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LMZ10504芯片损坏的问题

Other Parts Discussed in Thread: LMZ10504, LM10504

使用电路图见附件,板子是可插拔设计,插在总线板是单板有电,万用表测量LMZ10504的PIN4和PIN7短路,

示波器测试上电时也没有发现输入电源有超过5V的高压,这个电源芯片在什么情况下可能引起短路呢,生产20块中已经出现两块这个问题了。