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LM5035的OVP功能和浪涌怎么兼得

Other Parts Discussed in Thread: LM5035

通信电源输入范围在36-72v,超过72v就要启动过压保护。但是在设备做安规浪涌抗扰度测试时会有瞬时高压进入,一般防护器件会选择钳位电压约100v,这就导致LM5035的OVP功能触发,自动关闭输出,实际并不是被浪涌实验失败,关闭OVP功能则正常。试过在OVP那里加RC滤波,需要加非常大的电阻才可,这样导致正常使用时OVP的迟滞非常大(有十几V),不满足设计要求。请问有什么方法?