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TINA/Spice/TPS23754EVM-383: power efficency of TPS23754EVM-383 in higher temperature (+85°C) and simulation file

user5057133
Prodigy 30 points
Part Number: TPS23754EVM-383
Other Parts Discussed in Thread: TINA-TI, , TPS23754

Tool/software: TINA-TI or Spice Models

Hi

 where can I download the simulation file of TPS23754EVM-383 evaluation board exportable under "TINA90-TI"?

Can I simulate this temperature architecture for control its power output up to 85 ° c?

 Can I load the power output of this board to a power (10w) less than max (25w) without having any effect on the frequency spectrum in input and output.

Is the production of the TPS23754 and its evaluation card guaranteed over 20 years

 Thanks

  • 0
    TI__Genius 9230 points
    Hello,

    I have notified our PD expert about your questions.

    Thanks,
    Thomas A.
  • 0 in reply to Thomas Amlee
    TI__Mastermind 41770 points
    Hi User5057133,

    Unfortunately, we do not have a TINA spice model for our PoE devices.

    For the frequency spectrum, do you mean EMI noise? Also do you mean change between power levels or with time? I do expect the frequency spectrum of noise, for example, to be different at different power levels (higher noise at higher power). But I don't expect it to vary much with time as long as the system is operating within it's recommended operating conditions.

    For lifecycle, I recommend reviewing the FIT data of the TPS23754. In the end, this is a system level spec and life cycle testing should be tested with the whole product (prototype).
  • 0 in reply to Darwin Fernandez
    Prodigy 30 points
    Hello
    Yes I am talking about frequency emi spectrum.
    We have selected this poe evaluation board TPS23754EVM-383 because it supply 12 output volatage however the power is far superior to our need.
    The power provided by the PSE for our application is 10w typical with a pick to 15w when powering up our PD
    So I need to know at 85 ° C that it is the available power output of this TPS23754EVM-383 evaluation board when the PD clamps its output power to 10w typical over the life of the system.
    Thanks
    Quantity 5000 pieces
  • 0 in reply to user5057133
    TI__Genius 9230 points
    Hello,

    85C falls within the recommended operating temperature limits for the TPS23754. The EVM is capable of providing 10W at this temperature, but has not undergone life cycle testing.
  • 0 in reply to Thomas Amlee
    Prodigy 30 points

    Hello,

    Yes I know this point!  (temperature level are setting at 80°C )

    It's important for me to know level of power efficency end to end at +80°C

    Thanks

  • 0 in reply to user5057133
    TI__Mastermind 41770 points
    Hi User,

    Typically the efficiency at high temp will be tested by an end equipment level so we don't test it at an EVM level. However, a conservative estimate given the increase in switching losses and higher resistances at higher temperature levels is 3% hit at high temp.