Bidirectional Interleaved Buck/Boost DC-DC Converter Design to Improve Power Density in High-Current Applications

Abstract

Interleaved topologies are popular in high-power, high-current applications due to the reduction in device current stresses and filter sizes. Despite its popularity, a proper design procedure for bidirectional interleaved dc-dc converter operating in CCM including the selection of appropriate number of phases and passive component design to optimize converter efficiency is missing in the literature. This paper presents a comprehensive design procedure for a bidirectional interleaved buck/boost dc-dc converters for high-current applications. Use of silicon carbide devices in the converter will further improve its efficiency and power density.