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BQ25792上电不动作

Other Parts Discussed in Thread: BQ25792

我司使用BQ25792开发了一个Demo板,输入电源为VBUS=5V,接口是Type-c,现在Type-c插入后BQ25792不动作。目前确认的动作如下:

1.插入Type-c,确认USB输入5V是有的,量测REGN/SW1/SW2等引脚信号确认7个脉冲后变为低电平

2.量测Type-c输入端电流,发现只有20多mA

3.插入电池,VSYS=VBAT,但是REGN/SW1/SW2等均为低电平

4.使用DC POWER SUPPLY拉高REGN,STAT为高电平,不能充电

请协助确认下问题点吧,谢谢!