EMC基本原理及PCB设计

EMCPCBEMC172.7.4EMCPCB............................................172.7.3......................................................172.7.2PCB.............................................162.7.1..............................................................162.7PCBEMC..............................................................162.6.4PCB....................................................162.6.3..........................................................162.6.2PCB......................................................162.6.1PCB................................................162.6PCBEMC..............................................................152.4.5.2..........................................142.4.5.1..................................................142.4.5....................................................................142.4.4......................................................142.4.3......................................................132.4.2......................................................102.4.1.2EMI......................................................92.4.1.1.....................................................92.4.1.................................................................82.4...........................................................82.3.......................................................................62.2EMC..................................................................62.1.2PCBEMCEMC.................................42.1.1PCBEMC.................................................42.1PCBEMCEMC.........................................42PCBEMC.................................................................41.4.2EMC.................................................................31.4.1EMC...............................................................31.4EMC.............................................................21.3EMC...........................................................21.2EMC.........................................................21.1EMC..................................................................21EMC....................................................................EMCPCBEMC2004-06-182181EMC1.1EMCElectromagneticCompatibilityEMC)EMCEMC(Electromagneticcompatibility)EMI(Electromagneticinterference)EMS(ElectromagneticSusceptibility)RERadiatedemissionCEConductedemissionCSConductedSusceptibilityRSRadiatedSusceptibilityESD(Electrostaticdischarge)EFT/B(Electricalfasttransientburst)Surge1.2EMC123CECEEMCCDMAGSM1.3EMCEMC12EMCEMIEMSEMIEMCPCBEMC2004-06-18318EMS1.4EMC1.4.1EMCEMC123A0A1A2RF110KHz-30MHzLC2EMCPCBEMC2004-06-1841830MHz-1GHzEMIPCBI/OEMCEMI1.4.2EMCEMC123PCBRFPCBEMI3WI/OEMCPCBEMC2PCBEMC2.1PCBEMC2.1.1PCBEMCAEMCCEEMCEMCEMCPCBEMC2004-06-18518BEMCEMCPCBEMCEMCEMCEMCEMCCEMCEMCDPCBEMCEMCEMCREEMCEMC5083200024280001EMCPCBEMC2004-06-18618EMC20002.1.2PCBEMCEMCPCBEMCEMCEMIEMCEMCEMCEMCEMCEMCPCBEMCEMC2.2EMCEMC[blackmagic]EMCEMC()()[EMI]EMCEMCPCBEMC2004-06-18718PCBPCBPCB(EMI)PCBRFEMCPCBEMC2004-06-188182.3A.B.C.D.E.PCBSGSPSGPSGSGS64212SGSGSPGSGSGS65112SGSSPGSSGS63110SGPSGPSSGS53210SPSGPSGS4228SGSPGSGS4318SPSSGS4116SGPSGS3216SPGS2114121110987654321:A.B.C.D.EMCPCBEMC2004-06-189182.42.4.12.4.1.150-----EMC121240dBEMCPCBEMC2004-06-181018ZsZLa(b)(c)(d)(e)(f)50502.4.1.2EMIEMIEMIEMIEMI1.TEMCPCBEMC2004-06-181118MURATATDK122.EMI1GHz3EMCPCBEMC2004-06-1812184EMI3.EMCPCBEMC2004-06-181318AC/DC4.EMIEMIEMIEMIEMIXY2.4.2DC/DCEMCPCBEMC2004-06-181418PCBAB50MILCCASECASECASED50MILE-48VBGNDF-48V/BGNDDC/DC-48V/BGND/PGNDGVCCDC/DC2.4.3LCDC/DCAB2.4.4A14BULKBCIC2.4.52.4.5.1EMCPCBEMC2004-06-181518ABCIC1IC2IC3ABCIC1IC2IC3ABCIC1IC2IC3ABCIC1IC2IC3CCCRLRRLL10MHZPCBPCBIC2.4.5.2BGND-48V24VPGNDGNDDGNDDGNDICEMCPCBEMC2004-06-181618AGNDIC2.6PCBEMC2.6.1PCB1)2)PCB3)4)5)1000mil2.6.2PCBPCB6)7)8)9)BOTTOM10)E1/T111)E1/T12.6.312)1000mil13)1000mil14)1000mil15)LC16)2.6.4PCB17)1000mil18)19)20)1000mil21)22)A/DD/A23)2.7PCBEMC2.7.1AEMCPCBEMC2004-06-181718BCLLL()G−GG−PP−PD2.7.2PCBPCB1)100mil2)3)3W4)1000mil5)3m6)PGNDPGND7)PGND8)9)2.7.310)500mil200mil11)TOP12)13)3W14)3W15)16)I/O1000mil17)1000mil18)500mil2.7.4EMCPCB19)20)500mil21)/22)/23)1000mil24)3012EMCPCBEMC2004-06-181818