Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems February patent applications/inventions, industry category 02/10

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.
02/25/2010 > patent applications in patent subcategories.

20100046250 - Dc-dc converter: A DC-DC converter includes a switching transistor connected to an inductor and a power input terminal, with the inductor connected to an output terminal, a synchronous rectification transistor connected to a junction node therebetween, a first electric current detector to detect whether or not an electric current flowing through the... Agent: Cooper & Dunham, LLP

20100046251 - Multiple-output switching power source apparatus: A multiple-output switching power source apparatus has a series resonant circuit connected in parallel with a switch Q2 and including a primary winding and a current resonant capacitor, a first rectifying-smoothing circuit rectifying and smoothing a voltage of a secondary winding in an ON period of the switch to provide... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100046252 - Apparatus for supplying isolated regulated dc power to electronics devices: Embodiments of the invention provide an off line DC-DC converter comprising a transformer (180) coupled to a monolithic integrated circuit (405). The transformer applies an input supply DC voltage (Vin) applied to a primary winding (181) of the transformer to produce an output supply DC voltage (Vout) provided from a... Agent: Robert D. Shedd, Patent Operations Thomson Licensing LLC

20100046253 - Control circuit for a switched-mode power supply with regulation based on the secondary-side current flow time period: A control circuit for a primary controlled switched-mode power supply that has a primary-side switch and a transmitter. It also relates to an associated switched-mode power supply. The control circuit can be connected to a control input of the primary-side switch so that the primary-side switch is controlled based on... Agent: Marsh, Fischmann & Breyfogle LLP

20100046254 - Energy effective switching power supply apparatus and an energy effective method thereof: An energy effective switching power supply apparatus and an energy effective method thereof. The energy effective switching power supply apparatus includes a power transforming part having first and second coils to induce a voltage to the second coil using interactions between the first and the second coils with respect to... Agent: Stanzione & Kim, LLP

20100046255 - Hvdc system: An HVDC network including a first station including a first converter, a second station including a second converter, each converter including non-extinguishable semiconducting elements. A first transmission conductor and a second transmission conductor. The first station includes a first switching arrangement.... Agent: Venable LLP

20100046256 - Rush current reduction circuit and electric appliance: An output node at a plus side of a diode bridge (DB2) is connected to a drain of a transistor (Q1), and a source of the transistor (Q1) is connected to an output node at a minus side the diode bridge (DB2). One end of a resister (R1) is connected... Agent: John S. Pratt, Esq Kilpatrick Stockton, LLP

20100046257 - Apparatus and method for controlling power converter: A power converter controlling apparatus that can prevent burnout caused by overcurrent and/or overvoltage generated by low power index operation or output short circuit in a high frequency power converter employing a digital controlling method, and a method thereof. The power converter controlling apparatus includes a digital controller which outputs... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20100046258 - Power supply control system: A digital control system for a switch mode power supply (SMPS), the control system having a demand input for a signal indicating whether an output voltage of said SMPS is above or below a desired value, and a drive output for a switch controlling energy transfer between an input and... Agent: Knobbe Martens Olson & Bear LLP

20100046261 - Apparatus and method for zero-voltage region detection: An apparatus and a method for detecting zero-voltage region detection are provided. The apparatus for zero-voltage region detection is configured to detect whether an input voltage approaches a zero voltage through an auxiliary winding, and to detect whether a primary winding almost completely releases the stored energy through the auxiliary... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100046262 - Control apparatus and control method for a power factor correction power converter: A control apparatus and a control method for a power factor correction power converter are provided. The control apparatus is configured to reduce the variation rate of a reference signal with a rising portion and a falling portion. When the primary winding almost completely releases the stored energy, and the... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100046260 - Feeding of output-side parallel connected bridge rectifiers with phase-shifted voltages from the secondary windings of at least one transformer: A device is disclosed for generating DC voltage from AC voltage. The device includes parallel connected diode bridges which are fed via at least one transformer, the primary windings of which are connected in series. The DC voltage is used for supplying DC paths, and secondary voltages on the secondary... Agent: Harness, Dickey & Pierce, P.L.C

