• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 62 subscribers
  • Views 114 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.

UCC27211: UCC27211

user3231337
Prodigy 40 points
Part Number: UCC27211

i tried to simulate UCC27211 as sluaa58.pdf in Tina Transient Analysis. The Transient Analysis End display is set to 20ms. When I simulated this schematic, I found it always stop at 10ms and can not be finished. Could you please help to check what's the problem in it. Thanks.

UCC27211 schematic as below:

V3 setting as below:

V3 setting as below

The simulation stops at 10ms and error as below:

  • 0
    TI__Expert 8365 points

    Hey,

    Thank you for your question regarding the UCC27211.

    It appears that when you try to turn the FETs ON with the input signal, you get this error.

    I think it would be beneficial to add a parallel capacitor to R4 as a load.

    It also may be a good option for troubleshooting to make a simulation with no FETs and just a capacitor and see if that works.

    Let me know your results and if you have any further questions.

    Thank you,

    William Moore

  • 0 in reply to William Moore
    Prodigy 40 points

    Hi William,

    Thank you for your reply.

    Could you tell me why R4 needs a parallel capacitor?

    When I added a 1nF capacitor, it still can not finish the simulation. If changed it to 10nF, it can finish the simulation.

  • 0 in reply to user3231337
    TI__Expert 8365 points

    Hey,

    It is good to hear that you were able to get the simulation to work.

    With only a resistor as the load, the transients such as dV/dt and di/dt can be very high and cause problems with simulations. With the capacitor installed, it helps to slow down these transients so that the simulation can complete and not violate operating conditions with these high transients.

    Let me know if you have any further questions.

    Thank you,

    William Moore