BQ24166

原理图：

现象：电池管理芯片不能正常给锂电池BAT1/BAT2处充电，

情况说明：PiN21处的VIN是6V/5W的太阳电池板，充电时是否VDPM处的分压电压是要保持1.2V才会给锂电池BAT1/BAT2处充电？

Johnsin Tao：

HI：见Input Voltage Based DPM说明：
During normal charging process, if the input power source is not able to support the programmed or default
charging current, the supply voltage decreases. Once the supply drops to VIN_DPM (set by IUSB_ for USB input or
VDPM for IN input), the input current limit is reduced down to prevent the further drop of the supply. This feature
ensures IC compatibility with adapters with different current capabilities without a hardware change.

hualin han：

回复 Johnsin Tao:

输入的电压是高于VIN的4.2V的。将VIN的太阳电池板6V/5W改用直流电源，只有电压调至6.6V锂电池才会充电，充电电流1A以上，电压降到6.0V锂电池又不供电了，请问是什么问题？还有是不是pin1脚VDPM是不是只有保持1.2V的电压才会给锂电池VBAT1/VBAT2充电？