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81. 发明申请

US20050265056A1 Control method and circuit for synchronous rectifiers used in ZVS DC/DC converter 有权
标题翻译：用于ZVS DC / DC转换器的同步整流器的控制方法和电路
公开(公告)号：US20050265056A1
公开(公告)日：2005-12-01
申请号：US10858243
申请日：2004-06-01
申请人： Chao Yan , Hao-Yi Ye , Hong-Yang Wu , Jian-Hong Zeng , Jian-Ping Ying
发明人： Chao Yan , Hao-Yi Ye , Hong-Yang Wu , Jian-Hong Zeng , Jian-Ping Ying
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A control method for a first synchronous rectifier and a second synchronous rectifier in a switching power converter is presented. The switching power converter includes a transformer, and a first switching device and a second switching device connected in series and in parallel with an input voltage source. The first synchronous rectifier is connected with a low end of a secondary winding of the transformer. The second synchronous rectifier is connected with a high end of the secondary winding of said transformer. The first switching device is connected with a high end of the input voltage source, and the second switching device is connected with a low end of the input voltage source. The control includes the steps of driving the first switching device to an on state and the second switching device to an off state; and driving the second synchronous rectifier to an off state after the second switching device has been driven to an on state, such that a power is delivered from the primary winding to the secondary winding.
摘要翻译：提出了一种开关电源转换器中的第一同步整流器和第二同步整流器的控制方法。开关电源转换器包括变压器以及与输入电压源串联并联连接的第一开关器件和第二开关器件。第一同步整流器与变压器次级绕组的低端连接。第二同步整流器与所述变压器的次级绕组的高端连接。第一开关装置与输入电压源的高端连接，第二开关装置与输入电压源的低端连接。该控制包括以下步骤：将第一开关装置驱动为导通状态，将第二开关装置切换到断开状态; 并且在所述第二开关装置被驱动到接通状态之后将所述第二同步整流器驱动到截止状态，使得从所述初级绕组向次级绕组输送功率。

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