公开(公告)号：US20070121351A1

公开(公告)日：2007-05-31

申请号：US11561937

申请日：2006-11-21

申请人： Congfeng Zhang ,  Hao Zhang ,  Guichao Hua

发明人： Congfeng Zhang ,  Hao Zhang ,  Guichao Hua

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： A DC-DC flyback converter, includes a three-winding transformer; a primary power circuit having a first MOSFET connected to a first winding of the transformer; a secondary power circuit connected to a second winding of the transformer terminals; and a self-driven circuit connected to a third winding of the transformer. The secondary power circuit includes a synchronous rectifier in the form of a second MOSFET and the self-driven circuit further includes a delay drive circuit, an isolation differential circuit, a negative removal circuit having a third MOSFET and a synchronous rectifier trigger switch-off circuit for switching the synchronous rectifier to an off condition.

摘要翻译： DC-DC反激式转换器，包括三绕组变压器; 主电源电路，其具有连接到变压器的第一绕组的第一MOSFET; 连接到变压器端子的第二绕组的次级电源电路; 以及连接到变压器的第三绕组的自驱动电路。 次级电源电路包括第二MOSFET形式的同步整流器，并且自驱动电路还包括延迟驱动电路，隔离差分电路，具有第三MOSFET的同步整流器触发关断电路 用于将同步整流器切换到关闭状态。

公开(公告)号：US07791903B2

公开(公告)日：2010-09-07

申请号：US11561937

申请日：2006-11-21

申请人： Congfeng Zhang ,  Hao Zhang ,  Guichao Hua

发明人： Congfeng Zhang ,  Hao Zhang ,  Guichao Hua

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： A DC-DC flyback converter, includes a three-winding transformer; a primary power circuit having a first MOSFET connected to a first winding of the transformer; a secondary power circuit connected to a second winding of the transformer terminals; and a self-driven circuit connected to a third winding of the transformer. The secondary power circuit includes a synchronous rectifier in the form of a second MOSFET and the self-driven circuit further includes a delay drive circuit, an isolation differential circuit, a negative removal circuit having a third MOSFET and a synchronous rectifier trigger switch-off circuit for switching the synchronous rectifier to an off condition.

摘要翻译： DC-DC反激式转换器，包括三绕组变压器; 主电源电路，其具有连接到变压器的第一绕组的第一MOSFET; 连接到变压器端子的第二绕组的次级电源电路; 以及连接到变压器的第三绕组的自驱动电路。 次级电源电路包括第二MOSFET形式的同步整流器，并且自驱动电路还包括延迟驱动电路，隔离差分电路，具有第三MOSFET的同步整流器和同步整流器触发关断电路 用于将同步整流器切换到关闭状态。