SIMPLIS Documentation

SIMPLIS Documentation Overview

SIMPLIS is the most widely-used tool for the design of closed-loop switching power supplies and lies at the heart of the SIMetrix/SIMPLIS simulation environment.

This set of SIMPLIS documentation includes tutorials, training materials, and syntax references. A large portion of this documentation is available as a web-help package that allows you to benefit from the web search functionality. Some of this documentation is intended for the novice as well as the more experienced user. Some of this web-help package provides information that may not be present in the free, introductory versions of the product or in the particular feature-set available in the packaged product.

SIMPLIS Tutorial

The SIMPLIS Tutorial is designed for those who want a step-by-step walk-through of the entire process of drawing a schematic, setting up analyses, and examining the waveform output of a simulation. The examples used in the SIMPLIS Tutorial are designed to be run on SIMetrix/SIMPLIS Intro, the introductory version of SIMetrix/SIMPLIS. To download SIMetrix/SIMPLIS Intro, click here.

The tutorial is centered around a Buck DC/DC converter and guides you through the following:

For each major step, you can download a schematic example to use in checking your progress against a known-good reference.

What is SIMPLIS?

The "What is SIMPLIS?" overview provides both a technical and philosophical explanation of the advantages of using piece-wise linear (PWL) simulation, in general, and of using SIMPLIS, in particular.

Intended for those new to SIMPLIS but potentially familiar with SPICE, this document presents the case for using the PWL approximations of nonlinear system equations to generate both fast and accurate simulation results for complex topologies for which SPICE is not viable.

Also included is an explanation of the Periodic Operating Point (POP) analysis, its value in power-supply simulation, and the benefits of POP as the starting point for an AC analysis that can yield a Bode plot from a full time-domain switching model.

Advanced SIMPLIS Training

The Advanced SIMPLIS Training picks up where the SIMPLIS Tutorial leaves off, and delves into the features and support functions of the simulator, the waveform viewer, and the model library.

This training guides you through the following:

SIMPLIS Parts

The SIMPLIS Parts documentation contains information on some of the unique and flexible models that SIMPLIS supports, including PWL passive devices, semiconductors, and digital devices.

This section focuses on how and when to use parts from within the SIMetrix/SIMPLIS user interface. These topics also cover the importation and use of SPICE models in the SIMPLIS simulator, a feature which is supported for some device types.

Additional technical details on the specific input file syntax are available in the SIMPLIS Simulator Reference Manual that accompanies the product.

Design Verification Module (DVM) and DVM Tutorial

The Design Verification Module, one of the extensions to the base product, is an indispensable tool for those who want to perform large numbers of simulations with minimal supervision. The DVM documentation and the tutorial cover the basics of DVM, what it is, how it works, and what it can do.

The tutorial provides a step-by-step walk through of the following:

The DVM documentation provides general reference information and documentation of the DVM symbols, models, and the testplan syntax.

DVM Reports

This section contains DVM report examples taken from the DVM Tutorial. These reports cover most of the following DVM operations:

Note: To reduce the size of these reports on disk, the graph files, which contain the raw simulation data, have been removed from some of the reports. You will see a pop-up message when you click on these hyperlinks. Otherwise, the reports are exactly what is generated by DVM after running one of the DVM tutorial examples.

SystemDesigner

For engineers working on digital designs in SIMPLIS, the SystemDesigner tools provide a set of schematic building blocks optimized to model digitally controlled power electronics, including both hardware and software digital-control implementations.

The documentation covers the special components, the dialogs, and the bus and clock definitions that are unique to SystemDesigner.

A tutorial is also provided to guide you from schematic creation through simulations, using both the signed-integer and double-precision floating point sampled data type modes.

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