1.2kW dual-active bridge converter using SiC power MOSFETs and planar magnetics

This paper proposes the development of a compact high frequency bi-directional dc-dc converter, particularly designed for the case of future avionic applications, where one DC power bus at 270V needs to be interconnected with a 28V one. The selection of the topology (dual active bridge) in comparison with other isolated high step down topologies is presented with state-of-the-art power device technology. The topology is implemented with new semiconductor device technology to maximize the switching frequency and deliver a solution with contained volume and weight. Planar magnetic are employed to further optimize the converter shape. An experimental evaluation and detailed loss separation based on simulation study are presented.