谈谈我做反激式开关电源变压器的一些经验

D85V265V5V2A100KHZVORI=Vs*ton/L,=VOR*toff/L,VS*TON/L=VOR*TOFF/L,OOFD=VOR/VOR+VS80VVS90VD=80/*80+90=0.47,.,,,.,,,,.,,,,,,.,=/*VSKRPKRP01KRP*1*KRP*D+*1-KRP*D=/1-0.5KRP*D10W0.8.10/0.8*90=0.138A,KRP0.6=0.138/(1-0.5KRP).D=0.138/(1-0.5*0.6)*0.47=0.419A.,,,,,,.,.,,KRP,,D,..,,,.=*D*(KRP/3-KRP+1),=0.419*0.47*(0.36/3-0.6+1)=0.20A.,,,,,,..,.100KHZ10,0.47.TON4.7.,.,,,,,,,,,..,,.,B,,,,,,NP=VS*TON/SJ*B,,,,,,B0.10.2,,,.,,,,,=/T,,.NP=90*4.7/32*0.15,880.15.,,,,,,,.,,0.25,0.25,0.049,0.2,4.08,,410.,.,,,.,,.,,,,5V,,5.6V,80V,5.6V,,.=NS*(UO+UF)/VOR,UF.88*5.6/80,6.16,6.,,,,,,.1-D,D,,KRP,,,,.,,,,TOP5.79V,7,6V,,,,,,,,,.,.I=VS*TON/L.,I:*KRP,L=VS.TON/*KRP,,.,,,BMAX=L*IP/SJ*NP.,,,,L,L=/,,,,,,.BMAX0.3T,,,,,.:,,,D,VOR,,KRP,,B,,,.,,.D=VOR/(VOR+VS)(1)IAVE=P/*VS(2)IP=IAVE/(1-0.5KRP)*D(3)I=*D*(KRP/3-KRP+1)(4)NP=VS*TON/SJ*B(5)NS=NP*(VO+VF)/VOR(6)L=VS.TON/IP.KRP(7)BMAX=L*IP/SJ.NP(8)