Integration of Both EMI Filter and Boost Inductor for 1-kW PFC Converter

In order to increase the power density of the power factor correction converter, a novel integrated structure for both the electromagnetic interference (EMI) filter and the boost inductor is proposed with the flexible multilayer foil integration technique, which can reduce the volume of these passive components. Also, the performance of the proposed integrated structure is investigated based on the distributed electromagnetic component model. Furthermore, the design procedure for the integrated structure is detailed. Finally, a prototype of the integrated structure for both the EMI filter and the boost inductor has been built and the experiments demonstrate the validity of the integrated structure.