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BQ25756: 使用寄存器配置充电电流失效

Part Number: BQ25756

使用BQ25756给10串电池包充电时候发现一个问题,麻烦帮忙分析一下问题原因,谢谢。

通过I2C配置寄存器REG0x02_Charge_Current_Limit,将充电电流设置为500mA,读取该寄存器可以看到配置已经成功;

但是读取寄存器REG0x2F_IBAT_ADC发现此时充电电流是2.4A左右,配置的500mA并未生效;

此时读取寄存器REG0x21_Charger_Status_1,可以看到此时芯片处于Fast Charge模式,电流应是配置的500mA;