Transcription of Five Steps to a Good PCB Layout of the Boost …
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1 SLVA773 May 2016 SubmitDocumentationFeedbackCopyright 2016,TexasInstrumentsIncorporatedFive Stepsto a GoodPCBL ayoutof a BoostConverterUser's GuideSLVA773 May 2016 FiveStepstoa GoodPCBL ayoutofa BoostConverterA goodPCBlayoutis criticalfor the reasonis that the boostconverteris sensitivetoparasiticcapacitanceand inductancebecauseof the bad PCBlayoutwouldintroducelargeparasiticcap acitanceand inductance,whichwouldcausehighoutputripp le,pooroutputvoltageregulationand currentlimit accuracy,electromagneticinterference(EMI )problem,and evenfailureby the helpto avoidmostof theseproblemsof the boostconverterwithoutextracost if thoughtis spentbeforethe first PCBis layoutof the boostconverterfromits datasheetor evaluationmodule(EVM)is easiest,butthe layoutmay not fit the this applicationnotedetailsfive stepsthat help to designagoodPCBlayoutfor the high-currentboostconverter,TPS61236as showninFigure1 is takenas the exampleto demonstratethe five May 2016 SubmitDocumentationFeedbackCopyright 2016,TexasInstrumentsIncorporatedFive Stepsto a GoodPCBL ayoutof a Routethe OutputCapacitorThe outputcapacitorlocationis the mostimportantfor any boostconverter,so it shouldbe placedcloseto the IC.
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