No installation required, available for freeOnline simulator
ROHM provides two types of free online simulators. “ROHM Solution Simulator” accurately simulates a wide variety of circuits including circuit topologies, power supplies, and op-amps, and checks their characteristics.
“ROHM PLECS Simulator” is a design support tool that can evaluate the circuit topologies using power devices. It quickly evaluates the waveforms, losses, thermal behavior, etc. under varying circuit conditions by using the PLECS model, which reflects device characteristics.
Use the tool as necessary.
Comparison of tools
| Item | ROHM Solution Simulator | ROHM PLECS Simulator |
|---|---|---|
| Required simulation time | Slow Over 1 hour at max. |
Ultra-high speed Tens of seconds to a few minutes |
| Thermal calculation | Difficult (complex) | Available |
| Loss calculation | Complex Per-device/cycle individual calculation |
Easy (However, consider soft switching circuits separately as explained below.) |
| Waveform reproduction accuracy | High Surge, oscillations, etc. can be accurately reproduced. |
Low Basic operation only |
| Device models | Extensive Compatible with spice model |
Limited PLECS model required |
| Application | Detailed validation After the circuit design is mostly finalized |
Initial evaluation For identifying promising solutions by trial and error |
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.