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BQ41Z90: EV2400 + BQ41Z90 Connection

Fabio Soriano
Expert 4800 points

Part Number: BQ41Z90
Other Parts Discussed in Thread: EV2400, BQSTUDIO

Hi Team,

I need your help on the following request:

##################################

There is no acknowledgment with the EV2400 (in I2C or SMBUS) and BQ41Z90.

I attach a picture with this connexions: 

I use 16 resistors for sim the cells (220 ohms), a power supply in BAT+/BAT- (58V), a wire between BAT+ and parallel (J45), and a power supply in J47 (PACK+/PACK-)

Usually we have never problem with TI eval board.

 

I hope your reply as soon as possible, we are blocked.

 

Regards,

Fabio

  • 0
    TI__Mastermind 39165 points

    Hello,

    This question has been assigned and will be reviewed by someone on the application team when possible. In the meantime please attach .gg/.log/ data files associated with the project.

    Thank you,
    Alan

  • 0 in reply to Alan Frias
    TI__Expert 4800 points

    Hi Alan,

    In the meantime I attach the connection between EV2400 and the EVM.

    Regards,

    Fabio

  • 0 in reply to Fabio Soriano
    TI__Mastermind 31845 points

    Hi Fabio,

    Please send me an email if things become urgent.

    The issue is most likely that you need FW. Please follow the steps below.

    1) Remove all jumpers on J42

    2) Remove all resistor from the cell terminal blocks J1, J8 and J9

    3) populate a wire on J45 for the parallel path

    4) Populate J2 (already done)

    5) connect the EV2400 smbus port to J11 on the EVM

    6) apply ~10V across bat+/Bat-

    7) force open the BQ41z90.bqz

    8) go to the advanced comms tab and send 0x0F00 to 00, it should be green

    9) Try to program the FW I have attached.

    10) restart BQstudio, your device should now auto detect

    https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/bq41z90_5F00_v0_5F00_02_5F00_build_5F00_7.sig.enc.bq.fs

    Regards,

    Diego