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bq24195升压配置,在电池电压为3.5V时无输出,在电池电压是3.8V时输出5.08V

Other Parts Discussed in Thread: BQ24195

如题,bq24195配置如下:

Bq24195_write_reg(1, 0x80);
delay(10000);

Bq24195_write_reg(4, 0xB3);

Bq24195_write_reg(5, 0x8A);

Bq24195_write_reg(7, 0x4B);
Bq24195_write_reg(1, 0x20);

此时VBUS是没有输入,OTG是高电平,请问TI工程师,我的这个配置在3.5V时没有输出是什么原因?怎么排查原因?谢谢!