The Characterisation of High Frequency Planar Thick‐film Transformers

The results of an empirical investigation into the design and fabrication of high frequency planar thick‐film transformers for use in resonant mode power supplies are reported. A 50 W planar transformer design which realises efficiencies in excess of 90% is presented. The findings are used in order to establish an understanding between winding topologies and dimensions and the physical planar transformer parameters.