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BQ25150: Overconsumption before the very first VIN and after a charge id done

Aurélien Fillau
Expert 1710 points
Part Number: BQ25150

Hello,

We are using the bq25150 in our project and we are facing two issues. 

- first, i have noticed that if i don't have VIN, i cannot communicate with the charger but as soon as VIN appears, communication is enabled, even if VIN disapears. It is not a big deal, the issue we are worried about is that before the very first VIN appears, i can see an overconsumption. Is it normal ?

- 2nd : As soons as i get charge done flag in the status register, the charging is stopped and i can see an overconsumption flowing back from the battery (1 or 2mA)

If someone could help about these two issues, don't hesitate.

Here is my schematics :

For now, NTC is bypassed with an additional 10k resistor !

Best regards,

Aurélien