TI中文支持网用BQ24650方案给电池充电，输入24A,2A(实际为24A,0.5A左右)，带电池实际输出为12V,1A,不管调整采样电阻多大，实际电流都为1A,(用SRN,SRP压差除以阻值)。实际测量Vmppset，VREF，Vregn电压都正常。下图为模块原理图，请教问题可能出在哪里。感谢。
Star Xu：
您好，您的电池电压是多少，确认电池是不是进入CV模式，所以电流达不到设定值
yubao chen：
回复 Star Xu:
你好，电池是11.7V,没有进入CV模式
yubao chen：
回复 Star Xu:
换了两颗Rdson较小的MOS管，电流能起来，请教是不是和MOS管有关系？
Star Xu：
回复 yubao chen:
您好，跟Rdson有关系的。
The max charge voltage of your battery, and not the nominal voltage, as the output voltage of the BQ24650 IC should correspond to max charge regulation voltage of the battery.Depending on charge current, external components should be chosen accordingly to minimize voltage drop at the input (RDSon, fwd voltage drop of diode, trace impedance et). This is because you have small delta between input and output voltage, and you want to avoid the SLEEP threshold being hit, as this is the minimum delta between input and output voltage, for which charger can operate.
