Tool/software:
Dear TI support team,
We are using BQ76952 to design a BMS monitoring and control system, which is low-side control by DDSG and DCHG pins through TI MOSFET drive IC UCC27524AD. Everything is fine unless recently we encountered a problem that BQ76952 turned off discharge FET without any error message. This problem happened when we glue NTC thermistors on the top of FET to measure its temperature rise, as shown in the attached picture.
So, we are wandering under what other conditions BQ76952 will turn of FET, besides of normal errors such as OC, OV, OT etc.
The problem did not happen only once. When we try another board, the same problem happened. Please let us know:
1. Under what other conditions BQ76952 will turn of FET, without any error message?
2. How do we do to avoid such problem, if we want to monitor FET temperature?
Looking forward your kind support! Thanks!
Best Regards,
Yanhong
Please note that the glue is special for sticking electronic components, which does not conduct electricity.