20100046259 - Single-phase self-driven full-bridge synchrounous rectification: A full-bridge rectifier is configured to provide synchronous rectification with either a current-source or a voltage-source. The rectifier has an upper branch and a lower branch and two current loops, with each of the branches including voltage- or current-controlled active switches, diodes or combinations thereof that are selected such that... Agent: Heslin Rothenberg Farley & Mesiti PC

20100046264 - Generalized ac-dc synchronous rectification techniques for single- and multi-phase systems: Various circuit configurations and topologies are provided for single and multi-phase, single-level or multi-level, full and half-bridge rectifiers in which diodes are replaced by combinations of voltage-controlled self-driven active switches, current-controlled self-driven active switches and inductors in order to reduce the effects of conduction loss in the diodes.... Agent: Heslin Rothenberg Farley & Mesiti PC

20100046263 - Rectifier circuit with a voltage sensor: A rectifier circuit with a synchronously controlled semiconductor element comprising at least one field effect transistor with a control electrode and two switching electrodes. The control electrode operates the reverse state and the forward state between the switching electrodes. For this, the rectifier circuit comprises at least one driver which... Agent: Dicke, Billig & Czaja

02/18/2010 > patent applications in patent subcategories.

20100039833 - Power supply control system: This invention relates to improved control systems and methods for switch mode power supplies. A control system for a switch mode power supply (SMPS), the SMPS having a input side for receiving a power supply input and an output side for providing a dc output voltage, said input and output... Agent: Knobbe Martens Olson & Bear LLP

20100039834 - Power converter, and switching controller and driving method thereof: In a power converter, a primary coil of a transformer receives an input voltage, and a first terminal of a switch is coupled to the primary coil. An output unit includes a secondary coil of the transformer, and outputs an output voltage to which the input voltage is converted by... Agent: Okamoto & Benedicto, LLP

20100039835 - Switching power source apparatus: A switching power source apparatus has a controller generating a drive signal that controls an ON/OFF period of a switching element 3. The controller includes a load tester for testing the switching power source apparatus when detecting an edge of the drive signal after the switching element is switched from... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100039836 - Novel utilization of a multifunctional pin to control a switched-mode power converter: An embodiment of the invention relates to a power converter including a resistor divider with an internal node to sense an input line voltage. The internal node is operable as a multifunctional pin. A controller compares a feedback voltage dependent on a power converter output characteristic to a current-sense signal... Agent: Slater & Matsil LLP

20100039837 - Asymmetric switch forward converter: A switching circuit for use in a power converter in one aspect includes a first and second active switch and a first and second passive switch. The first active switch can be coupled to a first terminal of a primary winding of a transformer. The second active switch can be... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100039838 - Electrostatic discharge conducting pathway having a noise filter spark gap: A printed circuit board includes a primary region, a secondary region and an isolation region disposed between the primary region and the secondary region to galvanically isolate the primary region from the secondary region. The primary region is to be coupled to an AC source. The primary region also includes... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100039839 - Cycle modulation circuit for limiting peak voltage: A cycle modulation circuit for limiting voltage peak value of a power supply employed an active clamp. The power supply receives an input power which is modulated through a power driving unit to become a driving power transformed through a transformer to be output. The cycle modulation circuit includes a... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100039840 - Ac-to-dc voltage conversion and charging circuitry: Voltage conversion and charging circuitry and method for converting an alternating current (AC) voltage to a direct current (DC) voltage for charging an energy storage element (e.g., battery or supercapacitor). An output capacitance, which is initially charged quickly for use in the slower charging of a battery, also maintains the... Agent: Vedder Price/nsc

20100039841 - Control device for rectifier stations in a high-voltage dc transmission system: A control device for rectifier stations in a high-voltage DC transmission system has a rectifier drive unit and an inverter drive unit for driving power rectifier stations that are working either as a rectifier or as an inverter. The trigger angles for the rectifier or for the inverter can be... Agent: Lerner Greenberg Stemer LLP

20100039842 - Power conversion system and power conversion method thereof: A power conversion system and a power conversion method thereof. The power conversion system includes a driving unit, a control unit, a first direct current (DC) power supply circuit and a second DC power supply circuit. The control unit controls the driving unit to drive a load. The first DC... Agent: Rabin & Berdo, PC

20100039844 - Semiconductor device and power converter using the same: A semiconductor device which can avoid increase of a conduction loss of an IGBT, secure a low noise characteristic and also reduce a switch loss. The switching device is of a trench gate type, in which a drift n− layer 110 is exposed to its main surface to a floating... Agent: Brundidge & Stanger, P.C.

