SIMPLIS Technologies Announces the Release of SIMetrix/SIMPLIS 9.1

SIMPLIS Technologies is pleased to announce that we have released version 9.1 of SIMetrix/SIMPLIS.  The major changes and enhancements can be found here.

what's new header

Waveform Viewer Features

Independent X-Axis for Fixed Probes

It is now possible to force graph curves created by a fixed probe to have a separate X-axis, allowing independent zoom. Previously this could only be defined as a manual operation once the curve was plotted.

Independent X-Axis
Simulator: SIMetrix and SIMPLIS
Required Version: All Versions

Schematic Editor Features

LTspice® Compatibility

The schematic editor can now open LTspice® schematics directly; just open the file in the normal way. If all models used are supported by the SIMetrix simulator, a simulation on the schematic can be run with only minimal changes required.

LTSpice Schematic
Simulator: SIMetrix
Required Version: All versions

Design Verification Module Features

Testplan Editor

Testplans can now be created and edited using the built-in Testplan Editor. Along with removing the need for third-party spreadsheet or text editor software, the built-in Testplan Editor also provides assistance with various cell inputs. This includes drop-down selection lists and argument entry assistance.

In addition to cell entry assistance, the Testplan Editor also provides real-time error checking. Hover over colored cells to receive further information.

Testplan Editor
Simulator: SIMetrix and SIMPLIS
Required Version: All versions with DVM addon

Testplan Wizards

Dynamically create a DVM tesplan to include only desired Objectives and inputs.

Three Wizards are available:

Testplan Wizard
Simulator: SIMetrix and SIMPLIS
Required Version: All versions with DVM addon

New Features for the SIMPLIS Simulator

New core materials in MDM database

87 soft power magnetic materials have been added to MagDB. Their properties can be viewed in the MagDB window, and they can be selected for use in the Core tab of the main MDM window.

MDM Core Materials
Simulator: SIMPLIS
Required Version: All versions with MDM addon

User-Defined Analytic Equation for Core Losses

When adding a new core material to MDM’s database or modifying an existing material in it, users can now define a custom equation for calculating core losses. To do so, open MagDB, select a core material from the list, and click on the “Analytic Equations” button, which will bring up the Analytic Core Loss Equation Editor.

The equation is assumed to model core losses due to sinusoidal flux excitation, to output losses in W/m³, and takes as its input the frequency (in Hz), peak flux density (in T), temperature (in °C), and DC bias (in A/m). The user may write, using JavaScript, an arbitrary expression, utilizing some or all of the input parameters, that calculates volumetric core losses for the material. Some core material manufacturers provide such equations in their data sheets.

MDM core loss equation
Simulator: SIMPLIS
Required Version: All versions with MDM addon

New Features for the SIMetrix Simulator

Perfect Devices

Two new simulation models with perfect characteristics have been developed:

  1. Perfect diode with zero forward resistance and zero reverse current
  2. Perfect switch with zero ON resistance and infinite OFF resistance
Perfect Diode
Simulator: SIMetrix
Required Version: All versions

Improved s and y Parameter Support

The AC table feature that implements s and y parameters has been improved:

  1. s-parameter models may now have any number of ports. Previously only 1-port and 2-port devices were supported
  2. The schematic support has been improved with a symbol generation feature. A symbol with the required number of connections can automatically be generated given the Touchstone filename extension


Four Port S-Parameters
Simulator: SIMetrix
Required Version: All versions

Verilog-A Run-time Debugging Using Microsoft® Visual Studio®

Verilog-A code can now be debugged in real time using Microsoft® Visual Studio®. Visual Studio Community, Professional and Enterprise editions are supported for versions 2012 to 2022.

Instead of debugging the actual Verilog-A code itself, the 'C' code generated by the Verilog-A compiler is opened in the Visual Studio debugger. The debugger allows program flow to be followed as well as being able to view values of variables.

Simulator: SIMetrix
Required Version: Pro and Elite

How to get version 9.10

For those interested in evaluating SIMetrix/SIMPLIS 9.10, please head to the Evaluation page and follow the directions to obtain a trial license.

For those who are up to date on their maintenance, the installer can be downloaded by clicking the button above. If you do not possess the credentials for downloading the new version, please contact us at