Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems November recently filed with US Patent Office 11/12

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
11/29/2012 > 28 patent applications in 21 patent subcategories. recently filed with US Patent Office

20120300499 - Control circuit of a switched-mode power converter and method thereof: A method for controlling voltage crossing a power switch of a switched-mode power converter is disclosed. The method comprises the steps of: controlling a switch frequency of a power switch of a switched-mode power converter to a first frequency as activating the switched-mode power converter; and changing the switch frequency... Agent:

20120300500 - Coupled inductor with improved leakage inductance control: An M-winding coupled inductor includes a first end magnetic element, a second end magnetic element, M connecting magnetic elements, and M windings. M is an integer greater than one. Each connecting magnetic element is disposed between and connects the first and second end magnetic elements. Each winding is wound at... Agent: Volterra Semiconductor Corporation

20120300501 - Dc power supply: A DC power supply including a resonant circuit on a secondary side of a transformer suppresses a surge voltage during power recovery of diodes constituting a rectifier circuit, correctly estimates a load current from a secondary current of the transformer, and adjusts supplied power when a load is light. The... Agent: Hitachi, Ltd.

20120300502 - Power supply apparatus: A high-efficiency power supply apparatus is provided in light of the reduction of the switching loss. The power supply apparatus connected between the AC power supply and the DC load converts the AC power supplied from the AC power supply to the DC power and supplies it to the DC... Agent: Hitachi Computer Peripherals Co. Ltd.

20120300503 - Control circuit with zvs-lock and asymmetrical pwm for resonant power converter: A control circuit for a resonant power converter and a control method thereof are disclosed. The control circuit comprises a first transistor and a second transistor switching a transformer through a resonant tank. A controller receives a feedback signal for generating a first switching signal and a second switching signal... Agent: System General Corp.

20120300504 - Parallel-connected resonant converter circuit and controlling method thereof: The configurations of a parallel-connected resonant converter circuit and a controlling method thereof are provided in the present invention. The proposed circuit includes a plurality of resonant converters, each of which has two input terminals and two output terminals, wherein all the two input terminals of the plurality of resonant... Agent: Delta Electronics, Inc.

20120300505 - Power adapter and method of controlling power adapter operated in energy saving mode: A power adapter comprises a main power circuit, a feedback circuit, an ID detection circuit and a switch controller. The feedback circuit is coupled to the main power circuit for detecting the DC output voltage and issuing a feedback signal. The ID detection circuit is coupled to the feedback circuit... Agent: Delta Electronics, Inc.

20120300506 - Power supply device and driving method thereof: The present invention relates to a power supply device generating an output power by using an AC line voltage generated through rectification of an AC input, and a driving method thereof. The power supply device controls the switching operation of the power switch by using a sensing voltage corresponding to... Agent:

20120300507 - Systems and methods for reducing emi in switch mode converter systems: Switch mode power converter system and method thereof. The system includes one or more isolation boxes including at least a first isolation box, an input primary winding for receiving an input signal for the switch mode power converter system, and an output secondary winding for generating an output signal for... Agent: On-bright Electronics (shanghai) Co., Ltd.

20120300508 - Systems and methods for flyback power converters with switching frequency and peak current adjustments: System and method for regulating a power converter. The system includes a comparator configured to receive a first signal and a second signal and generate a comparison signal based on at least information associated with the first signal and the second signal. The first signal is associated with at least... Agent:

20120300509 - Power supply system and method with electronic high-voltage transformer: A power supply system with an electronic high-voltage transformer includes an input module for receiving a current and eliminating disturbance in the current, a transformer module for transforming the received current into a low-voltage direct current, a power supply module for transforming the low-voltage direct current into a high-frequency alternating... Agent:

20120300510 - Method and apparatus for controlling a dc-transmission link: A method for controlling a DC-transmission link for transmitting electric power from a power production unit connected to an AC-DC converter at a first side of the DC-transmission link to a utility grid connected to a DC-AC converter at a second side of the DC-transmission link is provided. The method... Agent:

