利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN106300921A 同步整流管驱动方法、同步整流管电路和开关电源 有权

同步整流管驱动方法、同步整流管电路和开关电源
摘要：
本发明公开了一种同步整流管驱动方法、同步整流管电路和开关电源，上述方法包括：检测变压器单元的次级绕组中的输出电流，并根据所述输出电流，生成第一驱动信号，根据同步整流管电路中变压器单元的次级绕组的电压信号，得到根据变压器单元初级绕组中的电平反转发生同步反转的保护信号；利用得到的保护信号对已有的第一驱动信号进行修正得到第二驱动信号；根据第二驱动信号驱动同步整流电路中的整流管。通过保护信号对第一驱动信号进行修正，能够消除第一驱动信号的延时现象，从而减小同步整流管的损坏的现象，提高了同步整流管电路和开关电源的性能。
摘要（英）：

The invention discloses a synchronization rectifier tube driving method, a synchronization rectifier tube and a switch power supply. The synchronization rectifier tube driving method comprises steps of detecting output current in a secondary winding of a transformer unit, generating a first drive signal according to the output current, obtaining a protection signal which generates synchronized reversed rotation according to reverse rotation of an electric level in a primary winding of a transformer unit according to a voltage signal of the secondary winding of the transformer unit in the synchronization rectifier tube, using an obtained protection signal to perform correction on an existing first driving signal to obtain a second driving signal, and driving the rectifier tube in the synchronization rectifier circuit according to the second driving signal. Through correction on a first drive signal by the protection signal, the synchronization rectifier tube driving method, the synchronization rectifier tube and the switch power supply can eliminate delay of the first driving signal, can reduce a damage phenomenon of the synchronization rectifier tube and improve performance of the synchronization rectifier tube and the switch power supply.

公开/授权文献
0/0