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BQ24640充电电流不受限制

Other Parts Discussed in Thread: BQ24640

我用BQ24640做一个超级电容组的充电模块,这是其中BQ24640部分的电路图,VCC_BATTERY为24V,接入超级电容后可以充电,先恒流再恒压,但是无法通过ISET引脚设置充电电流,TPL0501输入0.6V设置充电电流为3A,但是充电电流会超过3A,无法设置,且经过测试V_REF的电压为0V,V_FB电压为3.7V,V_REGN=1V左右,和数据手册对不太上,怎么解决鸭求解答,很急。