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BQ24610充电电流不一致

Other Parts Discussed in Thread: BQ24610

制作焊接1批BQ24610的充电板,设置的充电电流为1.5A,在测试时,有些板充电电流正常为1.5A,有些板充电电流为1A,而有些板充电电流为0.5A。什么原因会导致这个现象呢?请指教!谢谢!

  • TI支持真心不给力

    可以确定肯定是硬件差异,检查一下VIN引脚的电压是否都一致,还有就是ISET和ILIM外部电阻精度是否都一致,这几个电阻是配置输入电流和充电电流的,一般充电芯片都是这种模式,外部电阻+内部寄存器