20120300511 - Ac converter, ac converting method, and storage medium: An AC converter includes: a switching section 101, which converts the input AC voltage in response to a control signal and which outputs the converted voltage to a phase that has been selected in accordance with the control signal; a filter section 104, which filters out high frequency components from... Agent: Panasonic Corporation

20120300512 - Device for power conversion using switching element: A converter is provided as a power conversion device. The converter includes a switching circuit that performs switching on the basis of switching signals; and a control circuit that changes switching frequency of switching signals in a predetermined pattern with the elapse of time, and repeats the changes in switching... Agent: Denso Corporation

20120300514 - Method and device for determining a control scheme for an active power filter: A method is provided for determining a control scheme for a neutral point clamped (NPC) voltage source converter (VSC) with at least 3 levels and a topology of three bridge legs between each of three phases of a grid and a neutral point. Each leg includes at least four active... Agent: Alstom Technology Ltd

20120300513 - Wavelet modulated inverter: This invention relates to a method for generating switching signals for inverters using wavelet basis functions as a means to determine switching times, pulse duration, shifting and scale; and to a three phase, six pulse wavelet modulated inverter employing the method as a switching technique.... Agent:

20120300515 - Ac/dc converter with a pfc and a dc/dc converter: Disclosed is a power converter including a power factor corrector and a DC/DC converter and a power conversion method.... Agent: Infineon Technologies Ag

20120300516 - Power supply module: A power supply module including a cable and a power conversion device is provided. The cable includes a power line and a detection line and a terminal thereof connected to an electronic device, wherein the detection line transmits a first electrical numerical energy value of first electrical energy received by... Agent: Compal Electronics, Inc.

20120300517 - Power factor corrector with high power factor at low load or high mains voltage conditions: A power factor corrector raises power factor at low loads or high mains voltages by modifying the switch timing or the current received by the power converter. It achieves this by increasing the switch-on time of a control switch during the falling time so that the majority of the switch-on... Agent: Nxp B.v.

20120300518 - Two-terminal current controller and related led lighting device: A two-terminal current controller controls a first current flowing through a parallel-coupled load. During a rising period of a rectified AC voltage, when a load voltage does not exceed a first voltage, the two-terminal current controller operates in a first mode. When the load voltage exceeds the first voltage but... Agent:

20120300519 - Multi-phase active rectifier: A multi-phase active rectifier includes a plurality of active switching devices selectively controlled to convert a plurality of alternating current (AC) input voltages to a direct current (DC) output voltage. Control of the active switching devices is provided by a controller that includes an outer control loop for regulating the... Agent: Hamilton Sundstrand Corporation

20120300520 - Switching mode power supply with synchronous rectifying control circuit: A switching mode power supply comprising a synchronous rectifying control circuit. The synchronous rectifying control circuit comprising an integrating circuit, a first comparison circuit and a logic circuit. The integrating circuit is configured to provide an integrating signal. The first comparison circuit comprises a first input coupled to the output... Agent: Chengdu Monolithic Power Systems Co., Ltd.

20120300521 - Easy-to-assemble structure of power converter: An easy-to-assemble structure of a power converter includes a control circuit board, semiconductor modules with power terminals and control terminals extending therefrom, and a capacitor to smooth voltage to be applied to the semiconductor modules. The capacitor includes capacitor devices coupled to the power terminals and voltage measuring terminals joined... Agent: Denso Corporation

20120300523 - Power supply device: A power supply device includes: a magnetic-coupling-type multi-phase converter having first and second chopper circuits that respectively adjust respective currents flowing in first and second reactors magnetically coupled to each other, and performing voltage conversion between a DC power supply and a load; and a control circuit. The control circuit... Agent: Toyota Jidosha Kabushiki Kaisha

20120300522 - Semiconductor device, power semiconductor module and power conversion device equipped with power semiconductor module: A semiconductor device includes: a case with an opening formed thereat; a semiconductor element housed inside the case; a first conductor plate housed inside the case and positioned at one surface side of the semiconductor element; a second conductor plate housed inside the case and positioned at another surface side... Agent: Hitachi Automotive Systems, Ltd.

