• Resolved

BQ40Z50-R3-DEVICE-FW: Gauge not charging

Intellectual 460 points

Replies: 5

Views: 86

Part Number: BQ40Z50-R3-DEVICE-FW

Hi,

I have a circuit using the BQ40z50-R2 (updated to R3) and the BQ24725A. The BQ24725A seems to work fine, as I can program it and the changes are applied. The problem comes with the voltage gauge, as it doesn't send a charging command to the charger. Even though the batteries are discharged, the current and voltage sent to the charger are zero. All the flags and warnings are normal (temperature included), so I can't find any configuration issue. Do you have any idea? Here is the schematic for the gauge just in case:

Thanks,

Federico

  • Here is a screenshot of the status flags and the Registers. The system is connected to a 15 V supply.

  • In reply to Federico Silva:

    Hi Frederico,

    Please try resetting the gauge. This is by sending command 0x41 or using the command panel reset button. If that doesn't work, please attach your gg file so that I can look at your settings.

    Regards,

    Batt.

  • In reply to Batt:

    Hi,

    We've already tried resetting with no success. I attach you the configuration file.

    Thanks,

    Federico

    8176.test.zip

  • In reply to Federico Silva:

    Please allow me 3 days to get back to you.

    Regards,

    Batt.

  • In reply to Batt:

    Hi,

    We finally found the problem and it was that we weren't connecting the TSx to ground as they aren't used. 

    Thanks,

    Federico