• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 40 subscribers
  • Views 224 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.

Original question:

WEBENCH® Tools/UCC2897A: https://www.ti.com/lit/tsc/slum606

WEBENCH® Tools/UCC2897A: https://www.ti.com/lit/tsc/slum606

MANOJ GUNDA
Prodigy 130 points
Part Number: UCC2897A
Other Parts Discussed in Thread: PMP9656, TL431

Tool/software: WEBENCH® Design Tools

I am trying to design an isolated DC-DC converter using UCC2897A

I tried simulating by considering the reference design of TI  PMP9656. I have made some changes in the reference and simulating it. 

But i am not getting the desired output. Please help me with the issue. 

Please find the attached simulation file of TINA.UCC2897A_test_2.tsc

  • 0
    TI__Mastermind 31580 points

    Hi Manoj,

    I have tried simulating this file before, I changed the turns ratio of the transformer, changed the resistive divider for the TL431 and increased the output resistive load value to 2R and the file runs for 1 hour and the output rises to 5V or more before it fails to converge.

    On the TINA website there is a FAQ section which includes guidance on convergence issues,

    You may get some ideas to try from here.

    Regards

    Peter