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BQ24735: 无法给电池充电

lehua zhao
Prodigy 10 points
Part Number: BQ24735


1.当只接入适配器（DC 19V6A）时，ACDET量测为2.8V,满足2.4V-3.15之间的要求，主板可以通电。当接上锂电池(3节串联锂电池)时，设置充电电压13V,充电电流3A，ACDET的电压会跳动，跳到2.4V以下，导致适配器一会连接一会断开。下图时示波器量测ACDET的波形。

2.下面是充电电路的原理图