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    • 9. 发明申请
    • FLYBACK CONVERTER WITH SYNCHRONOUS RECTIFIER
    • 带同步整流器的回波转换器
    • US20080043497A1
    • 2008-02-21
    • US11740098
    • 2007-04-25
    • Jong-Wei PwuYang-Sheng Sun
    • Jong-Wei PwuYang-Sheng Sun
    • H02M3/335
    • H02M3/33592Y02B70/1475
    • Disclosed is a flyback converter with a synchronous rectifier, in which the synchronous rectifier includes a synchronous switch, a current transformer connected in series between a drain terminal of the synchronous switch and an output terminal, and a secondary synchronous rectification driver connected to the gate terminal of the synchronous switch. Furthermore, a shunt resistor is connected in parallel with the current transformer for providing a current bypass path for a secondary current flowing through the synchronous switch and the current transformer, and thereby reducing the current flowing through the current transformer. Thus, the overall efficiency of the flyback converter can be enhanced and the life of the current transformer can be prolonged.
    • 公开了一种具有同步整流器的反激式转换器,其中同步整流器包括同步开关,串联连接在同步开关的漏极端子和输出端子之间的电流互感器以及连接到栅极端子的次级同步整流驱动器 的同步开关。 此外,分流电阻器与电流互感器并联连接,为流过同步开关和电流互感器的二次电流提供电流旁路,从而减小流过电流互感器的电流。 因此,可以提高回扫转换器的总体效率,并且可以延长电流互感器的寿命。