Model stepping in PSpice

Starting with SPB 25.1, PSpice introduces model stepping, which allows multiple models of the same component to be simulated in a single run and compared directly in the Probe window. All results are stored in one data file, making side‑by‑side analysis simple and efficient.

This is done using the. modelstep directive. For example, as shown in the following image, for the given circuit, a .modelstep statement has been defined as:

@PSpice:

.modelstep STPSC10065D MUR1560

Now, tool will simulate the design with both the PSpice models for D1 as defined in the above statement (STPSC10065D and MUR1560).

When the simulation is run, PSpice automatically steps through both models and displays their results together in the Probe window. This makes it easy to compare waveforms and performance and select the most suitable device. The Probe output also shows the total job time for all stepped models.

Try this and share your insights!

Happy Learning !!