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BQ40Z50-R1: 2S1P的UPS模组,进入Shutdown模式,然后退出,出现充放电MOS管无法打开的故障。

Part Number: BQ40Z50-R1


如下图所示,package进入shutdown模式,Vpack电压下降:

Vpack低于2V后接入充电器可以正常打开充放电MOS管;

Vpack高于2V后接入充电器无法打开充放电MOS管;

如下图波形:

电量计参数如下:

原理图如下: