Winding　eddy　current　loss　mechanism　of　high-frequency　gapped　inductor　is　studied　deeply　by　two-dimensional　finite　element　analysis.　It　reveals　that　concentrated　distribution　of　the　magnetic　field　in　the　winding　window　due　to　the　air　gap　obviously　leads　to　higher　flux　strength　and　then　higher　winding　eddy　current　loss.　Based　on　the　analysis,　a　new　simple　inductor　structure　is　proposed　to　make　the　field　in　the　winding　window　more　uniform　by　introducing　a　low　permeability　magnetic　shunt　between　the　gapped　core　leg　and　the　winding,　resulting　in　a　significant　winding　loss　reduction.　Moreover,　field　analysis　and　design　for　the　new　structure　are　also　performed.　©　2005　IEEE.