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关于BQ24133故障的咨询

Other Parts Discussed in Thread: BQ24133

我在使用BQ24133时发现:在适配器被拔出以后,ACDRV任然输出18V左右的电压,同事SW输出大概13V的电压?

充电电流正常(设定值为1A)。BATDRV驱动信号不正常,VREF电压正常3.3V

出现这种问题可能的原因是什么(一批次生产,有的是OK,有些不正常,希望找到原因,方便维修)?