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Original question:

BQ78350-R1: Programming Tool (alternative to EV2300 / EV2400)

BQ35100EVM-795: Eval board tools?

Antonio Faggio
Expert 7900 points
Part Number: BQ35100EVM-795
Other Parts Discussed in Thread: EV2400, BQSTUDIO, BQ35100

Hi,

My KMM designs ECU for agricultural vehicles.

Customer would like to try eval board BQ35100EVM-795.....but in the manual it is mentioned that it is necessary to have the EV2300 or EV2400 interface.

I wanted to ask you if there was the possibility of being able to access this eval board with the PC software even with cheaper tools: they are both a bit dated tools (?) and customer would avoid to spend 200 Euros just to test the eval board.

I saw that some other users also asked the same question

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/789199/bq78350-r1-programming-tool-alternative-to-ev2300-ev2400

but I believe toy gave an alternative in private.

If any USB-I2C adapter can be used (to interface with your bqStudio PC tool) could you please tell me?

 

Thank you,

Antonio

  • 0
    TI__Guru** 105760 points

    Hello Antonio,

    One of the third parties is on TI.com: https://www.ti.com/tool/MKST-3P-ALT-EV2300

    But it is still costly alternative. The EV2400 is required for uploading the chem ID, if they are using the BQ35100 in ACC mode they are not required to have the EV2400 since no chem ID is needed. Also EOS mode is not required if they are just using the EOS alert, it would only be for SOH mode they need the EV2400.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    TI__Expert 7900 points

    Hello Wyatt,

    Thanks, the purpose of our test is to measure the consumption of our board (using CC2642 processor) and to have an estimation of power consumption (during the use of the device) in order to understand if we can reach the battery lifetime requested by our customer.

    Our primary battery is a coin manganese dioxide lithium battery....I don't know if we have to set an ID in order to obtain a right State of Charge from BQ35100 chip.

    In any case, do you think we should buy the EV2300/EV2400 or can you provide us with what we need for our tests?

    Best Regards,

    Antonio (a-faggio@ti.com)

  • 0 in reply to Antonio Faggio
    TI__Guru** 105760 points

    Hello Antonio,

    For Manganese Dioxide we usually use SOH mode which would require the chem ID. You can check for the battery in our chem ID database by downloading the chemistry updater. If it's not in the database then we would not be able to support it for SOH mode until a chem ID was created for it, primary cells need to have an exact match.

    If they are just trying to test the current consumption in SOH mode it does not matter what chem ID is uploaded, they can test this with any chem ID.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    TI__Expert 7900 points

    Hi Wyatt,

    I checked if the battery we are using if is present in the Chemical database of your software: I didn't find it.

    We are currently using the Murata CR2477X LiMnO2 Battery (1000mAh).

    Please, Let me know if I can choose another equivalent battery ID

    Thanks,

    Antonio

  • 0 in reply to Antonio Faggio
    TI__Guru** 105760 points

    Hello Antonio,

    We do not have a chem, ID for that battery, for primary cells we do not recommend using an equivalent chem ID since the voltages are critical for accurate gauging. A new cell would need to be selected for the application based on one of the chem IDs that already exist or this cell would need to be characterized.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    TI__Expert 7900 points

    Hi Wyatt,

    Ok thanks, which ID can you please recommend to do the test?

    BR,

    Antonio

  • 0 in reply to Antonio Faggio
    TI__Guru** 105760 points

    Hello Antonio,

    There are 2 options for this case, option 1 is to use a battery that is in our chem ID database already, and they will need to change batteries for their application. Option 2 is we would need to work together offline for characterizing the cells they are wanting to use, characterization will take 6 weeks minimum for primary cells.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    TI__Expert 7900 points

    Hi Wyatt,

    The project is already blocked and customer is only making some characterizations that their end customer requested...using that battery to evaluate its consumption when the system is in use.

    Is it then possible to create a new ID? Should I ask PLM or how is the procedure?

    Could the ACC mode give customer information on how much charge has been consumed overall since I activated the device?...considering that we have the CC2642 which communicates via BLE and the battery is Li-MnO2 type
    Thank you,

    Antonio

  • 0 in reply to Antonio Faggio
    TI__Guru** 105760 points

    Hello Antonio,

    Usually the first step for using the BQ35100 in SOH mode is to make sure we have the chem ID already or work with us to create a new chem ID if the timeline permits, otherwise BQ35100 cannot be used in SOH mode.

    ACC mode can be used to capture the small bursts of current where most of the passed charge would be measured, but you will not be able to leave the gauge in active ACC mode because it will consume large amounts of current.

    Please go through direct contact for chem ID discussions, instead of E2E.

    Sincerely,

    Wyatt Keller