会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • SWITCHING POWER CONVERTER FOR REDUCING EMI FROM RING OSCILLATION AND ITS CONTROL METHOD
    • 切换功率转换器,降低振荡振荡的EMI及其控制方法
    • WO2010063139A1
    • 2010-06-10
    • PCT/CN2008/001964
    • 2008-12-03
    • IWATT INC.ZHENG, JunQUEK, Eng HweeGUO, Huaming
    • ZHENG, JunQUEK, Eng HweeGUO, Huaming
    • H02M3/28H02M7/12
    • H02M3/33507H02M1/44
    • A switching power converter (200, 300, 400, 500) comprises a transformer (211) with a parasitic capacitance (212), a first switch (207) coupled to the transformer (211) and configured to couple or decouple a load (219) to or from a power source via the transformer (211), a switch controller (205) coupled to the first switch (207) and configured to generate a switch drive signal (206) for turning on or off the first switch (207) according to switching cycles, and a bypass circuit configured to provide a bypass path for the parasitic elements such as the parasitic capacitance (212). The bypass circuit may be coupled in parallel with the auxiliary winding (220), the primary winding (213), or the secondary winding (214) of the transformer (211). High frequency ringing and EMI/RFI is reduced when the bypass circuit is enabled.
    • 开关功率转换器(200,300,400,500)包括具有寄生电容(212)的变压器(211),耦合到变压器(211)的第一开关(207)并且被配置为耦合或解耦负载(219 )连接到第一开关(207)并且被配置为产生用于接通或断开第一开关(207)的开关驱动信号(206)的开关控制器(205) 以及旁路电路,其被配置为为诸如寄生电容(212)的寄生元件提供旁路路径。 旁路电路可以与变压器(211)的辅助绕组(220),初级绕组(213)或次级绕组(214)并联耦合。 当旁路电路使能时,高频振铃和EMI / RFI降低。