TI工程师你们好,问一下我这个电路在瞬间通电(用导线碰)后,TPS54331就坏了呢?没输出了,瞬间通电时有火花,是不是电感放导致的啊,但这时官方手册里的典型应用电路,怎么会这样呢?
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HI
导线碰相当于硬开关,跳火是正常的,并且会产生很大的电压spike, 很可能烧掉芯片Vin.
做电源测试,建议用电源供应器上的软开关。