单端反激式开关电源的设计..

1PowerMosFET23190V9V/1.1A,protel99SEPCB112DC/DC34(PWM)(PFM)PWMPFMDC/DCDC/DC511M1VDVDM1VDCRIM122M1231Q3aVD1C2QVD13bVD1CQab3QDCMQCCMDCMCCMgMUU00MIIg)1(DNDMSPNNNDCMMKDUUMg022)1(2DNRfLKsmQ3QQ220VACRCD444EE2825TB5.025max_02300u1;7V)1(0UNNUeUUspgpgQgU3.0)1(3.10UNNUUspgQ30%))1(3.1(*3.13.10,UNNUUUspgQQ)1(3.13.102,UUUNNgQspDCM0.8T,)1()1(8.0*)1(00maxUNNUUNNDspgsp2eAegpABTDUNmaxmax30PTPILspp0221202sppITPLTDTIUIUPspgag/2110DUPIgsp02)(1,/002grFeeeogeFeFemmFempmppPllAAlAlRRRRNLlAmpRrFepperFeLeglNLAlAAl20051TRTCTTCRf8.190KHZ2U38453:errorV5:1UC3845UC3845SO8SO148.5v7.6V5000.5;50%~70%66UC38451/222.5V34RT/CTCRVref56PWM1A.78Vref5V50mA.2TL431TL431CATHODEANODEREF7VI2.5VREFVIREF1100mA7TL431TL431TL431PWM3PC817PC817,81234UC3842PC8178PC817691U=140VgU=1.2*190=228V16.5138)19(*3.1228*3.1600)1(3.13.1202,UUUNNKgQspK=5)1()1(8.0*)1(00maxUNNUUNNDspgsp=1444.010*52278.0*10*5f=90KHZ5410*11.110*911fTSepgABNTDUmaxmax0684.910*9.80*5.010*11.1*1444.0*22865maxmaxegpABTDUN30pN6sN2202sppITPL6682.01444.0*228*9.01.1*9*222000DUIUDUPIggsp4-510*5.46936682.010*11.1*2162.0*228spgpIDTULmlNLAlrFeppeg4224672010*4261.1196010*82.43010*5.469310*9.80*10*14.3*43VU120K=3101sN40476.16682.07.07.0maxpkpkssIVIVR1sR5KmAR10.55001mAmAIf5.78.051max7067k.05.75.22.195.7min02kfUUUR10650min02kfUUUR0202RVRIUR6.0200*3mA2f2VUUUfRR8.12.16.023AIIIR17m3-20-fka310617/8.1/333RRIUR5k.12200/5.2200ref6AUR10k6RkURUUR265.210/*5.2-9)(ref6ref055R5031212V34PCBPCBPCBProtel99SEPCBPCBPCBPCBPCBPCBPCBPCBPCBPCBR6230VPCB