• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 275 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.

BQ40Z80: About BQ40Z80 MOS switching circuit

adam sun
Prodigy 180 points
Part Number: BQ40Z80
Other Parts Discussed in Thread: , BQSTUDIO

Hello,

Close to the weekend, I wish you all a happy weekend holiday~

I am the first contact with bq40z80, there are many questions, please forgive me.

There is a question about the circuit of BQ40Z80.

The MOS switch drive circuit of the BQ40Z80EVM-020 analog board is designed at the positive end.


Our MOS switch drive circuit is designed on the negative side.


So, is there anything that needs attention? Or is there anything different in bqStudio settings?

Adam

Best Regards,

  • 0
    TI__Mastermind 42060 points

    Hello Adam,

    We are here to help, do not apologize!

    I will look into this with someone in the team and we will give you feedback soon.

    Best Regards,

    Luis Hernandez Salomon

  • 0 in reply to Luis H. S.
    TI__Mastermind 42060 points

    Hello Adam,

    I consulted with someone in the team.

    The BQ40Z80 only supports high-side protection. Although it could work with additional circuitry, we don't guarantee proper performance or functionality.

    It is also likely that you will lose communication with the gauge when the low-side FETs are open. This means that you wouldn't be able to communicate with bqStudio any time the FETs open.

    Is there any reason why you want low-side protection? I would advice your team to instead design your board as shown on the BQ40Z80 EVM.

    Best Regards,

    Luis Hernandez Salomon

  • 0 in reply to Luis H. S.
    Prodigy 180 points

    Hello Salomon,

    Sorry for the late reply.

    Thank you for your suggestion, we will study the route again.

    Best Regards,

    Adam