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TPS23756EVM: I changed the transformer and do can't work

user4466095
Prodigy 10 points
Part Number: TPS23756EVM

Hello! In the TPS23756EVM reference board, I use PA2369NL see image below, How can I change other 
parameters? Now my Board can't work, the gate signal up close to 78%.

poe23756_25w.pdf

  • 0
    TI__Mastermind 21320 points

    Hello,

    Thank you very much for your question, and for providing your schematic. I would like to clarify, did you use the TPS23756EVM and then replace the transformer, or are you stating that the schematic is based on the EVM? 

    My initial comments on the schematic is that the pulse transformer, T3, appears to be in a different place than the EVM. I would suggest moving it to be between source and ground of Q4.

    Regards,

    Michael Pahl

  • 0 in reply to Michael Pahl
    TI__Mastermind 21320 points

    Hello,

    It has been ~1 week since our reply to you.  Has this resolved your question?  If so, please let us know by clicking the "Resolved" button.

    If we don't hear back from you by the end of this Monday, I will assume the matter resolved and close this thread.

    Thanks for your interest in PoE products from Texas Instruments,

    Regards,

    Michael Pahl