Simulation and optimization tool for high-frequency planar transformers based on 1D analytical modeling

Abstract

For high frequency switch-mode power converters and supplies, planar transformers allow good performances to be reached. They suit very well to embedded power electronics applications, where size and weight matter. This paper presents a modeling, simulation, and sizing tool based on a 1D analytical model. This tool aims at helping designers describe, simulate, and know frequency behavior of planar wound components. As soon as all measurable impedances given as the tool outputs, device behavior becomes predictable. Due to its analytical nature, this tool is very fast and it can be driven by optimization software to reduce transformer losses and, finally, reduce cooling system weight.