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EV2400: EV2400 replacement

Amith Bysani88
Prodigy 100 points
Part Number: EV2400
Other Parts Discussed in Thread: BQ4050,

Hi Dear,

I recently purchased a new EV2400 from TI.com to program the bq4050 BMS. kindly find the invoice below.

EV2400 is not working, I need help to replace the new product with the existing one which is defective.

I had a discussion with customer support of TI.com they suggest me to post on this forum, to get help.

please help me out to get a new product instead of a defective one.

Thanks & regards 

-Amith

  • 0
    TI__Mastermind 42535 points

    Can you please explain how you came to the conclusion that the device is not working? Please check if the ev2400 lights up when it's connected to USB. For Win 10 you have drivers that Windows already has. The green LEDs should light up when the ev2400 is connected to the PC. As far as the device goes, please check if you are getting voltage on the Vcc pins on the ev2400.

  • 0 in reply to Batt
    Prodigy 100 points

    Hi Batt,

    Thanks for your quick reply.

    One of the IC(U9) on my board heating rapidly when connected to the power supply.

    Even though the IC heats up rapidly green lights are working fine.

    I am using a purely using a new board, Even though problems arise like this. please help me to get out of this problem.

    Thanks & Regards 

    -Himavanth

  • 0 in reply to Amith Bysani88
    TI__Mastermind 42535 points

    Hi Himavanth,

    So, the ev2400 does power up. The next step is checking if your Vcc pins have voltage on them. Can you please try that? The ev2400 is a master, so if you scope it you should be able to get pulses. The frequency is 100kHz if you want to try that out.

    We need to make sure the device doesn't function before a replacement can be requested.

  • 0 in reply to Batt
    Prodigy 100 points

    Hi Batt,

    I am able to detect my kit on PC as I removed one of the IC on the board.

    I can you look into my registers and tell me why my recharge FET(DSG_FET) is not working.

    In my case, FET_EN, CHG_FET, DSG_FET bits in the manufacture status register is HIGH, which means FET's should be on right?... But in my case, it is not.

    In my circuit, I left the FUSE pin floating. If I connect fuse pin ground board is not detecting completely.

    please help me out to get out of this problem.

    Thanks & Regards 

    -Himavanth

  • 0 in reply to Amith Bysani88
    Prodigy 100 points

    Hi Batt,

    I am using the custom circuit from bq4050 datasheet.

    I had a strange situation in case of LED handling on the BMS.

    1.  When LED_EN in manufacture status register HIGH:

    when I pressed the button connected to DISP pin it should blow_up, but in my case, it is not.

    2. When LED_EN in manufacture status register Low:

    As LED_EN bit in manufacture status is LOW, so when I pressed the button connected to DISP pin it shouldn't blow up. right! 

    1. are my assumptions are correct in both cases? if my assumptions are correct then tell me why is it functioning in the reverse order?

    Thanks & Regards 

    -Himavanth

  • 0 in reply to Amith Bysani88
    TI__Mastermind 42535 points

    Hi Himavanth,

    I see that your temperature reported is -53.4C. You are in UT condition and in this state, you also have FET_EN off per your registers here. Set the gauge to use an external thermistor or an internal thermistor at room temp. You can then use the FETs.

  • 0 in reply to Amith Bysani88
    TI__Mastermind 42535 points

    LED_EN is a toggle command. Looks like you have disabled it first.

  • 0 in reply to Batt
    Prodigy 100 points

    Thank you for your reply.

  • 0 in reply to Amith Bysani88
    Prodigy 100 points

    Hi Batt,

    I connected FUSE pin on the bq4050, that gives me correct functionality. 

    When I tried to connect my BMS to the EV2400(with FUSE connected to GND), shows no communication found, I think my BMS got damaged(not sure need to check) when I soldered Fuse pin to GND. 

    Finally resolves my issue when FUSE connected to GND properly.

    Thank you once again. Great Support...!

    Thanks & Regards 

    -Himavanth

  • 0 in reply to Amith Bysani88
    TI__Mastermind 42535 points

    You're welcome, Himavanth. Good luck with your BMS device.