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89767 条记录 (耗时 0.057 秒)

    Electric-power converter
    71.
    发明授权
    Electric-power converter 有权

    公开(公告)号：US12113457B2

    公开(公告)日：2024-10-08

    申请号：US18005765

    申请日：2020-10-28

    申请人： TMEIC Corporation

    发明人： Kazuki Aoyagi ,  Issei Fukasawa

    IPC分类号： H02M7/493 ,  H02H7/12 ,  H02M1/00 ,  H02S40/32

    CPC分类号： H02M7/493 ,  H02H7/1213 ,  H02M1/0009 ,  H02S40/32

    摘要： An electric-power converter includes a plurality of direct-current power supplies, a plurality of power conversion circuits provided corresponding to the respective direct-current power supplies, an alternating-current power system configured to cause a plurality of alternating-current ends provided in the respective power conversion circuits to be directly connected in parallel through a parallel connection point, and to supply the alternating-current power output from the plurality of alternating-current ends to an alternating-current side through the parallel connection point, a plurality of grounding wires each configured to connect at least two of a plurality of direct-current negative buses between the plurality of direct-current power supplies and the plurality of power conversion circuits, to earth, and a plurality of diodes inserted in series into the respective grounding wires, and each including a cathode side connected to the corresponding direct-current negative bus and an anode side grounded.

    Antenna based method for harvesting radio frequency energy
    73.
    发明授权
    Antenna based method for harvesting radio frequency energy 有权

    公开(公告)号：US12113453B2

    公开(公告)日：2024-10-08

    申请号：US18616391

    申请日：2024-03-26

    申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    发明人： Munir A. Al-Absi

    IPC分类号： H02M7/219 ,  H02J50/00 ,  H02J50/20

    CPC分类号： H02M7/219 ,  H02J50/001 ,  H02J50/20

    摘要： A circuit and methods describing a complementary metal-oxide semiconductor (CMOS) rectifier for use in radio frequency (RF) energy harvesting with body biasing by the RF input to control the threshold voltage of each transistor. The CMOS rectifier includes an energy harvesting antenna, and multiple rectifier stages. The antenna receives electromagnetic radiation from the environment and generates a DC current. The oscillating input current is an RF+ positive current during a first half cycle and is an RF− negative current during a second half cycle. A first rectifier stage includes a first capacitor connected to the RF+ positive current, a second capacitor connected to the RF− negative current and a cross coupled CMOS circuit connected to the antenna.

    Multi-converter power supply system
    74.
    发明授权
    Multi-converter power supply system 有权

    公开(公告)号：US12113443B2

    公开(公告)日：2024-10-08

    申请号：US17933625

    申请日：2022-09-20

    申请人： Murata Manufacturing Co., Ltd.

    发明人： Tatsuya Hosotani ,  Norikazu Sakamoto

    IPC分类号： H02M3/158 ,  H02M1/00

    CPC分类号： H02M3/1584 ,  H02M1/0009

    摘要： A multi-converter power supply system includes a plurality of cell converters, a common node to which an individual output terminal of each of the plurality of cell converters is connected, a current waveform signal generation circuit that generates a current waveform signal corresponding to a current waveform flowing through an individual inductor, a current average signal generation circuit that generates a current average signal by averaging temporal changes that the current waveform signal has in a switching period of a switching control circuit, and an instrumentation amplifier that receives input of a current common signal obtained from the common node and the current average signal and that generates an individual current feedback signal to be fed back to the switching control circuit.

    Integrated circuit and method of synchronous rectification control of bridgeless power factor correction circuit
    75.
    发明授权
    Integrated circuit and method of synchronous rectification control of bridgeless power factor correction circuit 有权

    公开(公告)号：US12113436B2

    公开(公告)日：2024-10-08

    申请号：US17677709

    申请日：2022-02-22

    申请人： SANKEN ELECTRIC CO., LTD.

    发明人： Osamu Ohtake ,  Ryuichi Furukoshi

    IPC分类号： H02M1/42 ,  H02M1/00

    CPC分类号： H02M1/4233 ,  H02M1/0058 ,  H02M1/0085

    摘要： A method may include detecting an output voltage of the output smoothing capacitor in the bridgeless interleaved power factor correction circuit of a critical mode, comparing the detected output voltage with a reference voltage, controlling the first and the second half-bridge circuits included in the bridgeless interleaved power factor correction circuit of the critical mode to be on and off based on an error signal between the output voltage and the predetermined reference voltage, measuring ON time of a synchronous rectification switch operation of the first half-bridge circuit by measuring a time period between OFF timing of an active switch of the first half-bridge circuit and output of a differentiation signal generated by a differentiation circuit included in the bridgeless interleaved power factor correction circuit of the critical mode; and assigning the measured time to next ON time of the synchronous rectification switch operation of the second half-bridge circuit.

    Trans-inductor voltage regulators with fault detection and the fault detection method thereof
    76.
    发明授权
    Trans-inductor voltage regulators with fault detection and the fault detection method thereof 有权

    公开(公告)号：US12113432B2

    公开(公告)日：2024-10-08

    申请号：US17698940

    申请日：2022-03-18

    申请人： Monolithic Power Systems, Inc.

    发明人： Hang Shao ,  Tao Zhao

    IPC分类号： H02M1/32 ,  H02M3/158

    CPC分类号： H02M1/32 ,  H02M3/1586

    摘要： A trans-inductor voltage regulator with fault detection has a plurality of transformers. Each transformer of the plurality of the transformers has a primary winding coupled to a switching circuit, and a secondary winding. Each secondary winding of each transformer of the plurality of transformers are coupled in series with a compensation inductor. The trans-inductor further has a controller operable to detect a) a short condition in a secondary side of each transformer of the plurality of transformers, b) a short condition between a primary side and the secondary side of each transformer of the plurality of transformers; c) an open condition in the primary side of each transformer of the plurality of transformers; and d) an open condition in the secondary side of each transformer of the plurality of transformers.