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BQ24171: 充不进去电

Part Number: BQ24171


调试时发现充不进电,指示灯闪烁。

 充电IC启动测试结果:mos正常导通了,Vref(3.3V),Vregn(6V), TS脚电压2.6V左右,SW的没有波形,处于一直拉高7.8V的状态。

下面有原理图,请帮忙看看什么问题?