Design and analysis of different structure of a coreless planar transformer for a flyback converter

In this paper the development of a 0.5 W DC/DC converter is presented. The special feature of the converter is that the flyback converter is laid out without a core on a PCB. The paper shows a way of the implementation of the coreless planar transformer. An analysis shows some results by different geometry and frequency of the planar transformer. This DC/DC converter is adjusted for special current sensors, which are developed in the research group. it will be shown different variants of a layout structure. The issue of the development is the realise a DC/Dc converter with a high isolation voltage.