Transcription of ESD Layout Guide - TI.com
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1 SLVA680 February2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedESDP rotectionLayoutGuideApplicationReportSLV A680 February2015 ESDP rotectionLayoutGuideGuy systemagainstelectrostaticdischarge(ESD) is largelydependenton the printedcircuitboard(PCB) propertransientvoltagesuppressor(TVS)fou ndsthe basisof an ESDprotectionstrategy,its scopeis not availableinTechnicalDocumentsat guidancein choosingthe correcttypeof TVSdiodefor properTVSselected,designinga PCBL ayoutthat leveragesthe strategiesoutlinedin this ESDL ayoutGuidewill providethe PCBdesignerwithan avenuetowardssuccessfullyprotectinga OptimizingDissipationof ESDeventrapidlyforcescurrent(seeFigure1) ,IESD, into a system,usuallythrougha userinterfacesuchas a cableconnection,or a humaninputdevicelike a key on a systemagainstESDusinga TVSreliesuponthe TVSbeingableto shuntIESDto PCBL ayoutfor ESDsuppressionis largelydependanton designingthe pathto groundforIESD with as littleimpedanceas ESDevent,the voltagepresentedto the protectedintegratedcircuit(ProtectedIC), VESD, is a fu
Protected Line ESD Source Protected IC L1 L2 L3 L4 PCB Layout Guidelines for Optimizing Dissipation of ESD www.ti.com 4 SLVA680–February 2015 Submit Documentation Feedback
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