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TPS564201: Unencrypted Simulation Model

JJulie
Prodigy 20 points
Part Number: TPS564201

Hello, 

I'm trying to simulate this device in LtSpice and I couldn't find an unencrypted model for the TPS564201. I noticed in this thread https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1055198/tps7a4101-ltspice-simulation-model-unencrypted that come products are unencrypted, but not presented on the web. Is this the case with this device, and if so how can I get access to it? 

  • 0
    TI__Genius 13451 points

    Hi Julie!

    We can't give unencrypted model about this device. If you want to do some evaluation, we can help do that.

    Shuai

  • 0 in reply to Shuai Fan
    Prodigy 20 points

    So I have the part currently and I am evaluating it, however I want to simulate it in such a way that that I can recreate the measurements I've generated in the lab.

    I had a colleague with a Pspice simulation who was able to generate the circuit under test, however the simulation was not able to model the lab measurements at all. Instead of regulating at -6.3V like we see in the lab, the circuit output at R6, our load, stayed at a constant -7.75V with no ramp up, regardless of how the feedback resistor R8 was changed. From my intuition, this would suggest that the model is behavioral. I want to confirm that, however, I cannot determine that with an encrypted model. 

    I attached the simulation of the 5.3V output version of this model which does match our lab results. 

  • 0 in reply to JJulie
    TI__Expert 8100 points

    Hi JJulie,

    My colleague will give you reply soon!

    BRs

    Zixu

  • 0 in reply to Zixu Wang
    TI__Genius 13451 points

    Hi JJulie!

    I remember that you had another ticket ask the same question about the sink current ability of this device and you also close that ticket.

    I guess the topic of this ticket is the same. Do we still need to follow up in this ticket?

    Shuai

  • 0 in reply to Shuai Fan
    TI__Genius 15347 points

    Hi JJulie,

    Since long-time no activity, I will close this thread. If you have further questions, please add a new reply to re-open this thread.