Support Resources Faq Q: How are the devices modelled in PSIM?

Q: How are the devices modelled in PSIM?

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.