BQ40Z80: Short-circuit in discharge, ASCD1 threshold, delay time issue

Hi Loic,

Can you please confirm that the SCDD bit below has not been changed to 1?

Regards,

Anthony Baldino

Hi Anthony,

AFE protection control = 70 so SCDDx2 bit equal to 0.

Regards,

Loïc

Hi Loic,

Just to confirm, was the value of the ASCD something different and then changed before this testing was done? If so, was a reset done after these changes were made?

Would it also be possible to receive the .gg file currently being used?

Regards,

Anthony Baldino

Hello Anthony,

No, the ASCD value is the same as before and has not changed.

I send you the .gg file in PM.

Regards,

Loïc

Hi Loic,

How was the .gg file exported from the gauge? I believe the .gg file sent was still in its program format. If possible, please send the .gg file using the export button on bqStudio.

Regards,

Anthony Baldino

Hi Anthony,

I sent you the .gg from the HexDump button on BQStudio. I sending you the .gg.csv from export button

Regards,
Loïc

Hi Loic,

Thank you for sending those files over, we will begin analyzing the gauge settings.

Can you please confirm the resistance of the sense resistor being used? Is it the standard 10mOhm?

Regards,

Anthony Baldino

Hi Anthony,

The sense resitor is 1 mΩ, 5W, 1%, AEC-Q200

Regards,

Loïc

Hi Loic,

Thank you for clarifying, I see that the current threshold for this protection is -33.3A. In the images above, it seems like the current is around -36.5A with some slight noise around it in the first image. Can you please confirm that the threshold is being broken for the full extent of the delay? Also, can you please try reducing the delay to 0s and see if there are still is an extension on the delay?

Regards,

Anthony Baldino