This talk will provide an overview of how to achieve a reduction of fringing losses in high frequency magnetics for resonant converters applications. By using ferrite toroidal cores with split gap in several smaller gaps, generating a multi-gap ferrite toroidal core, fringing losses can be reduced considerably achieving higher efficiency or magnetics size reduction. The goal is to show engineers practical examples of multigap toroidal transformers and resonant inductors designs, number of gaps and gap size optimization with finite elements analysis, wire selection to minimize losses and comparable results versus an E or PQ format design.
