标签: an-1229

AN-1229SIMPLESWITCHERPCBLayoutGuidelinesSIMPLESWITCHERPCBLayoutGuidelinesIntroductionOneproblemwithwritinganApplicationNoteonPCBlayoutisthatthepeoplewhoreaditareusuallynottheoneswhoaregoingtouseit.Evenifthedesignerhasstruggledthroughelectromagneticfields,EMC,EMI,boardparasitics,transmissionlineeffects,grounding,etc.,hewillinallprobabilitythengoonwithhisprimarydesigntask,leavingthelayouttotheCAD/layoutperson.Unfortunately,especiallywhenitcomestoswitchingregulators,itisnotenoughtobeconcernedwithjustbasicrouting/connectivityandmechanicalissues.BoththedesignerandtheCADpersonneedtobeawarethatthedesignofaswitchingpowerconverterisonlyasgoodasitslayout.Whichprobablyexplainswhy……