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BQ24650给单锂电池充电,MPPT=22.6V,输出电压设置为2.6V;输出电流设置为2A,为什么输出电流达不到2A,最大才0.8A?

Other Parts Discussed in Thread: BQ24650

对单锂电池充电,直流电源24V给BQ24650供电,根据应用电路,采用R3=1M,R4=56K,故MPPT=22.6V;Rs=20mΩ,故输出电流=2A;输出电压万用表测得2.6V。

问题1:固定直流电源24V供电,MPPT电压应该设置多少?

问题2:为什么此电路充电电流达不到2A,最大才0.8A?

问题3:为什么输出电压在2.58~2.6V之间波动?(用万用表测量)