Optimization design of planar transformer in DC-DC converter

摘要

Planar transformer show great advantages compared with traditional transformer in DC-DC converter for its small size and low power dissipation. However, its performance might not be as effective as expected in high frequency and high current applications for the existence of high frequency effects. In this work, the high frequency effects are analyzed and detail optimization design methods for planar transformer winding with interleaved parallel winding arrangement method are introduced, which can help equal the current flowing in the winding and decrease copper loss. Finite Element Analysis (FEA) results are given to verify the design.