Common-mode　conduction　EMI　is　a　key　consideration　in　switch-mode　power　supplies.　Copper　foil　electric　field　shielding　is　commonly　used　in　the　SMPS　to　shield　the　transformers　or　inductors　in　order　to　reduce　the　CM　conduction　interference.　However,　the　copper　foil　in　the　magnetic　components　not　only　shield　the　electric　field,　but　also　affect　the　magnetic　field　distributions　due　to　high-frequency　eddy　current　effects,　resulting　in　extra　eddy　current　losses　in　the　foil　and　the　change　of　magnetic　parameter　of　the　magnetic　components.　This　paper　analyzed　these　behaviors　with　copper　foil　shielding　and　proposed　the　new　shielding　scheme　which　has　good　electric　field　shielding　effect,　but　with　no　effect　on　the　magnetic　field.　The　new　shielding　media　used　comb-shaped　wire　array　to　form　the　shielding　sheet,　instead　of　traditional　complete　copper　foil.　With　the　new　shielding　sheet,　the　eddy　current　effect　due　to　AC　magnetic　field　can　be　avoided.　The　electric　field　shielding　behaviors　with　the　new　shielding　scheme　was　deeply　analyzed　with　different　wire　densities　and　compared　with　traditional　copper　foil　shielding.　Finally,　the　application　example　of　the　electric　shielding　for　LLC　transformer　was　demonstrated.　©　2011　IEEE.