过电压保护电路、过电压保护方法以及闸极驱动积体电路;OVERVOLTAGE PROTECTION CIRCUIT, OVERVOLTAGE PROTECTION METHOD AND GATE DRIVING INTEGRATED CIRCUIT

摘要

一种过电压保护电路、过电压保护方法以及闸极驱动积体电路。过电压保护方法用于过电压保护电路。过电压保护电路耦接第一开关。第一开关具有控制端。过电压保护方法包括以下步骤：比较第一电压预设值与工作电压来产生第一致能信号；以及当第一致能信号产生时，比较第一开关的控制端的电压与参考电压，以决定过电压保护电路是否执行过电压保护操作，从而可避免因高电压应力而损坏负载。; and when the first enable signal is generated, comparing a voltage of the control terminal of the first switch and a reference voltage for determining whether the overvoltage protection circuit will perform an overvoltage protection operation, so as to avoid damage to a load due to high voltage stress.