The conventional approach to power inductor design for the applications of high-frequency power converters is to adopt gapped ferrite cores, while the air gap reluctance normally deteriorates the hysteresis loss. As a result of that, the power modules always suffer from the thermal and efficiency issues. In this session a novel hybrid PQ core design, as one of the examples, is demonstrated in use of ferrite P61 grade material and nanocrystalline powder cores which are specifically suitable for high-frequency applications. It leads to the further reduction on flux fringing effect and air-gap reluctance, which in turn benefits your power choke design.
