反激变换器辅助电源的设计

UC3842A190~265inVV40~60rfHz30outPW015VV=85%60sfkHz2133.11APAPAwAeAP1.14311.1****insputPAPfBKKKcm4PinB0.2TKp0.2~0.4Ku0.4~0.5Kt0.7~1.4**putKKKK0.1~0.21.1431.1434311.1*11.1*36=0.318cm****60*10*0.2*0.32*0.4*0.71insputPAPfBKKKAP0.318cm4TDKEI33/29/1341.5854cmAP2118.5mmeA2133.79mmwA230=0.27()*(min)0.85*127outavinPIAV(min)inV(min)90*21.0127inVVIp1Ip2max2(1)*avpkIIkD12ppIkIP40WK=0.5~0.6P40WK=0.35~0.45P40Wk0.4DCMDmax=0.4max22*0.270.96()(1)*(10.4)*0.4avpkIIAkD3max3(min)*127*0.40.882*10()*0.96*60*10inppkVDLHIf8*(min)*()(min)*10**ppkinonpeeLIVTmaxNABAB(min)inVV()onTmaxSB1000~2500AeEI33/29/13Ae=118mm2=1.18cm2688(min)*()127*0.4*16.7*10(min)*10*1045*1.18*1600inonpeVTmaxNABmaxmax()**(1)(151)*45*0.69(min)*127*0.4odpsinVVNDNVDNsNpDmaxVdNs=919169116fSoVNNV3J=500/A;2-36.6165.5dKffT=20f=60kHzT=2036.6165.50.267()60*10dKmmfd=0.38mm221()3.14*0.192*1000*1000224()0.50660.5066dSIpk=0.96Akmax0.35()3prmsIIDA11*n1()rmsIJS221*2*500n4()224rmsIJSIrms2=2A(1)(1)0.38mm4510.38mm940.38mm91EI33/29/13PC40EE336+63.290V0.96A250V2A3.3265V400V1.5~22~3KBP206600V2A3.4SR0.1uF/275VNitsuka1uF/630V30W1W/(1~2uF)100uF/450V3.50.96A500V13N50C500V13A3.6151/1/0.961pkRI1W12W0.5mA21.4V1.0V312-13.01.48.80.5VVRkmA312K3.72AFR3073A700V3.8LC1%0.15VI=2AESRESR2200uF/63VL=10uH,1uF/63V0.1uF/63V3.9RCDRCclampVclamp()maxV0.90.9500311139VBRDSSinVVDSSBRV)(500VmaxinV311Vclampclamp222(V)V2(13975)13916(K)()200.9660ORlkPsVRlIfukORVlklclampclampV1390.052()V0.021391660sCuFRfKKR2=10K/3WC401=0.1uF/600VFR307700V2A3.10(4)TIUC3842A16V1mA,2mA(min)1-1331612716R56K210210inVNpNfRlVinDCVCC(4)3.11(1)(5)TL4312.5VTL4312.5VTL431TL4312uAI1250uAR110_1=10KRp1=5KR17=2KI115/(17K)0.88mA,VKKV5.2178.215VoR13R14R15TL431I1(5)(2)(6)uc3842R171KR10R11TL431VFB2.5V(uc38422.5V)TL4312.5V1mAR10R11mA111105.2RVIRVVDFBDoVD(1V)IFB*R17VFBIFB1mAR101.5KR111KR10=470R11=1KC12RUPPER1/10~1/201.5KHz1KHzK1)*12*2/(1UPPERRCRUPPER=14.2KC1210nF(6)(3)TIUC3842ACTCT=4700PFSRWIMART=5.6KR7=5.6KC9=4700PF1.75sTTfCR66.5sfkHZ(4)45-20dB/decflyback(8)Gc(s)VceoGveo(s)H(s)+-VoVrefR14TL431PC817R15C12R11R10R17VFBVoVoR13RLOWERRUPPER(8)Gveo(s)H(s)UPPERLOWERLOWERSinPPsOinCEOOVEORRRsHRVLLfRVsVsVsG)()/())2/(()()()(uc3842110125.4110653/25.