Abstract

Reduction in size and weight of power supplies can be achieved by using switched mode or resonant concepts at increasing frequencies, which may even exceed 1 MHz nowadays. For magnetic components this requires new ferrite grades with increasingly severe demands on low magnetic and eddy current losses. A well-balanced series of MnZn and NiZn power ferrites has been developed for frequencies ranging from 10 kHz to 10 MHz. These materials are applied in highly efficient core assemblies with specially designed core shapes and windings.

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