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BQ24610充电异常



最近在做充电器,同一个电路板上做了4路充电电路,但是有一路始终充电异常,具体现象就是充电过程中会自动断掉不充,重新提供AC则继续充,用示波器观察HIDRV发现没有工作在同步状态,不连接电池的时候这一路的各个信号和正常充电的那三路的信号一样,只要连上电池就不能正常充,下图是测得BTST和PH 的波形,周期是11.8us,负半周是4.8us,