RESONANT CONVERTER SYSTEM WITH SOFT START AND OUTPUT VOLTAGE CONTROL, AND CONTROL METHOD THEREOF

    公开(公告)号:EP4131758A1

    公开(公告)日:2023-02-08

    申请号:EP21382739.7

    申请日:2021-08-05

    Abstract: The invention refers to a soft-start and output voltage control technique for resonant converters. A first aspect of the invention refers to a resonant converter comprising: an input stage as a switch network including semiconductor switching devices, a resonant circuit, and a controller for controlling the switch network, wherein the controller is adapted to operate the resonant converter during a start up process, wherein the switching frequency and the duty-cycle are kept constant during a first time interval (t1). The invention also refers to a method for controlling a resonant converter, wherein the converter is started up by maintaining switching frequency and duty-cycle constant during a first time interval (t1). The converter is operated in a burst mode during the starting up process. The invention provides a fast and precise soft-start and output voltage control method for resonant converters, especially for light load conditions.

    POWER SUPPLY ELECTRONIC CIRCUIT
    9.
    发明公开
    POWER SUPPLY ELECTRONIC CIRCUIT 审中-公开
    功率电子电路

    公开(公告)号:EP3105832A1

    公开(公告)日:2016-12-21

    申请号:EP14882711.6

    申请日:2014-02-14

    Inventor: GU, Jingxu

    Abstract: A power supply electronic circuit is provided. The power supply electronic circuit comprises: an intermediate bus converter (IBC), arranged to convert a voltage inputted to the IBC to an intermediate bus voltage on an intermediate bus; at least one direct current to direct current (DC-DC) or point of load (POL) converter, connected to the intermediate bus and arranged to convert the intermediate bus voltage to a voltage for feeding a load; and a capacitor tank connected to the intermediate bus and arranged as hold up capacitor tank to preserve power supply to the load. The IBC comprises a current ripple control circuit for suppressing current ripple in an input of the power supply electronic circuit.

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