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lm25119 5V在轻载输出的时候MOS管发烫

Other Parts Discussed in Thread: LM25119

dear all,

   目前在调试一个LM25119的一个电源板,5V在轻载输出的时候MOS管发烫的厉害,如果换成其它品牌的的MOS管会有改善。下面是在轻载的时候H-SIDE L-SIDE的波形,从波形上看,有发生short through的风险。

  附件有此电源的原理图和测试的波形,还请帮忙解决,谢谢!LM25119 issue.zip