METHOD AND DEVICE FOR DISCHARGING OUTPUT CAPACITOR OF POWER SUPPLY

Embodiments of a method and a device are disclosed. In an embodiment, a method for discharging an output capacitor of a power supply is disclosed. The power supply includes a primary side for receiving a signal to be converted and a secondary side for outputting a converted signal. The method involves detecting whether synchronous rectification (SR) circuitry at the secondary side is inactive, determining that the primary side is disconnected from a mains voltage when the SR circuitry is detected to be inactive, and discharging an output capacitor at the secondary side based on the determination that the primary side is disconnected from the mains voltage. 公开了一种方法和一种装置的实施例。在一个实施例中，公开了一种用于使电源的输出电容器放电的方法。所述电源包括用于接收待转换信号的初级侧和用于输出所转换信号的次级侧。所述方法涉及检测所述次级侧的同步整流(SR)电路系统是否不活动；当检测到所述SR电路系统不活动时，确定所述初级侧与市电电压断开连接；以及基于确定所述初级侧与所述市电电压断开连接来使所述次级侧的输出电容器放电。