BQ40Z80: QMAX not updating -> FCC jumps

Reed Christiansen

Part Number: BQ40Z80

Tool/software:

Hello,

Hoping you can help debug an issue with our battery design utilizing the BQ40Z80. QMAX does not appear to be updating during normal cycling (with long, multi-hour rests - Rest bit is setting).

Additional can you please provide insight into Min Delta Voltage and Max Delta voltage and how they are used to gate QMAX updates? Is Max Delta Voltage a maximum allowable cell to cell delta for a QMAX update to occur, or something else?

I can provide logs and parameters - please advise.

Thank you

2388.discharge_log1.log discharge_1_params.gg.csv

1 month ago

0 Alan Frias 1 month ago

TI__Mastermind 26395 points

Hello Reed,

This question has been assigned and will be reviewed when possible. In the meantime you can provide the associated .log and .gg files with the project.

Thank you,
Alan

0 Reed Christiansen 1 month ago in reply to Alan Frias

Prodigy 100 points

Hi Alan - log and gg provided. I have more logs if needed

0 Reed Christiansen 1 month ago in reply to Reed Christiansen

Prodigy 100 points

Alan - have you had a chance to look at the log?

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Power management forum

BQ40Z80: QMAX not updating -> FCC jumps