Power factory correction circuit and power supply having the same: A power supply includes an EMI filter removing noises from an input signal, a rectifying circuit rectifying and outputting the input signal, and a power factor correction circuit varying a magnitude in output voltage according to a duty ratio of a driving signal while generating an output voltage by an... Agent: Samsung Electro-mechanics Co., Ltd.

20120112714 - Reactive power compensation in electrical power system: A power compensation system 108 for compensating for the reactive power requirements in an electricity system 100 is provided. The reactive power compensation system 108 includes a static synchronous compensation unit 202, a harmonic current elimination unit 204 and a compensation control unit 206. The static synchronous compensation unit 202... Agent:

20120112716 - Power regulation for large transient loads: Methods and circuits for power supply arrangement and control are disclosed herein. In one embodiment, a power supply can include: (i) an input capacitor coupled to an input terminal that is coupled to a power source, where the power source provides power that is constrained by a predetermined limit; (ii)... Agent: Silergy Technology

20120112715 - Snubber circuit for buck converter: A snubber circuit for decreasing a voltage spike of a buck converter includes a resistor unit, a capacitor unit, a detecting unit, and a control unit. The resistor unit provides multiple groups of resistance values. The capacitor unit provides multiple groups of capacitance values. The detecting unit detects voltage spikes... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120112717 - Two-stage power supply with feedback adjusted power supply rejection ratio: The present invention discloses a power supply comprising: a switching regulator circuit converting an input voltage to an intermediate voltage; a low dropout linear regulator circuit converting the intermediate voltage to an output voltage so as to supply a load current to a load; and a feedback control circuit which... Agent: Richtek Technology Corporation

20120112718 - Low-dropout regulator: The invention proposes a low-dropout voltage regulator comprising an output terminal for providing an output voltage (Vout) regulated as a function of a reference voltage, and for providing an output current (Iout), and additionally comprising an output current limiting unit (LIMIT3), with said unit comprising:—replication means for replicating the output... Agent:

20120112719 - Rectifier circuit: A rectifier circuit includes: a switching circuit having an input end, an output terminal and a control end, wherein the input end of the switching circuit receives an input voltage; a control circuit electrically connected to the control end of the switching circuit, wherein, when a load current is smaller... Agent: Inventec Corporation

20120112720 - Switching power supply with self-optimizing efficiency: A switching power supply is provided that includes: input terminals for the uptake of an input power, output terminals for providing an output power, a circuit disposed between the input and output terminals for transforming the input power and having at least one controllable switch, a control unit for controlling... Agent:

20120112721 - Synthetic ripple regulator with frequency control: A synthetic ripple regulator including frequency control based on a reference clock. The regulator includes an error network, a ripple detector, a combiner, a ripple generator, a comparator network and a phase comparator. The error network provides an error signal indicative of relative error of the output voltage. The ripple... Agent: Intersil Americas Inc.

20120112724 - Charge pump circuit and operation control method thereof: A charge pump circuit which steps down an input voltage inputted from an input terminal and outputs it as a step-down output voltage from a step-down output terminal, and steps up the input voltage and outputs it as a step-up output voltage from a step-up output terminal, includes: a voltage... Agent: Ricoh Company, Ltd.

20120112723 - Loosely regulated feedback control for high efficiency isolated dc-dc converters: The improved DC-DC converter apparatus includes a primary side circuit and a secondary side circuit that is galvanically isolated from the primary. The primary side induces a voltage in the secondary side that provides an output voltage for driving POLs. A controller in the primary senses a reflected output voltage... Agent: Tdk - Lambda Corp.

20120112722 - Power supply circuit: A power supply circuit includes a first-stage circuit and a second-stage circuit. The first-stage circuit is used for converting an input voltage into a DC voltage. The second-stage circuit includes a main power conversion circuit for converting the DC voltage into a first output voltage, a first standby power conversion... Agent: Delta Electronics (thailand) Public Co., Ltd.

20120112725 - Circuit and method for voltage regulator output voltage trimming: The present disclosure discloses a voltage regulator comprising a trimming circuit. The present disclosure also discloses a method for trimming an output voltage of a voltage regulator. In one embodiment the voltage regulator may comprise a power conversion module, a feedback and trimming module and a control module. The voltage... Agent:

20120112726 - Power supply controller: A power supply controller includes a power supply section, a power supply controlling section connected to the power supply section, a starter switch being switched selectively to a first status and a second status, a o power switch being switched selectively to a first status and a second status, a... Agent:

20120112727 - Electric current measuring device, electric current measuring method, and electric current measuring program: A current measurement device has a rectification unit rectifying an alternating-current signal, an A/D conversion unit converting an analog signal corresponding to a signal obtained by the rectification into a digital signal, an addition unit for adding digital signals corresponding to alternating-current signals during a sampling period among the digital... Agent: Yamatake Corporation

20120112728 - Reduced parts count isolated ac current switching and sensing: An appliance's control and sensing circuit selectively applies AC electrical power to a load (72). The circuit includes a relay (44) having contacts (52) connected in series between an AC power source and the load (72). When energized, the relay's electromagnetic coil (54) changes the contacts (52) to supplying electrical... Agent:

20120112729 - In-rush limiter circuit for a driver module: A limiter circuit includes a voltage rail having an input and an output, the input receiving an applied input voltage, a switching device in electrical communication with the voltage rail to selective control an electric current flowing through the output of the voltage rail, limiter capacitor in electrical communication with... Agent: Visteon Global Technologies, Inc.

