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tps54425上电有个阶梯 是负载太大了吗



  

我画了个示意图,由于示波器图片暂时没保存!我板子一共用了5颗,电路都基本一致的,除了这路瞬间电流会比较大些,其他都无此问题,所以我比较怀疑,我待会把负载都断掉试试!