BQ77905: Temperature measurement with the BQ77905

Juan Cruz

Part Number: BQ77905

I have been thinking of using the BQ77905 as BMS. Since I am using 3 cells, it is better to have 2 NTC to sense the cell's temperature in a more reliable way.

I see that the BQ77905 only has one thermistor channel, is it possible to measure two NTCs? How would you do that?

over 3 years ago

0 Luis H. S. over 3 years ago

TI__Mastermind 42060 points

Hello Juan,

No, you would not be able to measure two NTC with the single channel.

The only way to have more is if you were stacking multiple devices, as each IC has a single thermistor.

Best Regards,

Luis Hernandez Salomon

Power management

Power management forum

BQ77905: Temperature measurement with the BQ77905