Evaluation of power loss and mass gains of SiC versus Si-based switch-mode power supplies using a multiobjective optimization CAD tool

In this paper, the power losses and mass of multiobjective optimal designed isolated dc-dc converters are compared, based on Si and SiC technologies. To that end, a computer-aided design (CAD) tool, previously published by the authors, is used. The database of the existing tool is enriched with wide band gap semiconductor devices currently available from manufacturers. The results are presented for two switchmode power supplies operating at very different power levels. The gains in terms of power losses and mass from one technology to the other are quantified thanks to the CAD tool, which is an asset.