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    POWER SUPPLY AND DRIVING METHOD THEREOF
    1.
    发明公开
    POWER SUPPLY AND DRIVING METHOD THEREOF 审中-公开

    公开(公告)号：US20240364220A1

    公开(公告)日：2024-10-31

    申请号：US18479741

    申请日：2023-10-02

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Minwoo KIM ,  Hyungju PARK ,  Woosuk CHOI ,  Wookwan LEE

    IPC: H02M3/158 ,  H02M1/088 ,  H02M1/14 ,  H02M1/32

    CPC classification number: H02M3/1582 ,  H02M1/088 ,  H02M1/14 ,  H02M1/32

    Abstract: A power supply includes a first and second switching node, a first power switch and a second power switch, and a first bootstrap capacitor, the first bootstrap capacitor including one end connected to the first switching node, a third and a fourth power switch, and a second bootstrap capacitor, the second bootstrap capacitor including one end connected to the second switching node, and a charge sharing circuit storing a charge using a power supply voltage, providing a first charge sharing path for the first bootstrap capacitor from the stored charge based on a first voltage charged in the first bootstrap capacitor, and to provide a second charge sharing path for the second bootstrap capacitor from the stored charge based on a second voltage charged in the second bootstrap capacitor. The first charge sharing path and the second charge sharing path include a common charge sharing path and overlap each other.

    DEVELOPMENT OF COMPACT AND LOW COST FULLY INTEGRATED DC-DC CONVERTER WITH RESONANT GATE DRIVE AND INTELLIGENT TRANSIENT RESPONSE
    2.
    发明公开
    DEVELOPMENT OF COMPACT AND LOW COST FULLY INTEGRATED DC-DC CONVERTER WITH RESONANT GATE DRIVE AND INTELLIGENT TRANSIENT RESPONSE 审中-公开

    公开(公告)号：US20240356429A1

    公开(公告)日：2024-10-24

    申请号：US18302330

    申请日：2023-04-18

    Applicant: Northwestern University

    Inventor： Jie Gu ,  Xi Chen

    IPC: H02M1/088 ,  H02M3/158

    CPC classification number: H02M1/088 ,  H02M3/158

    Abstract: A machine learning based control scheme for a buck converter achieves fast and more energy efficient regulation of power supply change using a machine learning module that predicts upcoming supply droop or overshoot. The prediction results may be sent to a buck converter to provide power regulation in time so that the buck converter can mitigate the droop or overshoot. An event-based detection and reaction control circuit, serving as “safety net” may address mispredictions. The machine learning module may consider a microprocessor's internal operation states and earlier supply voltages. The event-based control circuit nay include both a fast droop response circuit and a slow droop response circuit that address different supply droop scenarios.

    COMMON-MODE VOLTAGE SUPPRESSION METHOD AND SYSTEM FOR QUASI-Z-SOURCE SIMPLIFIED THREE-LEVEL INVERTER
    4.
    发明公开
    COMMON-MODE VOLTAGE SUPPRESSION METHOD AND SYSTEM FOR QUASI-Z-SOURCE SIMPLIFIED THREE-LEVEL INVERTER 审中-公开

    公开(公告)号：US20240348152A1

    公开(公告)日：2024-10-17

    申请号：US18280336

    申请日：2022-12-28

    Applicant: SHANDONG JIANZHU UNIVERSITY

    Inventor： Changwei QIN ,  Xiaoyan LI ,  Zhiyuan CHU ,  Hongliang ZHANG ,  Yanfeng LI

    IPC: H02M1/12 ,  H02M1/088 ,  H02M7/487 ,  H02M7/5395

    CPC classification number: H02M1/123 ,  H02M1/088 ,  H02M7/487 ,  H02M7/5395

    Abstract: A common-mode voltage suppression method includes: selecting two large and two small vectors with low common-mode voltage magnitudes as basic voltage vectors; writing a volt-second balance equation according to a selected basic voltage vectors, and calculating, an introduced distribution factor of duty cycles of small vectors, initial values of distribution factors of a duty cycle of each basic voltage vector and of small vectors; designing a neutral-point voltage balance controller to obtain and utilize a corrected value of the distribution factor of the duty cycles of the small vectors and the initial values and combine with a set neutral-point voltage balance control threshold to update the duty cycle of each basic voltage vector; and inserting shoot-through states into the small vectors, designing a switching sequence, converting the sequence into a driving signal of a power switch, and controlling an operation of the quasi-Z-source simplified three-level inverter.

