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TPS54231 电源输入如何做保护 提高EFT性能

最近在做板卡测试,给电源线打EFT 瞬变脉冲群干扰,几百伏就挂了。

板子DC-DC模块输入端仅有4.7uf、100nf 处理,感觉是这里保护不够。

那么问题就是 DCDC 输入端如何做些保护处理,提高EFT性能