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关于BQ24650的MPPSET

Other Parts Discussed in Thread: BQ24650

芯片BQ24650,采用推荐电路,MPPSET设置为17.8V,外接光伏电池板,光照不强时,电池板开路电压20V左右,接入BQ24650充电电路,因无法提供足够的充电电流,输入电压会下降,但并不是像手册中所说会减小充电电流,维持电压在17.8V,而是间隔充电。我查阅了之前的帖子,有人遇到类似问题,但未最终答复。帖子如下:

www.deyisupport.com/.../60269.aspx

查看光电池接入充电电路后的电压曲线也类似: