ThermaSim™ Thermal Simulation Tool
Vishay's new ThermaSim™ is a free tool that helps you speed time to market by allowing detailed thermal simulations of Vishay Siliconix power MOSFETs to be performed before prototyping. Applicable to any power MOSFET application, ThermaSim will be especially useful in high-current, high-temperature applications such as automotive, fixed telecom, desktop and laptop computers, and industrial systems.

In order to use ThermaSim, you must first register on the Vishay Website. If you want to register, or if you have already registered and want to use ThermaSim, click here.

More About ThermaSim
In a first for on-line MOSFET simulation, ThermaSim™ uses structurally detailed models of Vishay Siliconix power MOSFETs created using finite element analysis (FEA) techniques to increase the simulation's accuracy. The tool also allows you to define other heat-dissipating components and simulate their effect on the MOSFET's thermal operation. Simulating these components ensures optimum device selection for application specifications.

The tool is rich in features and the set-up is comprehensive. Use ThermaSim to construct the PCB size, layers, material, and copper spreading; set pad size and solder quality; define the heat sink size, material, and attachment methodology; select the power dissipation profile, system temperature, air flow, and assembly orientation with respect to gravity to correctly account for the effect of convection. You also have a choice between steady-state and transient simulation.

Simulation results are emailed to you directly and can be downloaded into Microsoft® Excel®. Multiple results with varying product, package, or other input data can be merged within Microsoft® Excel® to compare and examine trends. Thermal images are provided, and an MPEG video clip of the thermal image with transient simulation is also available. Simulations can be saved for modifications at a later date.

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