20100039843 - Semiconductor module for use in power supply: A series connection circuit of IGBTs and an AC switch are contained in one package. The series connection circuit is connected between the positive and negative terminals of a DC power source, and the AC switch is connected between a neutral point of the DC power source and a series... Agent: Rabin & Berdo, PC

02/11/2010 > patent applications in patent subcategories.

20100033991 - Switching controller having switching frequency hopping for power converter: A switching controller having switching frequency hopping for a power converter includes a first oscillator generating a pulse signal and a maximum duty-cycle signal for determining a switching frequency of a switching signal, a pattern generator having a second oscillator and generating a digital pattern code in response to a... Agent: Jianq Chyun Intellectual Property Office

20100033992 - Switching power supply controller and semiconductor device used for the same: In the present invention, according to a time from when a switching element 2 is turned on to when the switching element 2 reaches a set overcurrent detection level, an on time correction circuit 15 changes a time from when the switching element 2 reaches the overcurrent detection level to... Agent: Steptoe & Johnson LLP

20100033993 - Transformer having resonant inductance: Provided is a transformer having resonant inductance, the transformer including a core that includes a first leg formed in one side thereof, a second leg which is formed in the other side thereof so as to be electromagnetically coupled to the first leg, and a third leg which is formed... Agent: Lowe Hauptman Ham & Berner, LLP

20100033994 - Control arrangement and circuit arrangement for converting a dc voltage into a rectified voltage: Circuitry includes an acquiring circuit to acquire period and phase information of an oscillation. The acquiring circuit includes a first input electrically coupled to a first connection and a second input electrically coupled to a second connection. The first connection and the second connection are for electrically coupling to an... Agent: Fish & Richardson PC

20100033995 - Flyback circuit providing synchronized control: A flyback circuit providing synchronized control includes a pulse width modulation (PWM) unit, a synchronized control unit and an ON period limiting unit. The PWM unit generates a driving signal to control a switch ON period of a primary winding and provides a synchronized signal prior to the generation of... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100033996 - Power converting apparatus: A detected DC voltage value estimation mechanism samples detected DC voltage values at specific intervals of a period T, stores detected DC voltage values Vn to Vn−m detected at a present time tn up to a sampling time tn−m which is m sampling cycles (m≧1) before the present time tn,... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100033997 - Timed electrical outlet and a method of operation thereof: A timed electrical outlet (or pluggable apparatus) and a method of operation thereof. The electrical outlet (or pluggable apparatus) includes a current sensor, a counter, and an electrical switch. When an electrical load is plugged into the electrical outlet (or pluggable apparatus), the current sensor senses the flow of current... Agent: Hahn Loeser & Parks, LLP

20100033998 - Control of a resonant converter: The invention deals with the control of a resonant LLC converter by setting up criteria for state parameters of the resonant converter, so that the converter may be operated in a near capacitive mode. The current flowing in the resonant tank and optionally the voltage at the a predetermined point... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20100034001 - Converter with short-circuit current limiting: A device for inverting an electric current has at least one phase module which has an alternating current connection and at least one direct current connection. Semiconductor valves having semiconductor modules are connected in series and are provided for switching the electric current between the alternating current connection and each... Agent: Lerner Greenberg Stemer LLP

20100034000 - Electronic circuit having a diode-connected mos transistor with an improved efficiency: An integrated circuit including a semiconductor layer; and a MOS transistor including first and second power terminals and a bulk insulated from the semiconductor layer, the first power terminal being intended to receive an oscillating signal, the transistor gate and the bulk being connected to the first power terminal.... Agent: Stmicroelectronics Inc. C/o Wolf, Greenfield & Sacks, P.C.

