标签: cv02-04-pcb

CV02-04-PCBDesignGuidelinesforEMI&ESDSuppressionCITRUSCOMCV02-04ESD+EMIFilterApplicationNotePCBDesignGuidelinesforEMI&ESDSuppressionPCBPlacementEMI&ESDPlacementConsiderationsGoodplacementinPCBdesignisveryimportantforsuppressionofEMI&ESDhazards.Ingeneral,ESDprotectiondevicesshouldbeplacedneartheI/Oconnectorsandtheprotectedlines.ThelengthofPCBmetaltracesconnectingESDdevices,ICsandI/OconnectorsisakeyfactorfortheESDprotectionofprotectedIConPCB.WhenasurgecurrentofESDstrikecomes,thepathimpedancedetermineshowmuchcurrentthepathwouldshuntincasethattheESDprotectiondevicesandon-chipprotectioncircuitshavethesametriggervoltage.Ashortertracelengthequatestosmallerimpedance,whichensuresmostthesurgeenergyshouldbedissipatedb……