20120300524 - Method and apparatus for generating single-phase power from a three-phase resonant power converter: A method and apparatus for providing AC power. In one embodiment, the apparatus comprises a cycloconverter controller for determining a DC value based on a reference waveform and a three-phase cycloconverter, coupled to the cycloconverter controller, for selectively coupling, based on the DC value, an alternating current to an AC... Agent: Enphase Energy, Inc.

20120300525 - Converter arrangement and method in connection with converter arrangement: An exemplary converter arrangement and method in connection with the arrangement includes a converter arranged in a closed container or similar structure. The container has a high voltage compartment and a low voltage compartment. The high voltage compartment includes a transformer connectable to a network to be supplied and the... Agent: Abb Oy

20120300526 - Power adapter apparatus: A power adapter apparatus comprises an AC power input adapted to receive AC power, an AC-to-DC converter, a switch, a timer, and a casing at least partially enclosing the AC-to-DC converter, the switch and the timer. The AC-to-DC converter is configured to convert the AC power to DC power. The... Agent:

11/22/2012 > 15 patent applications in 11 patent subcategories. recently filed with US Patent Office

20120294044 - High-voltage power supply: Provided is a high-voltage power supply including a board having at least one bent portion separating a first region of the board from a second region of the board, the first region not being coplanar with the second region of the board; a first circuit, on the first region of... Agent: Samsung Electronics Co. Ltd.

20120294043 - Parasitic power supply and sensor apparatus including a power supply: A parasitic power supply derives power from its proximity to an electrical power conductor. The power supply includes a transformer having a coil disposed on a core structured to be disposed parallel to the power conductor. The coil has a voltage induced by current flowing in the power conductor. A... Agent:

20120294045 - Method and apparatus for controlling resonant converter output power: A method and apparatus for controlling power conversion. In one embodiment, the method comprises computing a voltage ratio based on a voltage conversion in a resonant converter; comparing the voltage ratio to a threshold; and controlling, independent of switching frequency of the resonant converter, power output from the resonant converter... Agent: Enphase Energy, Inc.

20120294046 - Power supply apparatus: A second control circuit is configured to switch a pulse signal to a level which turns off a second switching transistor when a coil current that flows through a primary winding reaches a predetermined threshold current. The second control circuit is configured to start a switching operation when a power... Agent: Rohm Co., Ltd.

20120294047 - Resonant converter: A resonant converter includes first and second input terminals for applying an input voltage and first and second output terminals for providing an output voltage. A transformer includes a primary winding and a secondary winding, where both the primary winding and the secondary winding have a first and a second... Agent: Infineon Technologies Ag

20120294048 - Start-up circuit for a power adapter: A start-up circuit for a power adapter and method of operating the same. In one embodiment, the power adapter includes a start-up circuit configured to provide an initial bias voltage for the power adapter. The power adapter also includes a crowbar circuit configured to turn on the start-up circuit upon... Agent: Power Systems Technologies, Ltd.

20120294050 - Inverter generator: In an inverter generator having a first, second and third inverters, a first, second and third controllers adapted to control turning ON/OFF of switching elements thereof and to operate the first inverter as a master inverter and the second and third inverters as slave inverters, a three-phase output terminal, a... Agent: Honda Motor Co., Ltd.

20120294049 - Parallel running control apparatus for inverter generators: In a parallel running control apparatus for an inverter generator A having a first, second and third inverters each connected to three windings wound around an alternator driven by an engine and converts alternating current outputted therefrom to direct/alternating current to output alternating current, and first, second and third controllers... Agent: Honda Motor Co., Ltd.

20120294051 - High-voltage startup circuit: A system including a power transistor configured to receive an alternating current (AC) line voltage and a control circuit. During a rising portion of a half cycle of the AC line voltage, the control circuit is configured to turn on the power transistor when the AC line voltage reaches a... Agent:

20120294052 - Monotonic pre-bias start-up of a dc-dc converter: The power conversion module includes a power converter coupled to provide a DC output voltage from an input voltage source. The power converter may have primary and secondary stages, and the power converter may also provide a DC output voltage that is electrically isolated from the input voltage source. Additionally,... Agent: General Electric Co.

