SIMetrix/SIMPLIS Intro: Getting Started with Fast Power Electronics Simulation refers to the foundational onboarding process and tutorial ecosystem designed to teach engineers how to rapidly model switching power systems.
The software packages two distinct, integrated simulation engines: SIMetrix (a highly optimized SPICE-based engine for analog/digital circuits) and SIMPLIS (Simulation for Piecewise Linear Systems), which is engineered specifically for power electronics and runs 10 to 50 times faster than conventional SPICE. Key Concepts & Simulation Core
The introductory learning path focuses heavily on how SIMPLIS achieves its extreme speed advantages over traditional tools:
Piecewise Linear (PWL) Modeling: Instead of solving complex, non-linear equations like standard SPICE, SIMPLIS models devices (MOSFETs, diodes, inductors) using straight-line segments.
Linear Topologies: The circuit is characterized as a cyclical sequence of linear topologies, making it highly accurate for switched-mode power supplies (SMPS).
SPICE Compatibility: Built-in translation tools allow you to convert non-linear SPICE models into SIMPLIS-compatible PWL formats upon placing them into the schematic. The Three Pillars of SIMPLIS Analysis
Getting started requires mastering three fundamental analysis modes, which bypass the need for tedious manual small-signal “averaged” modeling:
Transient Analysis: Standard time-domain behavior testing, operating 10x to 50x faster than traditional equivalents.
Periodic Operating Point (POP): A unique, proprietary analysis mode that instantly detects the steady-state switching waveform of a system without waiting for long thermal or electrical transients to settle.
AC Analysis: Performs a frequency response sweep directly on the switching circuit. Note: A POP analysis must run successfully first to establish the steady-state point before the AC sweep can execute. Step-by-Step Initial Workflow
According to the official SIMPLIS User Manual, a beginner’s simulation workflow follows five sequential actions:
[1. Draw Schematic] ➔ [2. Add Sources] ➔ [3. Choose Analysis Mode] ➔ [4. Run Simulator] ➔ [5. Graph Results] SIMetrix/SIMPLIS User’s Manual
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