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TPS2363: Pin connection if one 3V3 rail is not used

Johnny Guo
Expert 4910 points
Part Number: TPS2363

Hi, team,

My customer has one question about TPS2363.

If one 3V3 rail hot swap is not used, how to connect related pins shown below?

  • 0
    TI__Guru 57737 points

    Hi Johnny,

    Each Channel of TPS2363 operate independently. So, even if you leave the pins of unused channel floating they won't effect the operation of other channels.

    In case you want to forcefully turn-off a channel you can tie SH33A to 3.3V and SL33A to GND to create a fast threshold condition so that the gate is pulled low internally.

    If you don't want to use both 12V and 3.3V of Channel A or Channel B you can pull ON A/B low respectively. If using SMBUS control you have option to disable the Channels via CNTRLA (02h) or  CNTRLB (03h).

    Please click "This resolved my issue" button if this post answers your question.

    Regards,

    Praveen