公开(公告)号：US20050231984A1

公开(公告)日：2005-10-20

申请号：US11104480

申请日：2005-04-13

申请人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

发明人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

IPC分类号： H02M3/335

CPC分类号： H02M3/33576

摘要： A switching power converter for converting an AC power into a DC power. The converter includes a transformer, a charge storage unit, a synchronization signal generator, and a switch element. The transformer includes a primary side coil and a secondary side coil, and the primary side coil generates an induced voltage at the secondary side coil according to AC power. The charge storage unit charges according to the induced voltage and outputs a DC power. The synchronization signal generator generates a synchronization signal according to the induced voltage. The synchronization signal is the first value when the induced voltage is positive and is the second value when the induced voltage is negative. The switch element, serially connected to the secondary side coil and controlled by the synchronization signal, is turned on when the synchronization signal is the first value and is turned off when otherwise.

摘要翻译： 一种用于将AC电力转换为DC电力的开关电力转换器。 转换器包括变压器，电荷存储单元，同步信号发生器和开关元件。 变压器包括初级侧线圈和次级侧线圈，并且初级侧线圈根据AC电力在次级侧线圈处产生感应电压。 电荷存储单元根据感应电压进行充电并输出直流电力。 同步信号发生器根据感应电压产生同步信号。 当感应电压为正时，同步信号为第一个值，当感应电压为负时为同步信号。 当同步信号为第一值时，串联连接到次级侧线圈并由同步信号控制的开关元件导通，否则关闭。