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BQ25886 用适配器和用电脑USB充电问题

Other Parts Discussed in Thread: BQ25886

BQ25886 D+D-短接 极限配置为3A 用适配器充电电流2A 用电脑充电0.6A,且电脑USB电压被拉低到4.4V,电脑无警报,但USB不能通信——但是因为的应用是需要板子通过USB跟PC通信,且能充电!

问各位大神:如何调节可以满足既可以用适配器大电流充电也能用电脑USB小电流充电且可以通信?板子上是一个ARM,无人机界面。退而求其次,适配器和电脑都能充电不一定需要大电流,但是必须能通信?如何实现,谢谢!