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  • RE: TPS23758: Recommended transformer for 3.3V Ouptut

    Hi Daniel, Thanks for your reply. I did not have test experience with TPS23758 at 3.3V. I could find two efficiency data with TPS23753A. Among them, TPS23753AEVM-004 has a slightly better efficiency. TPS23753AEVM-002, POE70P-33L or 835-01045FC was…

  • TPS23753AEVM-004 typical current

    Other Parts Discussed in Thread: TPS23753AEVM-004 What is the typical current of TPS23753AEVM-004 from 12V adapter, with no load at output?

  • RE: TPS23754: PoE not powering with Ethernet/Network Switch(PSE) works with PoE injector

    Hi Karthik, Thanks for reaching out. Questions: Are there known differences between PoE implementations in Fast Ethernet (10/100) magnetics versus Gigabit that could cause this behavior? A: For data transformers, please make sure both design…

  • RE: TPS23753A: Power dissipation

    Hi Jieun, Please see the measured power of TPS23753AEVM-004 ( www.ti.com/.../TPS23753AEVM-004): 48-V RJ45 input at open load condition: Vin = 48V, Iin = 14.03mA, Vout = 3.3V 12-V VDD-RTN adapter input at open load condition: Vin = 12V, Iin = 21…

  • RE: TPS23754: spec check

    Hi Diang Thank you for your detailed comment We found reference design on 5V@2A, can we reference it? Which is the latest design? TPS23753AEVM-004: Evaluation Module for TPS23753A.. (Rev. F) TPS23753AEVM-235 Evaluation Module (Rev. A)
    • Answered

  • TPS23753A: TPS23753 stop switching

    Resolved
    Part Number: TPS23753A Other Parts Discussed in Thread: TPS23753 , PMP8803 , Tool/software: I try to implement device with PoE using TPS23753. As reference I took PMP8803 design. It start, I able to see 12V on output but it is not stable. It looks like…
    • Resolved
    • Answered

  • RE: TPS23753: Simple PoE PD Type 1 class 1 Recommendation

    Resolved
    Hi Jared, Thanks for reaching out! TPS23753AEVM-004 could be a design reference for your case with has 3.3V/3A output. If you want smaller size, TPS23755 with primary side regulation could be considered but its load regulation is worse than the…
    • Answered

  • RE: TPS23753A: TPS23753A to design a buck converter, Vin 36~57V，Vout 24V 400ma to ~500ma

    Resolved
    Hi Rob, Thanks for your follow-up. POE13P-24L looks good for 24-V ~500 mA application. The windings is If you have a TPS23753AEVM-001, it looks easier to do some jump wires to only configure the secondary side. If you have a TPS23753AEVM…
    • Answered

  • RE: TPS23750

    Resolved
    Hello Oleg, Please review our TPS23753EVM-004 https://www.ti.com/tool/TPS23753AEVM-004 The TPS23750 is an active part at this time, but we cannot speak to the entire BOM since so many parts are sourced by other vendors. Let me know if you have…
    • Answered

  • RE: TPS23753A: PMP7355 design issue, 20hz saw tooth output on no load

    Resolved
    Hi Tom, I have validated the changes to TPS23753AEVM-004 for 5V operation and can report that it performs as expected. As mentioned earlier the original design used a POE13F-50LD that has a primary inductance of 40uH. When calculating the minimum inductance…

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