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Free to use - no installation requiredOnline Simulators

Select from two online simulators to suit design needs

ROHM offers two types of online simulators with different features that enable optimal verification based on the application and stage of circuit design.

ROHM PLECS Simulator

Quickly and easily evaluate power device circuits in the early design stage

Fast validation
Evaluate loss and temperature
Ideal for comparing conditions

Using the ROHM PLECS Simulator

ROHM Solution Simulator

Recommended for detailed verification after finalizing circuit design

High Precision
Supports a wide range of circuits
Ideal for post-design verification

Using ROHM Solution Simulator

Choosing the right simulator

	Initial Design Get a rough understanding of trends in loss and heat generation Quickly test a variety of conditions	Detailed Design Verify detailed circuit behavior after finalizing the design Accurately simulate surge voltage, resonance, and other phenomena
Online Simulator Run immediately without setting up a simulation environment Easily evaluate performance using pre-built demo circuits
Downloadable Content Use your preferred simulation environment Freely customize circuit configurations and devices	PLECS^Ⓡ and PSIM Device Models PLECS^Ⓡ Demo Circuits	SPICE Models LTspice^Ⓡ Demo Circuits

Tool Comparison

Feature	ROHM PLECS Simulator	ROHM Solution Simulator
Calculation Speed	Ultra-high-speed A few seconds to a few minutes	Slow More than an hour (max.)
Heat Generation Calculation	Possible	Difficult (requires complex setup)
Loss Calculation	Easy	Time-consuming Separate calculations per device and cycle
Waveform Reproduction Accuracy	Low Limited to basic operation	High Accurately reproduces surges, oscillations, and the like
No. of Device Models	Limited Requires separate PLECS models	Extensive Compatible with existing SPICE models
Applications	Initial evaluation for comparing and assessing design conditions	Detailed verification after determining the circuit parameters.

Tool-specific models

Design Model

ROHM offers simulation models, including thermal models, PLECS models, and Ray files, for circuit and thermal simulations of discretes and ICs, including power devices.

Design Model

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