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BQ24172充电电流不受控制,一直增大

Other Parts Discussed in Thread: BQ24172

2437.S1PRO-BQ24172充电页.pdf

        原理图如上:目前碰到的问题是BQ24172给三串两并电池(约等于三节)充电电流一直增大,不受ISET脚控制;ISET设置的最大充电电流是4A,用示波器测量电池线的电流会持续增大到5A(还有增大的趋势,因为担心损坏电池,所以没有继续测量更大的值),STAT脚持续输出闪烁LED灯,示意异常;如下是测量的部分脚的电压:

ISET:          0.794V
ACSET:      0.804V
FB:             2.08V
OVPSET:1.137V

请TI工程师协助看看问题,谢谢!