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bq24133 随输入电压变高,电流异常增大

Other Parts Discussed in Thread: BQ24133

TI专家好,

采用BQ24133手册典型电路,给2S电池充电,设置1A电流,在输入是9V时 充电电流是1A-正常;增加输入到10V,电流增大到1.2A;再加大输入电压到11V,电流增大到2A——异常,电感SW波形也未见异常。

这个会是什么原因呢?