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SPICE model of TPS40210 - difference between transient and average models ?

Sheng-wei Wang
Prodigy 70 points
Other Parts Discussed in Thread: TPS40210

Hi,

I just downloaded the SPICE model of TPS40210 : http://www.ti.com/litv/zip/sluc101d

There are three SPICE models of TPS40210 inside the zipped file,

  • TPS40210_TRANS_START
  • TPS40210_TRANS_STEADY
  • TPS40210_TRANS_AVG
I have no idea what's these models differ to each other, or which one should I use for my simulation.
I want to simulate if I can dynamically change the output voltage by varying the feedback resistance on FB pin of TPS40210, thanks.
  • 0
    TI__Mastermind 39210 points

    Hi Sheng-wei,

    The Startup and Steady State models are used to run time domain simulations. The Average Model is used to run frequency doamin simulations (Bode Plots). The difference between Startup and Steady State model is that in the Steady State model, initial conditions are given to some nodes to make the output start directly in the steady state contition. In the Startup model, VOUT will start from 0V and slowly ramp up to the desired VOUT.

    I hope that answers your questions. 

    Best regards,

    Nikhil