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DRV5012: Part Derivate - Reverse Output Polarity

eld
Prodigy 10 points
Part Number: DRV5012
Other Parts Discussed in Thread: SN74LVC1GU04, DRV5053

Tool/software:

Hello, 

is Texas planning to release the DRV5012 with an inverted Output as shown below. 

Weird question, sorry. Thanks :) 

  • 0
    Prodigy 10 points

    Just wondering as many Sensors exists in all flavors and the DRV5012 has no derivates. 

    Obviosly i could implement the inverting logic in the circuit, but out-of-the-box would be better.

  • +1 in reply to eld
    TI__Mastermind 26335 points

    Hello Eld,

    Its not currently on our roadmap.  However, if you would like to share details on what you plan to do with it, we can assess whether it is something we might consider providing in the future.  You can send me a private message if you want to pursue that option yet dont want to share your details in the public forum.

  • 0 in reply to Patrick Simmons
    Prodigy 10 points

    Hi Patrick,

    application would basically be:

    The output of the DRV5012 is connected to the Gate of High-Side P-Channel MOSFET, which switches the load on/off depending on North/South. 

    The desired behavior would be:

    NORTH -> Load off (DRV5012 output high);

    SOUTH -> Load on (DRV5012 output low)

    Which is the opposite behavior of the DRV5012. 

    The workaround is a inverting logic with MOSFETs, except you have a better idea (?):

    Best regards

  • 0 in reply to eld
    TI__Mastermind 26335 points

    Hey Eld,

    Thanks for sharing that, I will pass it along.  As of now I dont have a workaround for you, but I think on it a little and see if I can provide feedback on Monday.

  • 0 in reply to Patrick Simmons
    TI__Mastermind 26335 points

    Hey Eld,

    That definitely is one way to get your desired behavior. To save on space, maybe you can find those mosfets in an integrated package like DMC31D5UDAQ-7B.  Alternatively, perhaps a Not Gate like the SN74LVC1GU04 could be used. 

    An alternative might be to use one of our linear devices with a window comparator such as in this circuit example: https://www.ti.com/lit/an/snva832/snva832.pdf.  If you expect your supply to be stable, out of our linear devices you might consider one of our ratiometric parts, otherwise you might want to use the DRV5053.