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DRV8144-Q1: UV detection

Imelda Zhang
Expert 5025 points
Part Number: DRV8144-Q1

Hi Expert，

Thanks for your warm help!

As I saw the datasheet state the nFAULT pin is asserted low when the supply voltage on VM pin drops below the threshold, I wonder to know whether the driver can automatically recovery when supply voltage back to normal? Does it can automatically an retry at UV?

Looking forward to your reply!

Kind Regards

Imelda

 

  • +1
    TI__Mastermind 44855 points

    Hi,

    Thank you for your question. 

    I am assuming you have S-variant or H-Variant. Then device recover automatically from VMUV.

    However, if VM drop lower than VM_POR, device gets reset. Therefore it requires wake up sequence like CLR_FLT and SPI register re-programing to recover.

    regards

    Shinya Morita