• State Resolved
  • Locked Locked
  • Replies 9 replies
  • Subscribers 38 subscribers
  • Views 694 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Bode with Pspice for TI: DCDC loop simulation

yuqi liao
Prodigy 40 points
Other Parts Discussed in Thread: TPS62065, TLV62568

Hello，

      I have some problems in the loop simulation recently. How to complete the DCDC loop stability simulation,

      I use the AC scan on the PSPICE FOR TI, but the final waveform is strange. Can you provide a complete step for the DCDC loop simulation of bode diagram.

      Please help me to answer it !

      Thank you

  • +1
    TI__Expert 8756 points

    Hi,

    Transient models does not support bode plot simulations. You would need an average model for that. Unfortunately, I could not find an average model for this device.

    Thanks!

    Best regards

    Sneha

  • 0 in reply to Sneha
    Prodigy 40 points

    Hi,

         Thank you very much for your answer. How do I identify the average model? Then I would like to ask if there is any problem with the simulation steps of my bode diagram.

    Kind Regards

    Yuqi

  • 0 in reply to yuqi liao
    TI__Expert 8756 points

    Hi Yuqi,

    The average models are usually uploaded into the product page under "design tools and simulation" section. 

    https://www.ti.com/product/TPS62065

    We have not developed the average model for TPS62065. Hence, it is not available in the product page.

    Best regards

    Sneha 

  • 0 in reply to Sneha
    Prodigy 40 points

    Hi Sneha，

         Thank you for your reply.

         Could you please provide a power model with average model developed. In addition, I would like to learn some technical documents about power stability test and simulation, hoping to get your help!

    Kind Regards

    Yuqi

  • 0 in reply to yuqi liao
    TI__Expert 8756 points

    Hi Yuqi,

    Did you mean you would like to know about some other device which already has a developed average model?

    If yes, could you provide your desired device specifications so that I could recommend some devices? What is your end application?

    Thanks!

    Best regards

    Sneha 

  • 0 in reply to Sneha
    Prodigy 40 points

    Hi Sneha，

         Yes,I would like to know about some other device which already has a developed average model.

         It would better to buck Power. There is no other special requirement. It is only used to explore the relationship between loop stability and peripheral devices, such as the relationship between loop with Feedforward Capacitor, output capacitor and input capacitor.

    Kind Regards

    Yuqi

  • 0 in reply to yuqi liao
    TI__Expert 8756 points

    Hi Yuqi,

    Okay. Understood. I will look for a device with average model and update you by early next week. 

    Thanks!

    Best regards

    Sneha 

  • +1 in reply to Sneha
    TI__Expert 8756 points

    Hi Yuqi,

    Please find attached the average model for TLV62568 here. : https://www.ti.com/lit/zip/slvmdj5

    You could try to do the Ac analysis with this model,

    Thanks!

    Best regards

    Sneha 

  • 0 in reply to Sneha
    Prodigy 40 points

    Hi Sneha，

         Thank you for your reply！

         I get it.

    Kind Regards

    Yuq