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Problem bq78350 + bq7692003PW

Roman Kislicyn
Prodigy 140 points
Other Parts Discussed in Thread: BQ78350, BQ78350-R1

Hello.

When using the bq78350 + bq7692003PW + 4 cells.
(Bq78350 is powered by the voltage regulator 2.5 V)

bq78350 overestimates cell voltage by 340 mV.(offset does not help)
bk7692003PW true test measures the voltage of the cell (Verified).

What could be the problem?

  • 0
    TI__Guru 73830 points

    There is a firmware bug in the bq78350 that will cause the cell voltage measurements to be off when using one of the AFE devices that have the 3.3V regulator output. The bq78350-R1 firmware fixes this, so you will need to upgrade to that firmware.