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bq24610 不能充电的问题

Other Parts Discussed in Thread: BQ24610

原理图如附件, 用 BQ24610 设计给四串的电池充电, 实际测试发现没有充电电流。 接上电池,插入电源前, PG , STAT1,STAT2 都为高电平,插入电源后, PG 为低电平, STAT1 STAT2 都为高电平, VREF 3.3V 正常。(R23 0R 是铺铜连接到 Powerpad) 求大神指教!

24610 4S.pdf