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TI有一个参考设计你可以参考一下，针对太阳能充电大电流的，20A，带MPPT。
http://www.ti.com/tool/TIDA-00120?keyMatch=solar&tisearch=tidesigns
估计第一次上去需要注册TI账号才可以。
不知道电池板的功率多大。BQ24650小功率的太阳能充电芯片。
