A: Models in PSIM have multiple levels of complexity, models start with behavior or ideal characteristics and progress to non-ideal device level characteristics. The ideal models are best suited for system-level simulations while the level-2 models can be used as a device level simulation with results comparable to a SPICE level simulation.
For example multiple model levels exist for:
- MOSFET – ideal, conduction loss only, thermal, level 2 (device)
- IGBT – ideal, conduction loss only, thermal, level 2 (device)
- Diode – ideal, conduction loss only, thermal, level 2 (reverse recovery)
- Op. Amp/comparator – ideal, non-ideal
- PWM control ICs – ideal, non-ideal
Ideal models are faster to solve and are best suited for simulations over multiple switching cycles, where non-ideal models should only be used when a few cycles are needed for the simulation.
Added with Version 11, is SPICE model compatibility and a separate SPICE engine.