20120294053 - Method for protecting a converter and a converter implementing the method: A method for protecting a converter device comprises the steps of: detecting an alternating current signal; when the alternating current signal is abnormal, generating an activating signal according to the abnormal alternating current signal; generating a control signal according to the activating signal; and controlling at least one synchronous rectifying... Agent: Delta Electronics (shanghai) Co., Ltd.

20120294054 - Method and apparatus for wireless power transmission using power receiver: A rectifier is provided. The rectifier includes a first rectification unit having an anode connecting to a negative radio frequency (RF) port and a cathode connecting to a positive direct current (DC) port, a second rectification unit having an anode connecting to a positive RF port and a cathode connecting... Agent:

20120294055 - Power detector: A power detector having a differential input unit and a differential output unit. In one aspect, the invention may be a power detector including a differential input unit including a differential input terminal to which an AC signal is input and a DC voltage generator which generates and outputs a... Agent:

20120294057 - Resonant power conversion circuit: An apparatus and system for power conversion. In one embodiment, the apparatus comprises a transformer having a primary winding and a plurality of secondary windings; and a cyclo-converter comprising a plurality of switch pairs for converting an alternating current to an AC current, wherein each switch pair in the plurality... Agent: Enphase Energy, Inc.

20120294056 - Switching loss reduction in converter modules: The invention relates to converters for converting a DC input voltage a DC or an AC output voltage. The converters have a parasitic inductance. The converters comprise at least one switching element connected to an input terminal for providing a first voltage at an output terminal. In order to allow... Agent: Vincotech Gmbh

11/15/2012 > 14 patent applications in 13 patent subcategories. recently filed with US Patent Office

20120287678 - Non-isolated resonant converter: A non-isolated resonant converter is provided. The provided non-isolated resonant converter includes a switch circuit, a resonant circuit and a rectifying-filtering circuit. The switch circuit, the resonant circuit and the rectifying-filtering circuit are sequentially connected. The resonant circuit includes an auto-transformer, a capacitor and an inductor, wherein the capacitor and... Agent: Fsp Technology Inc.

20120287679 - Switching techniques to reduce current overshoot in a dc to dc converter: A DC/DC converter system includes gate control circuitry, a transformer, a second stage, and soft start control circuitry. The gate control circuitry is configured to generate a first and a second gate control signal configured to open and close first and second switches of an inverter circuitry, respectively, to generate... Agent:

20120287680 - Systems and methods for constant current control in an llc resonant power regulator: One embodiment relates to an LLC resonant power converter system. The system includes a transformer comprising a primary inductor and a secondary inductor and a switch control stage configured to generate a plurality of switching signals having a duty-cycle. The system also includes an input stage comprising the primary inductor... Agent:

20120287681 - Switching delay controller for a switched mode power supply: A switching delay controller (150) for controlling a switching delay between the switching of a first and a second switching element (Q1 to Q4) in a switched mode power supply (300), the switched mode power supply comprising a feedback signal generator (140) operable to generate a feedback signal indicative of... Agent: Telefonaktiebolaget L M Ericsson (publ)

20120287682 - Switch mode power supply and control method thereof: In one embodiment, a switch mode power supply comprising a switch and a control circuit is disclosed. The control circuit may comprise a multi-function pin configured to receive a first current sampling signal and a first voltage sampling signal. A first comparing signal may be provided by comparing the first... Agent: Chengdu Monolithic Power Systems Co., Ltd.