20100033999 - Low-power radio frequency direct current rectifier: Provided is a low-power radio frequency (RF) direct current (DC) rectifier. The low-power RF DC rectifier includes a rectification circuit with first and second to n-th rectification units sequentially rectifying an RF signal input through a first input terminal and a second input terminal. The first rectification unit is disposed... Agent: Lowe Hauptman Ham & Berner, LLP

20100034002 - Interleaved soft switching bridge power converter: An interleaved soft switching bridge power converter comprises switching poles operated in an interleaved manner so as to substantially reduce turn-on switching losses and diode reverse-recovery losses in the switching pole elements. Switching poles are arranged into bridge circuits that are operated so as to provide a desired voltage, current... Agent: Neugeboren O'dowd PC

20100034003 - Electric power generation and conversion with controlled magnetics: A power conversion system comprises: a source of multiphase high frequency alternating current (AC) electrical input power; a high frequency controlled magnetics transformer for each phase of the multiphase high frequency AC input power, with each transformer having a primary winding coupled to its respective phase of the multiphase high... Agent: Stephen George Mican

02/04/2010 > patent applications in patent subcategories.

20100027297 - Step-up converter systems and methods: Methods and systems with a step-up converter are provided based on a boost converter. In one aspect, a step-up converter includes: a boost converter having a first inductor; a second inductor paired on a core with the first inductor; and a rectifier circuit coupled with the second inductor to generate... Agent: Greenberg Traurig, LLP (sv)IPDocketing

20100027298 - System and method for synchronous rectifier drive that enables converters to operate in transition and discontinuous mode: A synchronous rectifier is switched in accordance with a primary switch transition and a reference signal representing current in a current storage device to which the synchronous rectifier is coupled. A current emulator provides a signal representing current in the current storage device as a volt-second product so that current... Agent: Texas Instruments Incorporated

20100027299 - Systems and methods for adaptive switching frequency control in switching-mode power conversion systems: Switching-mode power conversion system and method thereof. The system includes a primary winding configured to receive an input voltage and a secondary winding coupled to the primary winding. Additionally, the system includes a compensation component configured to receive the input voltage and generate at least a clock signal based on... Agent: Jones Day

20100027300 - Systems and methods for primary-side regulation in off-line switching-mode flyback power conversion system: Switching-mode power conversion system and method thereof. The system includes a primary winding configured to receive an input voltage, and a secondary winding coupled to the primary winding and configured to, with one or more first components, generate, at an output terminal, an output voltage and an output current. Additionally,... Agent: Jones Day

20100027301 - Band-pass current mode control scheme for switching power converters with higher-order output filters: i

20100027302 - Converter with reduced harmonic waves: Converter and method for controlling a converter with power semiconductor switches, having a filter (1) which is connected to the power semiconductor switches and having a drive circuit (4) which is connected to the power semiconductor switches for the purpose of modulation, wherein, as a result of the modulation, a... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20100027303 - Devices and methods for converting or buffering a voltage: Embodiments of the invention relate to devices and methods for converting or buffering a voltage including an inductor configured to perform at least a primary function and to be reused to contribute to converting or buffering the voltage as a secondary function.... Agent: Slater & Matsil LLP

20100027304 - Electrical power system with high-density pulse width modulated (pwm) rectifier: An electrical power system includes an alternating current (AC) power source configured to output an AC signal, a single phase pulse-width modulated (PWM) rectifier coupled to the AC power source and to an electrical load; a DC link capacitor coupled in parallel to the load and the PWM rectifier; and... Agent: Krieg Devault LLP

20100027305 - Electric power control device and vehicle with the same: Power lines are connected to neutral points of motor generators, respectively, and an electric power is transmitted and received between a vehicle and a load outside the vehicle via the power lines. In this transmission, an ECU simultaneously PWM-controls all phases of one of inverters, and controls the other inverter... Agent: Oliff & Berridge, PLC

20100027306 - Primary resonant inverter circuit for feeding a secondary circuit: A primary circuit (1) for feeding a secondary circuit (2) comprises a switch circuit (10) with switches (11-14) controlled by a control circuit (40) for bringing the primary circuit (1) into first or second modes and comprises a resonance circuit (20) for, in the first mode, increasing an energy supply... Agent: Philips Intellectual Property And Standards

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