Stats

  • State Not Answered
  • Replies 3
  • Subscribers 27
  • Views 8429
  • Members are here 0
More Content

Convergence issue related to parametric sweep

amchampion

The above circuit works fine for me when running the simulation in Pspice until I try to run the simulation as a parametric sweep.  Sweeping, for example, c9 results in convergence issues all over my circuit that are not present if I run the values as separate simulation runs.  I am currently operating the circuit as an Hbridge with the four voltage controlled resistors operating as switches and the triggers are off screen circuits operating the resistors with tanh shaped pulses in the range of 50-100 nanoseconds pulse width.  I can provide more information as needed. I have tried finding the values where the parametric sweep stops and confirmed they work as a single simulation.   I am unsure why the parametric sweep sees issues that you would not see otherwise. Error message below:

Parents
  • AyushD
    0

    You can try below options :
    Try reducing the accuracy of ABSTOL / VNTOL from OPTIONS in simulation settings

    Increase the value of ITL4 from 10 to 50, also try changing RELTOL to a higher value

    Try enabling SKIPBP option from simulation settings.
    See if playing with these options work

Reply
  • AyushD
    0

    You can try below options :
    Try reducing the accuracy of ABSTOL / VNTOL from OPTIONS in simulation settings

    Increase the value of ITL4 from 10 to 50, also try changing RELTOL to a higher value

    Try enabling SKIPBP option from simulation settings.
    See if playing with these options work

Children
No Data
Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.