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BQ25601芯片工作不正常

Other Parts Discussed in Thread: BQ25601, BQSTUDIO

求助,BQ25601的Vsys后面接负载板子,现在没接锂电池,前端5V上电后,负载板子开机,BQ25601芯片的SYS和BAT脚都被拉低,导致负载板子开不了机,波形如图红色箭头所示,移去BQ25601芯片部分,负载板子直接接DC电源是可以开机的,请问是什么问题导致的呢?