20120112730 - Arrangement of a stepping switch on a control transformer: The invention relates to the arrangement of a stepping switch on a control transformer, wherein either only the mechanical contact system (8) of the stepping switch or also its load changeover switch (7) is or are arranged within the tank (1) of the transformer, under the transformer cover (4) and... Agent:

20120112731 - Load sensing high efficiency transformer assembly: A load sensing, high efficiency, modular transformer assembly for use in power distribution networks. The control of each module of the modular assembly of high efficiency transformers results in considerable energy savings when compared to conventional transformers. At least two of the transformers have different efficiencies, one higher than the... Agent: Warner Power, LLC

20120112732 - Capacitive impedance decoupling ac power controller: from I=2πf(3C)Vs to 2πf(2C)Vs and to 2πfCVs amps, reducing the transmitted current I. The sensitivity of the capacitive impedance decoupling AC power controller can be increase by providing a plurality of sensitivity power control zero loss capacitors 12a of desired lower capacitance values than the capacitance values of the plurality... Agent:

20120112733 - Hall effect device: A Hall effect device includes a Hall element and a voltage regulator. The Hall element has first and second bias terminals, or nodes. The Hall effect device maintains, or regulates, a voltage at a point within the Hall element between the first and second bias terminals at about a constant... Agent: Texas Instruments Incorporated

20120105023 - Automatic ac bus voltage regulation for power distribution grids: A system for automatically regulating voltage on a distribution-level AC bus having an actual voltage and a nominal voltage includes an electronic power converter connected to the distribution-level AC bus. The system generates a feedback signal representative of the actual voltage of the distribution-level AC bus and produces an input... Agent: Satcon Technology Corporation

20120105024 - Feedback regulating circuit: A feedback regulating circuit provides a regulated voltage to a multi-output circuit that outputs a plurality of output voltages. The feedback regulating circuit includes a voltage control unit, coupled to the plurality of output voltages, for generating a first voltage according to the plurality of output voltages and outputting a... Agent: Mstar Semiconductor, Inc.

20120105025 - Frequency compensation circuit for voltage regulator: A frequency compensation circuit for a voltage regulator is provided in embodiments of the present invention. The frequency compensation circuit mainly includes a first transconductance operational amplifier circuit, a second transconductance operational amplifier circuit, and a third transconductance operational amplifier circuit cascaded sequentially, where the first transconductance operational amplifier circuit... Agent: Huawei Technologies Co., Ltd.

20120105026 - Safe electric power regulating circuit: A safe electric power regulating circuit is connected between a power supply and a voltage boost/buck circuit to regulate the output voltage by the power supply to have a target voltage through the voltage boost/buck circuit. A switching device includes a switch unit, a first diode, and a first capacitor.... Agent:

20120105027 - High efficiency, thermally stable regulators and adjustable zener diodes: This document discusses, among other things, apparatus for high-efficiency, thermally-compensated regulators. In an example, a regulator can include a zener diode having a first temperature coefficient, the zener diode configured couple to an output and to provide at least a portion of a reference voltage, a transistor having a second... Agent:

20120105028 - Power supply with dynamic input current suppression: A power supply is described, which comprises a first stage DC-to-DC voltage conversion block, and a second stage voltage conversion block having a feedback circuit to regulate the output voltage (Vout) thereof so as to reduce changes in the output voltage as the output current (Iout) drawn by a load... Agent: Telefonaktiebolaget L M Ericsson (publ)

20120105030 - Control circuit and method for a current mode controlled power converter: A control circuit and method for a current mode controlled power converter to convert an input voltage into an output voltage, dynamically adjust the peak or the valley of a ramp signal depending on either or both of the input voltage and the output voltage. Under different conditions of the... Agent: Richtek Technology Corp.

20120105031 - Switching power-supply unit: A switching power-supply unit which controls current flowing through an inductor in a switchable manner and outputs a voltage different from input voltage, the unit including: a terminal-potential detecting circuit which monitors terminal potential of the inductor and outputs a predetermined signal; a comparator which compares an output feedback voltage... Agent: Mitsumi Electric Co., Ltd.

