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BQ77PL900: How to start BQ77PL900 with cc3200 ??

prudhvi raj singh
Intellectual 320 points
Part Number: BQ77PL900
Other Parts Discussed in Thread: CC3200, BQ76925

Hi,

I'm using cc3200 LP and i have custom BQ77PL900 board and I want to use this board for monitoring the individual batteries. I don't have any Idea that how to start this board is there any example with cc3200 .

Please help me ASAP.

Thanks & Regards,

Prudhvi

  • 0
    TI__Guru 54715 points
    Hi Prudhvi,
    The bq77PL900 board would be connected to cells using whatever features were designed into the board. The bq77PL900 supports 5 to 10 cells and inputs must be maintained within the abs max limits. Once cells are connected the part wakes up from a voltage on the PACK pin, typically from application of a charger. See the VI(STARTUP) specification and figure 15. The board may have some feature for the MCU to apply a voltage to the PACK pin to wake the part, see the documentation for the board or consult with the designer.
  • 0 in reply to WM5295
    Intellectual 320 points
    Thanks for reply ,

    Is there any resource or code for monitoring the batteries with cc3200 or any other MCU.Please help me ASAP.

    Regards,
    Prudhvi
  • 0 in reply to prudhvi raj singh
    TI__Guru 54715 points

    Hi Prudhvi,

    I'm not aware of any code specifically for the cc3200 or bq77PL900.  The bq76925 is an analog output AFE.  There is bq76925 Example Code in the tools and software tab of its product folder which may provide some useful reference.  The application report 3~6 Cells Battery Management System Based On BQ76925+MSP430G2xx2 shows flow charts for an implementation with this bq76925 although code is not available. Again this may be a useful reference for a battery software although the register structure and part function differ from the bq77PL900.  Particularly note that bq76925 has a positive slope for cell voltage and stored calibration data while the bq77PL900 has a negative slope and calibration must be provided by the user.  There is code for digital output battery monitors on the website but those may have less benefit due to the output difference.  You may also check with the cc3200 community to see if they have a battery reference code.