BQ40Z50-R1: RSOC

GARETH OU

Part Number: BQ40Z50-R1

Tool/software:

Customer has a question

The original Max Error was 1% and then entered SHUTDOWN mode After a period of time, the Max Error of charging wake-up will have a chance to change to 2% What is the reason for this? Just reset it and it will return to normal. Or charge and discharge it once more and it will return to normal.

4 months ago

0 Alan Frias 4 months ago

TI__Mastermind 27095 points

Hello Gareth,

We will continue to work on your question, today is a national holiday, Memorial Day.

Thank you,
Alan

0 Alan Frias 4 months ago in reply to Alan Frias

TI__Mastermind 27095 points

Hello Gareth,

Please reference this trend below for more information on Max Error %, but in summary max error increase when Qmax and Ra values haven't been updated for around 20 cycles. This doesn't affect the performance of the gauge rather showcase to the user the margin of error in SOC % calculation.

E2E:
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/975974/bq40z50-r2-how-does-maxerror-affect-charge-and-remaining-capacity

Thank you,
Alan

Power management

Power management forum

BQ40Z50-R1: RSOC