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Monte Carlo simulation automatically modifies component tolerances？

Zhengzhi Wang

When performing Monte Carlo simulation to modify the tolerances of capacitors and resistors, I modified them manually.

For example: manually modify from 10% to 5%, and then run the simulation to see if the results meet the requirements.

Is there a way to automatically change the tolerance value from 1%, 5%, and 10%, and after the run is completed, I can observe the output simulation results in these situations at once.

Thank you very much!

  • +1

    One way to achieve this could be running Pspice in batch mode. You will need to create multiple .cir files each dedicated to a tolerance value. In the batch file you can call these cir files one by one.

    To run this, the "psp_cmd.exe" executable is called from the command line. This executable resides in the same location as 'pspice.exe'.

    Example: <CDS_INST_DIR>\tools\pspice\psp_cmd.exe -r <path to cir file>

    Hope this helps.

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