高速PCB电源完整性

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,,(400030):,,CadenceSQPI,PCB,(PDS),,PCB:;;;:TN86:A:10042373X(2009)242213206AnalysisofPowerIntegrityforHigh2speedPCBSHENWei,TANGWanming,WANGYang(CollegeofComputerScience,ChongqingUniversity,Chongqing,400030,China)Abstract:Withthedevelopmentofmicro-electronicstechnology,theriseedgeofhigh2speedsignalismorefast.Powerin2tegrityhasbecomeanproblemwhichcannotbeneglectedindesignofhighspeedinterconnectionsystem.Itcanguideandopti2mizethedesignofPowerDistributionSystem(PDS)byusingSQPIsimulationsoftwareofCadenceCompany,andanalysepow2erintegrityonhigh2speedPCB.Anditcangivesolutionforpowerintegrityinthedesignphase.Basedontheprincipleandin2fluencefactorsofpowerintegration,thesolutionforhigh2speedPCBpowerintegrationisstudied.ThisisvaluabletoguidethePDSdesign.Keywords:powerintegrity;porverdistributionsystem;SSN;bypasscapacitor:2009205216,PCB,,,,,1(PDS)(1),,,,,,(SSN),,,iSSN(GroundBounce);SSN(PowerBounce),SSN12(a),,;2(b),,2312200924311þü©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(a),,;3(b),,,32PDS,:Ztarget=VSupplyVRTIDynamic:VSupply;VRT;IDynamicPDS(Fknee=0.5/Tr),,FkneePCB,,23(VRM)PCB,DCDCVRM,444,Vin,S1,L1L1,S1,S2,,,S1,S2A,,,PDS,VRMSQPIVRMSPICE5,RoutVRM,LoutVRM,RflatVRM,LslewVRM,,VRM,VRMti,:Lslew=Vdtdi=(VSupplyVRT)dtdi4,,ESRESL,,RLC,,,65VRMSPICE6,775SSN5.1SSN(SSO),,SSN,:VSSN=mn=1Lloopn(din/dtn):m;Lloopn;in;tn412:PCB©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,,,,,SSN5.2SSNCMOS,PMOSNMOS,888,VCC,LP,LG,Ccomp,,LpkgCpkg,,,,,999,LSP,LSG,IP,IGUIN=0V,TN,TP,Uout=VCC;Uin=VCC,TN,TP,Uout=0VSSN0VVCC,/10,UTPUTNTPTN,,,11,IPMOSID,,,VP;,,IG,,VG10115.3SSN,LSP,:VSSN2PB=(LP+LSP)didt,,LSG,:VSSN2GB=(LG+LSG)didt,SSN:VSSN=(LP+LG-2LPG)didt+(LSP+LSG-2LSPSG)didt:LPG;LSPSGSSN,,PCB,SSN:(1),;512200924311þü©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2),,,,(),(3),,(4)CMOS,,A66.1,,SSN,,,1212,,ESRESLRPCdaRdaRP,,,RPGRC,,1313ESRESL,RLC,:Z=R2+[2fL-1/(2fC)]2,f0=1/(2LC),,f0,ESR1414Q:Q=0(L/R)=2f0(ESL/ESR)=(1/ESR)ESL/C,Q,,,,,,,,Q,,CESL,1515,PCB,ESR,,,ESL,,,100ESRESL,,N,NC,ESL/N,ESR/N,,,16,,,,,LC,LC,LC,,,L,C,L,C,L,C,,612:PCB©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=0,,ESR,ESR,1818,ESR,ESR,ESR,,,,,1918ESR196.2PCB,PCB20,,,;,,2120217PCB,,()(),PCB,SpecctraQuestPI,,,PCBPCB,PI,,SQPI,PDS,,PDS,100MHz,1ns,500MHz,CAP_X7R_0603_1NF,CAP_X7R_0603_100NF,CAP_X7R_0603_10UF,11,1,1,2222PI(Allegro)22,PDS,,PDS,,PDS,,CAP_X7R_0603_10NFCAP_X7R_0603_100PF,:40100pF,181nF,610nF,2100nF210F,23,PDS,,,,PCBL1/6,,L/12712200924311þü©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,1ns,:l=Tr/D=11/5.6=5.6inch466mil23(Allegro)VRM,2424(Allegro)24,0500MHz,,,PCB,PCB,,;,,8PCB,,PDSPCBPIPIPI,PDS,PIPI,PCBPDS,,,,PDS[1]EricBogatin.[M].:,2005.[2].CadencePCB[M].:,2005.[3]HowardJonson.[M].:,2006.[4].PCB[M].:,2008.[5]ClaytonRPaul.[M].:,2006.[6],.[M].:,1996.[7],,.[M].:,2003.[8],.PCB[M].:,2004.[9]DouglBrooks.[M].:,2005.[10]StephenHHall,GarrettWHall,JamesAMcCall.[M].:,2005.,,,,()029-85393376812:PCB