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DRV8343-Q1: question about VDRAIN

Ivy Jin
Expert 4535 points
Part Number: DRV8343-Q1

Tool/software:

Hi team,

1. May I ask if any RC filter need to be added to the VDARIN pin? If yes, do you have any recommended value? 

2. May I know what the VTH value is when the motor output is shorted to the power supply?

Thanks in advance！

Regards,

Ivy

  • 0
    TI__Genius 12231 points

    Hi Ivy, 

    Thank you for your question.  

    Please let me respond today with an answer to these questions. 

    Best Regards, 

    -Joshua

  • 0 in reply to Joshua Maize
    TI__Genius 12231 points

    Hi Ivy, 

    Ivy Jin said:
    1. May I ask if any RC filter need to be added to the VDARIN pin? If yes, do you have any recommended value? 

    There does not need to be a filter on the VDRAIN pin input, it should be directly tied to the drain of the MOSFET/Battery output. 

    You want to minimize any difference between the actual MOSFET drain and the VDRAIN pin. 

    Ivy Jin said:
    2. May I know what the VTH value is when the motor output is shorted to the power supply?

    It appears this information is not available to give out, as it is an internal threshold for the device and not externally spec'd.

    May I ask what the reason for the inquiry is?  If there is any concern regarding the short-to-supply/short-to-GND features I will gladly help! 

    Best Regards,

    -Joshua