标签: 回扫

如何处理回扫转换器中的漏电元件AN1679/DHowtodealwithLeakageElementsinFlybackConvertersPreparedby:ChristopheBassoONSemiconductorIntroductionhttp://onsemi.comAPPLICATIONNOTESeveralwaysexisttodepicthowthemagneticvariablesareorganizedwithinthetransformer.Thereluctancemethodkeepstheanalogywithourelectriccircuitsandthereforeappearseasiertousnonmagneticexperts.Rememberthattheelectricalresistanceofametallicpiecetendstobrakethecurrentflow.Thatistosay,weimposeacurrentvariationdI(Amps)throughtheresistanceR(W)ofthemetallicpartbyapplyingavoltagevariationdV(Volts)acrossit,ordl+dVRItisdifficulttofindagoodtradeoffbetweencostandperformancewhendesigningofflineFlybackpowersupplies.Thebasicproblemisthepresenceofth……