20120287683 - Method and apparatus for controlling electric grid in islanding mode: An exemplary method for controlling transfer of electrical power in island mode in an arrangement having a converter and a load connected to the converter through a filter. The method including determining voltage reference components for one or more frequency components of an output voltage of the converter. An effect... Agent: Abb Oy

20120287684 - Converter: A converter may include a transformer; a first circuit arrangement coupled to a first transformer side; a second circuit arrangement coupled to a second transformer side, wherein the second circuit arrangement is configured to provide an output voltage; a first coupler configured to provide information about the output voltage to... Agent: Infineon Technologies Ag

20120287685 - Converter: A converter may include a start-up circuit having a switch circuit coupled to a reference potential terminal and an input circuit coupled to an input voltage, wherein the input circuit is coupled to the start-up circuit such that in case that at least one of the input voltage is lower... Agent: Infineon Technologies Ag

20120287686 - Matrix converter: A matrix converter according to an embodiment includes a control unit generates a highest phase-to-phase voltage among load side phase-to-phase voltages by controlling bidirectional switches that connect phases with respect to the highest phase-to-phase voltage and phases with respect to a highest phase-to-phase voltage among AC-source side phase-to-phase voltages. Moreover,... Agent: Kabushiki Kaisha Yaskawa Denki

20120287687 - Power converter module: A power converter module is disclosed, which is an all-digital module. The power converter module includes a reference voltage generation unit, a voltage loop control unit, a current loop control unit, an input voltage compensation unit, and a pulse width modulation generation unit, to transfer input power to stable output... Agent:

20120287688 - Four quadrant bidirectional switch: A four quadrant bidirectional switch. In one embodiment, the four quadrant bidirectional switch comprises a first switch, a second switch, and a third switch, wherein (i) the first and second switches are normally-off switches, (ii) the third switch is a dual-gate, bidirectional, normally-on switch, and (iii) the first, the second,... Agent: Enphase Energy, Inc.

20120287689 - Synchronous rectifier disabling arrangement: A power supply receives an alternating current input that is rectified by a rectifier. The rectified output voltage is coupled to a load and a microprocessor during both a run mode operation and a standby mode operation. The rectifier provides synchronous rectification by an included MOSFET, during the run mode... Agent:

20120287690 - Power conversion apparatus and methods employing variable-level inverters: A power conversion apparatus, such as an uninterruptible power supply, included first and second DC busses, a neutral node and an inductor configured to be coupled to a load. The apparatus further includes an inverter circuit coupled to the first and second DC busses, to the neutral node and to... Agent: Eaton Corporation

20120287691 - Battery substitute device for power tools: A battery substitute device for providing an alternative power source for battery operated ‘cordless’ tools and similarly powered appliances. The battery substitute device is generally shaped like the battery pack it replaces and includes an AC-DC power converter powered by AC plug-in power through a flexible line and AC mains... Agent:

11/08/2012 > 16 patent applications in 15 patent subcategories. recently filed with US Patent Office

20120281433 - Power supply apparatus and controller: To measure input power as accurate as possible, a power supply apparatus includes an AC/DC converter that generates a direct-current internal power supply from an alternating-current commercial power supply, an output-voltage measurement unit that measures an output voltage of the internal power supply, an output-current measurement unit that measures an... Agent: Mitsubishi Electric Corporation

20120281435 - Dc-dc converter: A DC-DC converter (1) is provided having a resonant half-bridge circuit (2) and a transformer (TX1) that has a primary winding (P1) and a secondary winding (S1, S2) on a transformer core (4). The voltage converter (1) has a secondary circuit (3) with which the secondary winding (S1, S2) is... Agent: Minebea Co., Ltd.

20120281434 - Method and apparatus for controlling resonant power converter: A control circuit of a resonant power converter is disclosed. The control circuit comprises a first transistor and a second transistor for switching a transformer and a resonant tank comprising a capacitor and an inductor. A controller is configured to receive a feedback signal correlated to the output of the... Agent: System General Corp.

