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An improved design of a dc-dc converter using an integrated magnetic component

This paper presents a detailed analysis of an integrated magnetic structure. A generalized analytical designing formula of an integrated magnetic component is introduced. An improved numerical method is applied to estimate the proximity losses due to currents waveforms in an integrated magnetic half-bridge dc/dc converter, which are not sinusoidal. This method is based on the homogenizing of the electric conductors with a complex permeability. This improved method of homogenizing Litz wires is applied to an integrated structure using finite elements software. Computer simulation results are presented for 1 kW, 48-V integrated current-doubler rectifier. A prototype has been implemented and tested. Experimental results confirm the theoretical study and simulation