多路输出单端反激式开关电源设计

(100022):TOPSwitch,AC/DC,,,:;;;;AC/DC:TN702:B:1004-373X(2007)06-023-04DesignofPowerSupplyofMulti-terminalExportandReverseExcitationAC/DCModuleYANGLijie(CollegeofElectronic&ControlEngineering,BeijingUniversityofTechnology,Beijing,100022,China)Abstract:Thepaperintroducestheprincipleofreverseexcitationcircuitappliedforswitchingpowersupply.Andthede2signideaispresentedforthepowersupplyof10Wmulti-terminalexportAC/DCmoduleforintelligentinstrument.There2verseexcitationcircuitisappliedforthepowercircuit.Wegetstaticoutputsbyusingthemethodsoffeedbackandpulse-widthmodulation.Atlast,weshowtheresultoftheexperiment.Thispowersupplyfeaturesexcellentperformance.Keywords:switchingpowersupply;reverseexcitationcircuit;highfrequencytransformer;pulse-widthmodulation;AC/DC:2006-07-27,,,,PWM,TOPSwithAC/DC1,10WPCB,PCB10W,:,()(TL431)(),::10W;:85265V;:+5V,500mA;+12V,150mA;+24V,100mA;:120mV2TOPSwitch--DMOSFET,,MOSFET,,100kHz,,TOPSwitch3TOPSwitch-TOPSwitch-10,//3,1,TO-220,,3220076245þü7800DIP28SMD288,3DIP288IC,SMD28,1TOPSwitch(D)MOSFET,,,(C),,,(S)MOSFET,MOSFET,5.7V,9V,100mA,135,,.Vc,Vc4.75.7V,,Vc3.3V,,MOSFETTOPSwitch-,,,,1,,10W,TOP222G424.1,C1,L1,C2,,C5,,YC1C5,C1,X1TOPSwitchTO-220(Y)DIP-8(P)SMD-8(G)TOP221Y127TOP221P/G96TOP222Y2515TOP222P/G1510TOP223Y5030TOP223P/G2515TOP224Y7545TOP224P/G30202,UImA275VVSRMOSFET,UL,UOR,,UImax=380V,ULl165V,UOR=135V,UOR+UL+UORl680VMOSFET700V,,,TOP222GMOSFETD2,D3D2(TVS)P6KE200,D3UF4005MOSFET,,,D3,MOSFET,,,D1,200V4.2+5V,42:UF5401100V/3AD7,+5V,LC,L23.3,D7,R3,R4,4.3PC817TL431U2TL431,,R5,R6R5,R6C8TL431,TL431C7,C7=22F4ms,TOP222G10ms,14msU3PC817,(CTR)80%160%,,4N25,4N26,D4,C9,+12V,PC817,D41N4148PC817+5V,TOP222G,C3,C3=47F,1.2Hz,0.83s,,R2PC817LED,R2,:IFICDUO,UOUO,R5,R6,TL431UK,PC817LEDIF,ICD,UO,UO:UOUKIFICDUOUO,4.4,4.4.1[2],PO=10W,EE,,EE22,A=22mmSJ=0.41cm2,L=3.96cm,AL=2.4H/2,b=8.43mm4.4.2Dmax:Dmax=UORUOR+UImin-UDS(ON)100%(1):UOR=135V,UImin=90V,MOSFET-UDS(ON)=10V,:Dmax=64.3%,67%Dmax4.4.3(A)IAVG:IAVG=POUImin=100.890l0.14(2)IP:IP=IAVG(1-0.5KRP)Dmax(3)KRPIRIP,,0.9Dmax=64.3%,IP=0.518A4.4.4LPLP=106POI2PKRP(1-KRP2)fZ(1-)+(4),Z=0.5,IP=0.518A,KRP=0.4,PO=10W:LPl1265H4.4.5NP:NP=LPIP106SJBM(5),SJ=0.41cm2,BM=60,IP=0.518A,LPl1265HNP=26.6,30,5V12V,24V5V,12V,,,,,5V12V24V,5V12V,24V,5220076245þü,12V,24V,5Vn0:n0=NSUO1+UF1(6)/VNS5,UO1=5V,UF1=0.4V()n0=0.925/V24V,UO2=24V,UF2=0.4V,NS2=0.925/V(24V+0.4V)=22.57,2212V,UO3=12V,UF2=0.4V,NS2=0.925/V(12V+0.4V)=11.47,11,UF=12V,UF3=0.7V(),NS2=0.925/V(12V+0.4V)=11.47,114.4.6d,bM,bE(mm):bE=d(b-2M)(7)d=2,b=8.43mm,M=0:bE=16.86mm()DPM:DPM=bE/NP(8)bE=16.86mm,NP=78DPM=0.31mm,,DPM=0.26mm0.26mm0.28mm,0.26mm,0.25mm,,,4.52,u=85245V,UO1=5V(65)SV=0.2%,67mV;UO2=24V(250),98mV;UO3=12V(100),84mV,,UO1700mA,UO2120mA,UO3170mA,8.4W,2U/V85100120150180200220245UO1/V4.994.995.005.005.015.015.015.01UO2/V23.9423.9724.0124.0324.0624.0824.1124.14UO3/V11.9812.0012.0312.0712.1112.1412.1512.185,,,,,[1],.[M].:,2003.[2].[M].:,2004.[3],.[M].:,2003.[4],.[M].:,2005.[5],.[M].:,2001.(),200320042005,,180();2006260():::158B1606:611301074018000794620:710061::[phone]:[phone]:faxing@xddz1com1cn:62: