Topology Selection

When designing an electronic circuit, especially power system circuits, it is necessary to select a circuit configuration (topology) that meets the required specifications because input voltage, output voltage, power, isolation, etc. vary depending on the application. The selection of the most suitable components also differs depending on the topology. If the wrong components are selected, the required specifications cannot be met and the circuit design must be redone. The topology selection page provided by ROHM guides you through the selection of the best device for different topologies.

• Topology Selection – UPS

Reference Designs

We provide solution boards that solve various customer problems by combining ROHM ICs and discrete products. System-level evaluation results and design data as reference designs are also offered to help customers reduce development load.

Design Models

Various simulation models for circuit and thermal simulations of power devices and ICs can be downloaded from individual product pages or the following links.

Common to All Products

・SPICE

Discretes only

(power devices, MOSFETs, transistors, diodes, etc.)
・LTspice
・Thermal
・PLECS

ICs only

(op amps, power management ICs, power supply ICs, etc.)
・ Unencrypted SPICE (downloadable from each product page)
This is an unencrypted version of PSPICE, a SPICE model that can be imported into any simulator.

ROHM Solution Simulator

ROHM Solution Simulator is a new web-based electronic circuit simulation tool that allows a variety of simulations to be carried out, from initial development that includes component selection and individual device verification to the system-level verification stage. This makes it possible to quickly and easily implement batch verification of ROHM power devices (i.e. SiC) and ICs (e.g. driver and power supply ICs), in simulation circuits under close to actual conditions, significantly reducing application development load.
*MyROHM registration required

• ROHM Solution Simulator