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BQ25720EVM: VBAT充电输出端无电压输出

Part Number: BQ25720EVM
Other Parts Discussed in Thread: BQSTUDIO

1.VIN输入端用稳压电源加19V电压,但是VSYS输出端只有默认6.5V,VBAT输出端无输出电压?

2.BQSTUDIO上更改Max Charge Voltage到12V以下VSYS输出端有输出,但改到12V及以上就没有输出了,VBAT输出端一直没有电压输出?

3.每次EVM断电后重新上电,有恢复到之前默认的配置数据?

请问BQSTUDIO需要怎么配置,谢谢!