SemiSel is the SEMIKRON online calculation and simulation tool for losses, temperatures and optimal choice of power electronic components. The days when a module was purchased solely on the basis of its nominal current are over. Today, increased product diversity in the field of power semiconductors calls for comparisons beyond the information contained in data sheets. Only a comparison under application-oriented conditions, such as voltage level, switching frequency or cooling conditions, can demonstrate differences in the performance of the devices available. Miniaturisation combined with higher power densities makes it essential to get information about device losses and temperatures to specify requirements for a cooling system in a early state of product development.
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Getting started with SemiSel
Number of parallel devices on the same heat sink
Number of switches per heat sink
The risk arising from variations in both component and electrical circuit parameters should be considered in proper circuit design. These facts are only a few of the many points that need to be considered when developing a power electronics system. And this is where efficient support is provided by SemiSel to enable developers to make the right decision. SemiSel is still the most comprehensive free tool of its kind that can be used to investigate different power electronic circuits under different operating conditions. This programme has been available online since 2001, and it has been continually improved and expanded since its introduction. It provides a good compromise of user-friendliness, applications and speed. The calculation functions range from product proposal for nominal operating conditions to drivers and heat sink specifications and product selections for specific overload conditions and complex calculations, such as complete load cycles that take into account temperature cycling problems.