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充电两天后,BQ24133烧焦了,板子面目全非,求高手解决!!

Other Parts Discussed in Thread: BQ24133

 

注明:该电路可以进行充放电,但在充电老化两天后,BQ24133芯片烧焦,这是否与11管脚TTC直接接地有关?

充电前的电路板如下:

充电后的板子情况如下:

电源管理原理图-signed.pdf