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BQ25570: 对该芯片MPPT功能的一些疑惑

Part Number: BQ25570

我现在有一个TENG的器件,没有测过它的I_V曲线,但是大概开路电压有7V左右,匹配电阻下有三点几伏,电流为mA级。请问在这种情况下,我怎么得到这个器件的最大功率点?BQ25570的Roc1,Roc2又怎么取呢?或者说这款芯片的MPPT功能是自适应的,只要我把器件和芯片连接在一起,他就会自动寻找到MPP点,Roc1,Roc2只是用于细调吗?