BQ28Z620: Protection tolerances

Aidan Murray

Intellectual 2200 points

Part Number: BQ28Z620

What tolerances should I expect for over/under voltage, over charge, discharge current, ect...?

I couldn't find the answer in the datasheet or TRM.

over 1 year ago

0 Jose Couso over 1 year ago

TI__Mastermind 27321 points

Hi Aidan,

By tolerance in protection you mean how long the gauge can take to trigger the protection? If so, the gauge can take up to 1 second to trigger Firmware based protections.

Regards,
Jose Couso

0 Aidan Murray over 1 year ago in reply to Jose Couso

TI__Intellectual 2200 points

Hi Jose,

I meant if the overvoltage protections is set to 4300 mV, is there a range of values that may trigger it +- some percent?

I assume it isn't going to trigger exactly at 4300 mV, so what tolerance does the design need to handle?

+1 Jose Couso over 1 year ago in reply to Aidan Murray

TI__Mastermind 27321 points

Hi Aidan,

See below.

Protection will be triggered based on temperature since the device will adjust charging voltage based on temperature.

Regards,
Jose Couso

Power management

Power management forum

BQ28Z620: Protection tolerances