• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 39 subscribers
  • Views 538 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TIDA-010208: Configuration BQ76952, BQ76942, BQ769142

Ahmed MOSRATI
Prodigy 195 points
Part Number: TIDA-010208
Other Parts Discussed in Thread: BQ76952, BQ769142, BQ76942, BQSTUDIO

Hi,

- How can I configure the following AFE (BQ76952, BQ76942, BQ769142) ?  

-how can I add a connector in the same PCB (for the BMS) to configure one of the previous AFE ?

  And if there's a schematic  example I'll be grateful !  

Best regards,

Ahmed.

  • 0
    TI__Expert 3356 points

    Can you be more specific on the questions? BQ76952, BQ76942, BQ769142 are different devices, you can configure the registers with I2C or SPI. 

  • 0 in reply to Ryan Tan
    Prodigy 195 points

    Hi Ryan Tan,

    I meant how to configurate  the AFE (BQ76952 for example) using BQ studio, to eventualy connect the PC with the BMS?

    Is it correcte to add a connector ( SCL_AFE, SDA_AFE, and GND) in the BMS  to interface between the controller MSP430 and the AFE (BQ76952,...) with I2C ? 

    -Another question:

    BAT- connected to GND  and Cell 0 ( the negative Battery terminal  = Cell 0 ), not connected to GND directly 

    i wanted to verify if the current (delivered by the battery) pass  by the two Diode D9 and D10?

    Best Regards, 

    Ahmed.

  • +1 in reply to Ahmed MOSRATI
    TI__Prodigy 285 points

    Hi ahmed

    ( 1) if you have a EVM based on BQ76952,  you can configure the BQ76952 by usb to connect BQstudio with EVM.  (EVM has integrated an MCU, which connects the data from IIC and communication to BQstudio through USB). please see the  Easy Configuration of BQ76942/52 Battery Monitors (Rev. A) for detail

    (2) usually, MCU has an IIC interface, which allows you to directly communicate with the BQ76952. in addition, MCU will communicate with BQstudio by uart.   

    (3) D9 is used to clamp the GND and VC0 at the moment of short circuit, which may raise the GND, therefore, VC0 will have a negative voltage, and VC0 has limited ability to withstand negative voltage. therefore, this diode will clamp the VC0 and GND to protect AFE.    in normal, there is no current float this diode.  D10 is used to prevent accidental exceeding of the max spec of VC0 pin.

    Best Regards

    Yebohr zhao

  • 0 in reply to Yebohr Zhao
    Prodigy 195 points

    Thanks Yebohr Zhao, Ryan tan

    This resolved my issue 

    Best regards, 

    Ahmed.