20120105029 - Switching regulator: A switching regulator includes: switching transistors configured to perform switching according to a control signal; an inductor connected to the switching transistors; a control mode switch unit configured to switch between a first control mode and a second control mode based on a direction in which a current flows through... Agent: Mitsumi Electric Co., Ltd

20120105032 - System and method for providing an active current assist with analog bypass for a switcher circuit: A system and method are disclosed for providing an active current assist with analog bypass for a switcher circuit. An active current assist circuit is coupled to a buck regulator circuit, which includes a switcher circuit, an inductor circuit and a capacitor circuit. The active current assist circuit includes an... Agent: National Semiconductor Corporation

20120105033 - Light amount detecting apparatus, and light amount information processing apparatus: A light amount detecting apparatus includes: a photoelectric converting element converting quantity of light inputted to current; a current/voltage converting device having a positive input terminal connected to a first terminal of the photoelectric converting element, a negative input terminal connected to a second terminal of the photoelectric converting element,... Agent: Pioneer Corporation

20120105035 - Buck circuit having fast transient response mechanism and operation of the same: A buck circuit having a fast transient response mechanism is provided. The buck circuit comprises a high side MOS, a low side MOS, a transient control module and an operation control module. The low side MOS is connected to the high side MOS at a connection point for generating an... Agent: Himax Analogic, Inc.

20120105034 - Controlling a dead time of a switching voltage regulator: Embodiments for at least one method and apparatus of controlling a dead time of a switching voltage regulator are disclosed. One method includes generating a regulated output voltage based upon a switching voltage. The method included generating the switching voltage through controlled closing and opening of a series switch element... Agent: R2 Semiconductor, Inc.

20120105037 - Voltage conversion device capable of enhancing conversion efficiency: A voltage conversion device capable of enhancing conversion efficiency includes a charge pump for generating output voltage linear to input voltage according to the input voltage, a feedback unit for generating a feedback signal according to the output voltage generated by the charge pump, and a regulating unit for outputting... Agent:

20120105036 - Voltage generation circuit which is capable of executing high-speed boost operation: According to one embodiment, a voltage generation circuit includes a first boost circuit, a voltage division circuit, a first detection circuit, a capacitor and a first switch. The first boost circuit outputs a first voltage. The voltage division circuit divides the first voltage. The first detection circuit is configured to... Agent:

20120105038 - Clock phase shifter for use with buck-boost converter: A buck boost converter generates a regulated output voltage responsive to an input voltage and switching control signals. Switching control circuitry generates the switching control signals responsive to the regulated output voltage, a maximum duty cycle signal and a mode signal. Mode control circuitry generates the maximum duty cycle signal... Agent: Intersil Americas Inc.

20120105039 - Delay block for controlling a dead time of a switching voltage regulator: Embodiments for at least one method and apparatus for controlling timing of switch control signals of a switching voltage regulator disclosed. One method includes generating a regulated output voltage based upon a switching voltage, generating the switching voltage through controlled closing and opening of a series switch element and a... Agent: R2 Semiconductor, Inc.

20120105040 - Switched inductor dc-dc converter: A direct current to direct current (DCDC) voltage converter is described comprising a controller and at least one converter circuit. The converter circuit comprises at least first and second inductors, each having an input and an output; a first input switch connected to the input of the first inductor; a... Agent:

20120105041 - Discontinuous conduction current mode maximum power limitation photovoltaic converter: A discontinuous conduction current mode maximum power limitation photovoltaic converter connects to a ground and a solar cell having a temperature compensation signal and an output power and being solarized and comprises a direct current/direct current voltage converter and a maximum power control circuit. The direct current/direct current voltage converter... Agent: National Cheng Kung University

20120105042 - Switching apparatus: A switching apparatus is disclosed that includes a first loop circuit configured to include a switching element, an inductive component and a capacitor; and a second loop circuit configured to share the inductive component with the first loop circuit, wherein the capacitor is inserted in series with the inductive component... Agent: Toyota Jidosha Kabushiki Kaisha

20120105044 - Circuit arrangement and method for inductive energy transfer: A circuit arrangement for the inductive transfer of energy is disclosed. The circuit arrangement includes an oscillator; a power supply for supplying the oscillator with energy and having a complex input resistance; and a device for detecting the inductive load of the oscillator and for modifying the complex input resistance... Agent: Braun Gmbh

20120105043 - Control of multi-level supply stage: There is described a buck-boost converter comprising: a voltage source; an inductor, wherein a first terminal of the inductor is switchably connected to the voltage source; and a plurality of capacitors switchably connected to a second terminal of the inductor, wherein a respective plurality of output voltages are formed across... Agent: Nujira Limited

20120105045 - Controlling a skew time of switches of a switching regulator: Embodiments for methods and apparatuses for controlling a skew time of switches of a switching voltage regulator are disclosed. One method includes generating a switching voltage through closing and opening of a series switch and a shunt switch as controlled by a series switch control signal and a shunt switch... Agent: R2 Semiconductor, Inc.

20120105046 - Current mirror using ambipolar devices: Current mirrors have been used in analog electronics with both CMOS and bipolar transistors for many years. Conventional current minor designs, though, may not be suitable for emerging technology transistors, such as graphene transistors, carbon nanotube (CNT) transistors, or other ambipolar transistors. Here, a current minor has been provided that... Agent: Texas Instruments Incorporated

20120105047 - Programmable low dropout linear regulator: The present invention provides a programmable low dropout linear regulator using a reference voltage to convert an input voltage into a regulated voltage according to a control signal. The programmable low dropout linear regulator includes an operational amplifier having a negative input coupled to receive the reference voltage, a first... Agent: National Chung Cheng University