20120281436 - Isolated dc-to-dc voltage step-up converter: An isolated DC-to-DC voltage step-up converter is provided with four switches, an input inductor, an isolation transformer, two resonant inductors and two resonant capacitors and operates with two distinct intervals: ON-time interval and an OFF-time interval. The two half-wave sinusoidal resonant capacitor charge and discharge intervals, one during the ON-time... Agent: Cuks, LLC

20120281437 - Digital ic controller for switch mode power supply devices: A digital IC controller for switch mode power supplies, the IC controller having multiple inputs and multiple outputs as well as a digital interface. The IC controller can be configured using a configuration device in such a way that controller units and filter units preconfigured by the configuration device as... Agent: Erbe Elektromedizin Gmbh

20120281438 - Systems and methods for constant current control with primary-side sensing and regulation in various operation modes: System and method for regulating a power converter. The system includes a first signal processing component configured to receive at least a sensed signal and generate a first signal. The sensed signal is associated with a primary current flowing through a primary winding coupled to a secondary winding for a... Agent:

20120281439 - Flyback power supply with forced primary regulation: A power supply includes an energy transfer element having first, second and third windings. An input of the first winding is coupled to an input of the power supply and an output of the second winding is coupled to an output of the power supply. A secondary control circuit is... Agent: Power Integrations, Inc.

20120281440 - Isolated switch-mode power supply device: The present invention provides an isolated switch-mode power supply device capable of sufficiently reducing power consumption in a standby mode. An isolated switch-mode power supply device includes: a capacitor that supplies control power for controlling switching of a switching element; a first control unit that includes a constant current supplying... Agent: Shindengen Electric Manufacturing Co., Ltd.

20120281441 - Circuit for converting a direct current voltage to an alternating current voltage: A circuit for converting a direct current voltage into an alternating current voltage includes a buck converter, a resonant DC voltage/DC voltage converter, a DC voltage/AC voltage inverter, and a DC link capacitor. The buck converter generates a DC current according to an input voltage generated by a voltage source... Agent:

20120281442 - System and method for offsetting the input voltage unbalance in multilevel inverters or the like: The system for offsetting the input voltage unbalance in multilevel inverters or the like comprises a control unit operatively associated with a multilevel inverter for converting direct current into alternate current, the control unit being suitable for piloting the multilevel inverter for generating an output current depending on a reference... Agent: Metasystem Energy S.r.l.

20120281443 - Inverter device comprising a topology surveying a series of capacitors: An inverter device for feeding electrical energy from a DC-power source into a power grid includes a pair of bus lines to be connected to the DC-power source; a plurality of capacitors connected in series between the bus lines; a surveying topology surveying an integrity of the plurality of capacitors,... Agent: Sma Solar Technology Ag

20120281444 - Solar energy conversion and utilization system: A 1, 2 or 3-phase DC to AC converter system for reducing the cost of solar energy installations achieves cost reduction by eliminating low-frequency power transformers. One DC input polarity is selectively switched to an output terminal when the instantaneous AC output from a second output terminal is desired to... Agent:

20120281445 - Transformer unit: A transformer unit includes: a transformer which is mounted on a printed board, and which includes a bobbin around which at least a primary winding and a secondary winding are wound and a core which is inserted into a center of the bobbin; and a component holding portion configured to... Agent: Panasonic Corporation

20120281446 - Preventing load dump overvoltages in synchronous rectifiers,: In a method for reducing load dump overvoltages during operation of a synchronous rectifier for a polyphase alternating current having a number of inputs which correspond to the number of alternating current phases of the alternating current, and having at least two outputs for providing a direct current, an alternating... Agent:

20120281447 - Voltage converter and method of performing voltage conversion: A voltage converter includes a compensation unit, first and second control units, and an output voltage generation unit. The compensation unit selects compensation feedback voltage or output feedback voltage depending on an operation mode, and generates a compensation voltage based on the selected feedback voltage and a first reference voltage,... Agent: Samsung Electronics Co., Ltd.

20120281448 - Power factor correction circuit: The present invention relates to a power factor correction circuit, that can include: an inductor current detector that generates a sampling voltage signal, and sinusoidal half-wave current and voltage signals based on the sampling voltage signal; a mediate signal generator generating slope voltage and clock signals in response to the... Agent: Hangzhou Silergy Semiconductor Technology Ltd.

