High-Performance Synchronous Resistance Compression Network-based Resonant DC-DC Converter Utilizing Matching Network

This paper introduces control and design methodology for high-efficiency synchronous resistance compression network (RCN) based resonant dc-dc converter utilizing matching network in its transformation stage. RCN converters typically comprise inverter, transformer, and differential reactances connected to two phase-shifted rectifiers at the output. Conventionally, these converters rely on a transformer to provide large gain across a wide load range. A generalized approach to develop phase-shift control methodology for a synchronous RCN converter that incorporates matching network to reduce the step-up requirement of its transformer is proposed. A systematic methodology is also presented to design and co-optimize the transformer and matching network efficiency across a wide load range. An example design which applies the proposed design methodology in a 300 W, 12-V input, 200-400-V output synchronous RCN dc-dc converter is also discussed.