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TPS2544: AM3352 D+/D- lines with the TPS2544

Nicholas Carley
Expert 8495 points
Part Number: TPS2544
Other Parts Discussed in Thread: AM3352

I’m in the process of doing a schematic review with the AM3352 and TPS2544.The AM3352 hardware schematic checklist(section 2.12), specifies that the D+/D- lines need to be tied directly to the USB connector or a USB hub, without any interruption.

That seems unreasonable as these inline power switches are pretty standard practice. Has this issue come up before and what is the suggestion from your team?

  • 0
    TI__Mastermind 28380 points

    Hi Nicholas,

    No not that I am aware of. The TPS2544 does not disturb the data lines during data transmission so there should be no issue with signal integrity due to our device. I do not see an issue with our device being connected on the data lines nor have I seen any issues from it.