    POWER CONVERSION DEVICE, VEHICLE, CONTROL METHOD, AND COMPUTER PROGRAM PRODUCT
    7.
    发明公开
    POWER CONVERSION DEVICE, VEHICLE, CONTROL METHOD, AND COMPUTER PROGRAM PRODUCT 审中-公开

    公开(公告)号：US20240322698A1

    公开(公告)日：2024-09-26

    申请号：US18429123

    申请日：2024-01-31

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Fumito KUSAMA

    IPC: H02M3/335 ,  B60L50/60 ,  H02M1/00 ,  H02M1/088 ,  H02M3/00

    CPC classification number: H02M3/33573 ,  B60L50/60 ,  H02M1/0022 ,  H02M1/088 ,  H02M3/01 ,  H02M3/33592 ,  B60L2210/10

    Abstract: A power conversion device according to the present disclosure is applied with a DC input voltage and outputs a DC output voltage to a load. The power conversion device includes first to fourth switch elements, a resonance circuit including an inductor and a capacitor, a transformer in which the inductor, the capacitor, and a primary-side coil are connected in series, a rectifier circuit, a smoothing circuit, and a controller. The controller controls an operation frequency, simultaneously switches the first and fourth switch elements in a first mode, and switches the fourth switch element with a phase of the fourth switch element delayed by a predetermined first phase with respect to the first switch element in a second mode. The controller switches the first and second modes according to at least one of the output voltage, an output current, a dead time current, the input voltage, and a circuit temperature.

    POWER SUPPLY CIRCUIT AND CONTROL METHOD THEREOF
    8.
    发明公开
    POWER SUPPLY CIRCUIT AND CONTROL METHOD THEREOF 审中-公开

    公开(公告)号：US20240313626A1

    公开(公告)日：2024-09-19

    申请号：US18593964

    申请日：2024-03-03

    Applicant: Realtek Semiconductor Corporation

    Inventor： Li Cheng CHU ,  Leaf CHEN

    IPC: H02M1/00 ,  H02M1/088 ,  H02M1/32 ,  H02M3/158

    CPC classification number: H02M1/0029 ,  H02M1/088 ,  H02M1/32 ,  H02M3/158

    Abstract: A power supply circuit includes a power switch circuit, a slew rate sensing circuit, a reference voltage generator circuit, and a first protection circuit. The power switch circuit is configured to generate an output current to an output terminal of power switch circuit according to an input voltage at an input terminal. The slew rate sensing circuit is configured to generate a sensing voltage according to an output voltage at the output terminal of the power switch circuit. The reference voltage generator circuit is configured to generate a reference voltage according to the input voltage. The first protection circuit is configured to generate a control voltage according to the reference voltage and the sensing voltage to control a turned-on degree of the power switch circuit.

    Power converter with adaptative stages and gate driver
    9.
    发明授权
    Power converter with adaptative stages and gate driver 有权

    公开(公告)号：US12095351B2

    公开(公告)日：2024-09-17

    申请号：US17555754

    申请日：2021-12-20

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Buddhika Abesingha ,  Arezu Bagheri ,  Gregory Szczeszynski

    IPC: H02M3/158 ,  H02M1/00 ,  H02M1/088

    CPC classification number: H02M1/088 ,  H02M1/0006 ,  H02M1/0009 ,  H02M1/0032 ,  H02M3/158

    Abstract: A switching power converter architecture that is efficient across its entire power range, regardless of load level, by partitioning the power devices into segments for optimal gate drive and providing a local variable-voltage driver for each power device segment. Power device segments may be selectively enabled or disabled based on the level of power to be delivered to a load. In addition, an adaptive gate drive scheme enables dynamic control of the RON and QG values for each power converter device so that the power devices may operate at the lowest RON value at or near maximum power levels for reduced conduction losses, at the lowest RON×QG product value at mid-level loads for peak efficiency, and at the lowest QG value at light loads for reduced switching losses.

    CONTROLLER OF AN AUXILIARY SWITCH USED IN A FLYBACK CIRCUIT AND CONTROL METHOD THEREOF
    10.
    发明公开
    CONTROLLER OF AN AUXILIARY SWITCH USED IN A FLYBACK CIRCUIT AND CONTROL METHOD THEREOF 审中-公开

    公开(公告)号：US20240305204A1

    公开(公告)日：2024-09-12

    申请号：US18595738

    申请日：2024-03-05

    Applicant: Hangzhou MPS Semiconductor Technology, Ltd.

    Inventor： Xuefeng Chen

    IPC: H02M3/335 ,  H02M1/00 ,  H02M1/088

    CPC classification number: H02M3/33515 ,  H02M1/0009 ,  H02M1/088 ,  H02M3/33523

    Abstract: A controller for controlling auxiliary switch connected in series with a clamp capacitor to form an energy recycle branch in a flyback circuit. The controller has a power supply terminal to receive an external supply voltage, a sensing terminal connected to a first terminal of a current sense resistor which is connected in series with a primary switch, a ground terminal connected to a second terminal of the current sense resistor, a drive terminal connected to a control terminal of the auxiliary switch, and a turn on control circuit. Based on a logic state of a voltage at the power supply terminal and a voltage across the current sense resistor, the turn on control circuit provides a turn on control signal to control of the auxiliary switch.

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