11/01/2012 > 12 patent applications in 12 patent subcategories. recently filed with US Patent Office

20120275195 - Low noise, highly isolated power supply: A power supply may include a power transformer having a primary winding and a secondary winding, one end of the secondary winding connected to ground, and a shielded isolation transformer having a third winding, a fourth winding, and a shield, wherein the third winding is connected to the secondary winding... Agent:

20120275196 - Multi-stage power inverter: An inverter for converting an input direct current (DC) waveform from a DC source to an output alternating current (AC) waveform for delivery to an AC grid includes an input converter, an output converter, an input controller, and an output controller. The input controller is configured to control the operation... Agent: Solarbridge Technologies, Inc.

20120275197 - Layouts of multiple transformers and multiple rectifiers of interleaving converter: The present invention relates to multi-phase parallel-interleaved converter circuits with each phase having two or more transformers and two or more rectifiers electrically coupled to the two or more transformers, and layouts of the transformers and the rectifiers of the multi-phase parallel-interleaved converter circuits. In the layouts, the multiple transformers... Agent: Delta Electronics (shanghai) Co., Ltd.

20120275198 - Transition mode charge control for a power converter: One embodiment relates to power conversion system. The system includes a converter configured to convert an input voltage to an output voltage, the converter comprising at least one switch that is controlled in response to an activation signal to provide current through an inductor. A transition mode controller is configured... Agent:

20120275199 - Switch-mode power supply controller and associated method: One embodiment of the present invention discloses a switch-mode power supply controller and associated method. In an embodiment, the controller comprises an on-time controller, an off-time controller, a switch control signal generator, and a jittering signal generator, wherein the jittering signal generator couples jitter into the on-time or the off-time... Agent: Chengdu Monolithic Power Systems Co., Ltd.

20120275200 - Resonant circuit inverter with controllable operating point: A resonant circuit inverter with a rectifier, a DC link circuit and an inverter including controllable switches. The resonant circuit inverter has a first control means, with which the operating point (Ap) of the resonant circuit inverter determined by a phase angle between an output current (Iist) and a voltage... Agent:

20120275201 - Grid-tie inverter: According to one embodiment, a grid-tie inverter includes: a inverter performing pulse width modulation for a DC voltage; a first capacitor circuit connected to an input side of the inverter so as to form a neutral point; a second capacitor circuit connected to an output side of the inverter so... Agent: Kabushiki Kaisha Toshiba

20120275202 - Series multiplex power conversion apparatus: A series multiplex power conversion apparatus includes a plurality of phases. Each of the plurality of phases includes a plurality of power conversion cells coupled in series to each other. Each of the plurality of power conversion cells includes a current detector configured to detect a current through one phase... Agent: Kabushiki Kaisha Yaskawa Denki

20120275203 - Ac-dc converter and method of controlling same: An AC-DC converter 1 has a main circuit and a control means 4; the main circuit includes a diode bridge circuit 3, a main inductor L1, a main switching element S1, a main diode D1, an auxiliary inductor L2, an auxiliary switching element S2, an auxiliary diode D2, and a... Agent:

20120275204 - Bridgeless power factor correcting circuits with two switches: Six, non-isolated, high-frequency, PWM dc-to-dc converters with two switches and bipolar output voltage are reported to perform power factor correction without requiring a bridge rectifier circuit on their input AC side. The first three of these converters have a voltage conversion ratio which is a singular function of the duty... Agent:

20120275205 - Power conversion apparatus and electric vehicle: The metallic case of a power conversion apparatus includes a casing having a side wall, as well as an upper case and a lower case, a first area being formed between a cooling jacket provided at the inner periphery of the side wall and the lower case, the metal base... Agent: Hitachi, Ltd.

20120275206 - Power adapters for powering and/or charging peripheral devices: A power adapter for a peripheral device such as portable electronics device is disclosed. The power adapter includes a housing that contains electrical components associated with the power adapter. The power adapter also includes a data port provided at a surface of the housing. The data port is configured to... Agent: Apple Inc.

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