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BQ79616: Daisy chain configuration in Battery Management System

TI-CSC
Genius 11140 points
Part Number: BQ79616

Tool/software:

Hello E2E Experts,

Good day.

I'm conducting research on a Battery Management System using BQ79616 as Battery Management IC in a daisy chain configuration. After reading relevant technical documentation, I have a few questions:

  1. Should I use a BQ79616 or the BQ79600 as the base device ? What are the advantages and disadvantages of these two methods?
  2. Are there any requirements for the MCU? Is STM32F103C8T6 compatible with this system? If it's not, can you recommend some popular MCUs that are easy to buy and program?

Regards,

TICSC

  • 0
    TI__Mastermind 37410 points

    Hello,

    TI-CSC said:
    Should I use a BQ79616 or the BQ79600 as the base device ? What are the advantages and disadvantages of these two methods?

    It depends on the application. Typically if you are stacking multiple BQ79616, you may want to have a BQ79600. The BQ79600 is meant to isolate the high-voltage domain of the battery pack, from the low-voltage domain of more sensitive components, such as the MCU. The MCU can communicate with the BQ79600 through SPI or UART. 

    If using a MCU with the BQ79616 directly, you would ideally use an isolator between the AFE and MCU. One thing to note is that the BQ79616 can only communicate through UART when using a MCU.

    TI-CSC said:
    Are there any requirements for the MCU? Is STM32F103C8T6 compatible with this system? If it's not, can you recommend some popular MCUs that are easy to buy and program?

    I think you may want to post this question to the MCU team. I am not sure what are their latest recommendations for MCU's for these applications.

    Best Regards,

    Luis Hernandez Salomon