Integration of passive elements leads to a reduction in the volume of power converters. In case of resonant converters, the resonant inductor is often integrated with the transformer. This work builds upon the idea of integrating the resonant capacitor into the magnetic components by using modified litz wires. By arranging the individual strands in a litz wire into two groups, the parasitic capacitance across these strands can be utilized as a capacitor in the converter design. This paper shows the feasibility of using the integrated structures in kilowatt-level resonant converters and provides a simpler method of modelling the litz wire capacitance. Additionally, this paper presents design considerations for choosing the litz wire and its integration into the magnetic components for given resonant converter parameters.
