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This paper presents circuit design techniques for reducing the effects of magnetic flux, occurred from the planar transformer, on gallium nitride high-electron-mobility transistors (GaN-HEMTs) in 5-MHz 100-W high power-density LLC resonant dc–dc converters. For investigating the effects of magnetic flux on a GaN-HEMT, power device model for finite element method (FEM) simulation is proposed. In order...
To achieve high power-density isolated dc-dc converter, gallium nitride high electron mobility transistors (GaN-HEMTs) and planar transformer have been used. Also, for the high power-density design, these components are placed close to each other. GaN-HEMTs are significantly affected by the leakage flux of the planar transformer, because of their lateral structure. Therefore, the mutual effects of...
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