Other Parts Discussed in Thread: BQ25155,
Hi!
We are integrating BQ25120F3A and we got a little bit confused and couldn't find answer neither in integration manuals or FAQ. Previously we were using BQ25155 IC so we are adapting our existing code to the BQ25120F3A battery management.
The question is: Is there any way for the BQ25120F3A to detect that VIN is present so it can be read by MCU? Since /CD has dual role based on VIN presence, it's important for us to have this information so the MCU can manipulate /CD signal accordingly. Example problem we have is when user disconnects VIN during charging, the /CD stays low (since the charging was enabled) which puts the BQ25120F3A into High-Z mode so the MCU can't communicate with it via I2C. Unfortunately we can't use the /PG pin since we are using it as /MR shifted output.
Is it possible to provide us with some ideas how to reach solution or workaround? Any help would be much appreciated. Thank you very much and have a great day!
Best regards,
Michal