高速PCB电源完整性研究

120062JournalofCAEITVol.1No.1Feb.2006PCB(,100084):(PCB),,.,/,:(PCB);;;;/;:0441:A:1673-5692(2006)01-022-09ResearchintoHighSpeedPCBPowerIntegrationBAITong2yun(DepartmentofEngineeringPhysicsTsinghuaUniversity,Beijing100084)AbstractAsuccessfulhigh-speedprintedcircuitboard(PCB)requiressignalintegrityandpowerintegrity,mustreducetheeffectsofgroundbounce.Tofiltergroundbouncenoise,recommendsplacingthedecouplingca2pacitorstoVccandgroundpair.Keywordshigh-speedprintedcircuitboard(PCB);signalintegrity;powerintegrity;groundbounce;Vccandgroundpair;decouplingcapacitor,,,PCB,,,,,,,,PCB,,PCB,,,,PCB/II,,,,,PCB400MHz,,;,,PCB,,,,,1:2005212216:2006202212©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,I;,,,,,,1,,;,11.1I(signalintegrity),I,(groundbounce),,01,,(TTL,CMOS),,,,I,I,,,I,,,,,II,,,,I,I241,,13Cs,2LI1,I=IP,L,12,II=IP=4mA,tr=2ns,L500nH,I:V=-Ldi/dt=500nH(4mA/2ns)=1V(1)2,4,4I,,I,I(1)I,,,(2)I,,(3),,,(4),,I,I,,I,ICMOSII.PCB3220061PCB©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2):IL=CsdV/dt(2),Cs,;dVdt,0.10.3pF/cm,0.31pF/cm3.5V,3ns,5cm,5,510-12F,:IL=(5cm0.3pF/cm+55pF)3.5V/3ns=30mAILI,I,,;IL,,IL,I,,IL,I,34,,,,3IlIIp(a)(b)4,I:LCsIV,dt,tr,,L,,;,I1.3I,,CMOS01,,I,,,I,,,,II,,I:I,I(1)42PCB20061©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,,CMOS,0.001F,(100),0.1F0.001F,,,IC:I=Cdv/dt(3)C=Idt/dv(pF)(4),II(A);dvVcc(V);dt/(ns):I=50mA,dv0.1V,dt=2ns:C=Idt/dv=50mA(2ns/0.1V)=1000pF(2),,C10(3),,,IVdd,,Vdd,,,I,,,,I(4),I,,If100MHz,nH,,,I,,f100MHz,IPCB,,,;,PCB,,,,1.4ICPCB,,,,PCB,,EMI(),EMI,PCB,ICEMI,ICIC,,,,,CMOS,ECL,TTL,EMIICPCB;PCBPCB,IC,BGA(),PCB,(EMI),PCB,,EMIICIC5220061PCB©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,5V,I100mA;3.3V,66mA;1.8V,36mAI,I,EMI,IC,,IC,EMII,EMI;IC,IC,tr,,EMI,,ICSMTBGA;PCBPCB;PCB();;;;;(LVDS);IC;IC;,,2PCB,,,,,,PCB/I,I.,,,,,,.55(a)(b)2.1,,,,20PCB,200mA,4A1.125,0.5V5V,4.5V,I,,PCB/,,;,I,,,PCB/,,EMI;,,EMI,EMI1ns,I,/,IC,,,I,,,62PCB20061©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,,,AnsoftSiwave2.2,IC(0.10.01m),/(10.1ns),IC,,,,,:,,,,665%,,,I,I,,ZmZm=()()I(5),,BWBW=1/tr(6)11990PCB,,,I,1PCB(m)(V)(W)(A)(m)19905.05125019933.31035419962.530121019991.890501.820021.21801500.4PCB,/,DC1kHz;1kHz1MHz1MHz;/100MHz,/,77/a.(VRM),8,Rout,Lout,Rflat,Lslew8b.,,7220061PCB©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(ESL)(ESR),9c./,/,/,,/,10,VRM/,,,11,12,RLGC9RLC10PCB(/)11/12/RLGC3SIWAVEAnsoftSIWAVE,,3.1/(),/,IC,3.2IC,,/;/,,,,3.3SYZICZ,Z,ESLESR,;82PCB20061©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(:ESLESRparral2lelskew);AC,R/L/C;,,,;Z;S3.4spicespicespice44.1PCB13xDSMPCB,/28cm18.3cm,0.036mm,0.61mm13xDSMPCB2GHz,0.54GHzPCB,,PCB,I,PCB,,PCB0.81GHz0.97GHz,PCB,,1.07GHz1.64GHz1.96GHz,,XinlixFPGAPCB,0.2ns,I2A,Vcc3.3V,5%,(5),Zm=3.3V5%/2A=82.5m(6):BW=1/tr=1/0.2ns1.60GHz,,kHzSiwave,IC,1MHz82.5m,2F,,220.1F,,,,,10nF1nF,,,1nF100F100nF4.2PowerIntegrity,14CadencePowerIntegrity,300mm200mm4PCBPCB10VRMLlewRflatLoutRout74nH30m4nH1mA,25MHz1026.4MHzESR68m,B,,25MHz0.1,60MHz58.2MHzESR94m,C60MHz0.1,/100.1,400MHz9220061PCB©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,5PCB,,,,PCB,,,;,,,PCB,,,11-11412004.2,1,,2001.3,11,1991J.L.Norman,DonaldR.J.White,MichaelF.Violette,ElectromagneticCompatibilityHand2book,VanNostrandReinholdcompany.41PCB1,HighSpeedPCBDesigns,HIGHSPEEDDE2SIGN,ANSOFTCORPORATION.,,1960,,,(NB)CCQS.UK.Ltd.CE,,,:,,2006110,(),,444,2006,,,4,,03PCB20061©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.