0127828226475.31271213/25.0127828226475.31271213/)/())2/(()()()(36ssuuKsCRsCRuuKsCRsCRRVLLfRVsVsVsGOOOESROOOESRSinPPsOinCEOOVEOfp=38Hz,fz=2.5KHz,GVEO(s)GVEO(s);GVEO(s)(9)111)()()(22121212sCRsCRsCRRRsVsVsGOCEOCR2C1C2R1VrefVOVCEO(9)uc3842PI((6))sCRsCRRRCTRsVsVsGUPPERUPPEROFBc121121017)()()(1CTRPC817CCTR=2~43sssCRsCRRRCTRsVsVsGUPPERUPPEROFBc6611014211014247.013121121017)()()(1BODE(10)fcfsfc1/101/20(9)f=1K~2.5K-20dB/decfc=1.5kHzuc3842PI(1)(9)uc38421(11)1841184)()()(2sCRRRsVsVsGFBCEOc100101102103104105-90-60-300Phase(deg)BodeDiagramGm=Inf,Pm=107deg(at157Hz)Frequency(Hz)-30-20-1001020System:gFrequency(Hz):1.52e+003Magnitude(dB):-18Magnitude(dB)(10)BODER4C8R18VrefVFBVCEO(11)uc3842R18=100Kfc1/210KHzC8=150PF1101501101421101424.6)()()()()(96621ssssVsVsGsGsGOCEOCCC100101102103104105106-180-135-90-450Phase(deg)BodeDiagramGm=Inf,Pm=78deg(at1.49e+003Hz)Frequency(Hz)-50050100System:untitled2Frequency(Hz):1.51e+003Magnitude(dB):-0.0286Magnitude(dB)(12)BODE(12);20dB/dec;78CommentDescriptionDesignatorFootprintLibRefQuantity104/1000VC31RAD0.3CAP1CapPol1PolarizedCapacitor(Radial)C32RB5.0/10CapPol110.1U/630VC33RAD0.4CAP11uF/630VC34RAD0.4CAP1100uF/450VC35RB10/22ELECTOR11CapCapacitorC36RAD-0.3Cap1CapCapacitorC37RAD-0.4Cap10.1U/275VC38,C39RAD0.4CAP2104C40RAD0.4CAP1CapPol1PolarizedCapacitor(Radial)C41RB2.0/5CapPol11104/275VC42MPF191408-104V400CAP1102C43RAD0.2CAP1104C44RAD0.2CAP1CapCapacitorC45RAD-0.2Cap11uFC46RAD0.4CAP1472C47RAD0.2CAP1FR207DefaultDiode,DiodeD9,D10DIODE0.4Diode2LED0TypicalINFRAREDGaAsLEDD11LEDLED01FR107DiodeD12DIODE0.4DIODE1DZenerZenerDiodeD13DIODE0.4DZener1250V/2AFuseF2Fuse21CON2J32CON21InductorInductorL3AXIAL0.7Inductor1TRANS1L4UU10.5TRANS11CommentHeader,2-PinP32Header21IRF840N-ChannelPowerMOSFETQ5TO-220ABNMOS-21NTC9-5.0R33AXIAL0.4VARISTOR1Res2ResistorR34,R40,R42,R44,R46,R47AXIAL-0.4Res26100K/3WR35AXIAL0.7RES21Res2ResistorR36AXIAL-0.7Res215.6KR37AXIAL0.4RES21470R38AXIAL0.4RES21100KR39AXIAL0.4RES2120/2WR41AXIAL0.6RES2110kR43AXIAL0.4RES211.0/2WR45AXIAL0.7RES21RPotPotentiometerRp1VR5RPot1RES2T4EI3301(6+6L)BYQ1KBL206DiodeBridgeU6RS2100BRIDGE11UC3842U7DIP8UC38431PC817OptoisolatorU8DIP4-9.0OPTOISO11TL431U9TO-126TL43111