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HT7963 Datasheet(PDF) 6 Page - Holtek Semiconductor Inc |
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HT7963 Datasheet(HTML) 6 Page - Holtek Semiconductor Inc |
6 / 11 page Rev. 1.00 6 August 14, 2015 HT7963 Layout Considerations Circuitboardlayoutisaveryimportantconsiderationforswitchingregulatorsiftheyaretofunctionproperly. Poorcircuitlayoutmayresultinrelatednoiseproblems.InordertominimiseEMIandswitchingnoise,the followingguidelinesshouldbeadheredto: • Alltracksshouldbeaswideaspossible • Theinputandoutputcapacitors,CINandCOUT,shouldbeplacedclosetotheVIN,VOUTandGNDpins • TheSchottkydiode,D1,andinductor,L,mustbeplacedclosetothepowerMOSFETdrain • Feedbackresistor,RFB,mustbeplacedclosetotheFBandGNDpins • AfullgroundplaneisalwayshelpfulforbetterEMIperformance ArecommendedPCBlayoutwithcomponentlocationsisshownbelow. 57mm Top Layer Bottom Layer |
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