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PoE 23754 PPD
Related Posts

  • Forum Post: TPS23754 PPD

    Yingpeng luo
    Hi: Eric. I have a question about TPS23754( or 23756). It is about pin 14(PPD). What would happen if PPD is higher than 8.3V (PPD2 threshold). The datasheet only says that class regulation would be enabled, what about the states of Hotmosfet and T2P? Thank you.
    on Nov 11, 2011

  • Forum Post: TPS23756 Hotswap MOSFET not blocking Auxiliary Voltage

    Michail Klimkovic
    Hi, I am evaluating TPS23756EVM for my future design. When I power the board with only Auxiliary power (e.g 24V, no cable in the RJ45 jack), there still appears voltage between VDD and VSS. The jumper configuration is as follows: J9 - PPD1 (PPD is pulled down to VSS by 5k49 resistor) J10...
    on Apr 14, 2012

  • Forum Post: TPS23750 dc/dc controler PWM. How it works ?

    Clem22
    Hello, I am a new beginner with PoE (Power over Ethernet). I'm working with the TPS 23750 on the evaluation board HPA 107. HPA 107 documentation : http://www.ti.com/lit/ug/slvu136a/slvu136a.pdf TPS 23750 documentation : http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber...
    on Apr 16, 2012

  • Forum Post: RE: TPS23754 in flyback mode for 1 Gig POE+ application

    Arunkumar PB
    Hi Eric, Thanks for the reply .So you mean that we can use TPS23754 in fly back topology for 1Gig application only thing that need to be taken care is the TYpe 2 giga- bit transformer.
    on Nov 14, 2012

  • Forum Post: TPS23754 in flyback mode for 1 Gig POE+ application

    Arunkumar PB
    Hi, We are planning to use TPS23754 in synchronous flyback mode for 1 Gig POE+ application. In TPS23754EVM-420 ref schematic ,the ethernet interface is not for 1Gig but TPS23754EVM-383 for active clamp forward converter the ethernet interface is for 1Gig. I want to know if we can use the TPS23754...
    on Nov 10, 2012

  • Forum Post: Qestions on TPS23754 Application

    Grant Wang
    In TPS23754 spec, maximum input operation voltage is 57V, absolute maximum rating is 100V. Is it OK for 72V input supply to be applied? For 802.3at compliant, TPS23754 is designed for <30W output due to PoE power classification. Is it possible to skip PD classification and output 30W~35W power...
    on Nov 28, 2012

  • Forum Post: TPS23754 / 56 Active Clamp instability at maximum current / lowest voltage

    Rasmus Erfurt
    Hello, I have implemented a TPS23754 circuit according to SLUA593 and SLUA469 (Emi). The circuit is modified to perform 25W at 70 degress celsius, using auxillary input voltage as low as 18V. To lower peak currents at this particular scenario I am not using the POE 3000F transformer, but the Coilcraft...
    on Feb 25, 2013

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