电源方案12v1.5A详细设计

iW1689DesignwithMOSFETFor12V1.5AAdapterGeneralDesignSpecification:1.ACInputRange90-264Vac2.DCOutput12V,1.5A3.MaxRipple200mVp-p4.NoY-Capdesign2iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:1.SpecificationV12.61211.4VOUTOutputVoltageFreeconvection,sealevel°C400TAMBAmbientTemperatureDesignedtomeetIEC950,UL1950ClassIISafetyMeetsCISPR22B/EN55022BConductedEMIEnvironmentalMeasuredatendofPCB,VIN=90VACPOUT=18W.(TA=25℃)%78ηEfficiencyAuto-restartA2IOUT_MAXOverCurrentProtectionW18POUTContinuousOutputPowerTotalOutputPowerMeasuredattheEndofDCOutputcableIOUT=1.5A@TA=25℃20MHzBandwidthmVP_P200VRIPPLEOutputRippleVoltageA1.50IOUTOutputCurrentOutputW0.5No-loadInputPower(264VAC)Hz6350/6047fLINEFrequency2WireVAC26490VINVoltageInputCommentUnitsMaxTypMinSymbolDescription3iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:2.Schematic4iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:TopsideBottomsidePrimarySideSecondarySideiW1689DigitalControllerEE25Transformer3.CircuitBoardPhotograph5iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:MATERIALS:1.Core:EE25(FerriteMaterialTDKPC40orequivalent)2.Bobbin:EE25HorizontalwithExtendedSecondarystub.3.MagnetWires(Pri):Type2-UEW–sizeseedetails4.MagnetWire(Sec):TripleInsulatedWires–sizeseedetails5.LayerInsulationTape:of3M1298orequivalent.SCHEMATICT1-BT1-A90T13T13TELECTRICALSPECIFICATIONS:1.PrimaryInductance(Lp)=[e-mail](Lk)[e-mail]=3KV50/60Hz,1Min.(Testbetweenpins1~5topinsT1-A~T1-B)1245PrimaryBias/SenseT1-B(F)5(S)4(F)BottomSideClockwiselookingfromBottomsideofBobbinWindingDirectionTurn4114(S)TapeTurn411SecondaryT1-B(F)4.TransformerConstructionFINISHED:1.CutremainedofPin-3,6-10afterwirestermination2.VarnishthecompleteassemblyT1-A(S)T1-A(S)2(F)1(S)2UEW0.3mmx130T2UEW0.3mmx130TTripleInsulatedWire0.55mmx113T–Secondary2UEW0.18mmx317T–Shield2UEW0.18x413T–Bias2UEW0.3mmx130TTripleInsulatedWire0.55mmx113T–SecondaryCutwireandleaveitopenattheendofwinding6iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:5.BillofMaterialItemQty.Ref.DescriptionCost(USCent)/unitSub-Total(Cent)11F1FUSE,2A/250V21VDR107K47131L1UU9.8,25mHmin.41L2DM-Chock,Φ6X8,8uH51L3CM-Chock,Φ10x5x6,600uH62R1,R22.4M,SMD-120672R3,R4,820K,SMD-120681R568K,2W91R668R,1W101R710K,SMD-0603111R8TRIM,SMD-0603121R92.7K,SMD-0603131R108.2Kk,SMD-0805141R1110R,1/8W151R121R,SMD-0805161R1322K,SMD-0805171R1410R,SMD-1206181R151.5K,SMD-1206191R16100R,SMD-0805202R17,R181.0M,SMD-1206211C133uF/400V,13x25.5,E-CAP105℃221C21000uF/16V,10x20,E-CAP105℃231C32.2nF,500VMIN241C422pF,SMD-0805251C51nF,SMD-0805261C60.1uF,SMD-0805271C722uF/50V,5x11.5,E-CAP85℃281C8330uF,6.3x11.5,E-CAP85℃291C91nF/100V,SMD-0805301CX10.22uF,X-CAP,X2311U1iW1689,SOT23-5325D1,D2,D3,D4,D5FR107,DO-41332D6,D81N4148,SMD-DL35341D7FR104,DO-41351D9Y2010DN,TO-220361Q1FQPF5N60C,TO-220371T1EE25TotalBOM(Basedon100K/Mvolume)7iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:6.Regulation,RippleandEfficiencyMeasurement16813294561818714610360163182471749893922982081178.9IIN(mA)12013012090221201201059020145140110902019016510010220VRIPPLE(mVP-P)1.831.831.881.85OCP(A)82.5418.2251.50012.1522.0881.4713.7031.12512.1816.8278.549.1500.75012.2011.6572.174.5830.37512.226.3578.68204012.400.47826483.1418.2401.50012.1621.9481.8413.6911.12512.1716.7379.919.1500.75012.2011.4575.374.5830.37512.226.0880.06182012.400.45723082.0318.2101.50012.1422.2082.3113.6801.12512.1616.6282.149.1430.75012.1911.1380.684.5830.37512.225.6881.79107012.430.25911580.4418.1951.50012.1322.6281.5013.6911.12512.1716.8082.149.1430.75012.1911.1380.254.5830.37512.225.7175.0181.0887012.410.22690CECStandardη(%)Averageη(%)PIN_S/C(mW)η(%)POUT(W)IOUT(A)VOUT(V)PIN(W)VIN(VAC)Note:OutputvoltagemeasuresendofPCBendMeetCECWithlotofmargins!8iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:7.OutputVICharacteristicsVIN=90VAC,Temp.25℃VIN=264VAC,Temp.25℃I(0.5A/Div)V(2V/Div)I(0.5A/Div)V(2V/Div)Note:OutputvoltageismeasuredatDCcableend.9iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:8.OVPPerformance-R9isshorted,orR7(orR10)isopened.90VAC,NoLoadVOUT_MAX=12.44V90VAC,FullLoadVOUT_MAX=11.96V264VAC,NoLoadVOUT_MAX=12.52V264VAC,FullLoadVOUT_MAX=11.96V10iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:9.OutputVoltageRisingtime90VAC,NoLoadTRising=10.0mS90VAC,FullLoadTRising=26.4mS264VAC,NoLoadTRising=9.5mS264VAC,FullLoadTRising=26.8mS11iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:10.ACStartupVoltageCharacteristicNoLoad,VIN_STARTUP=69.0VACFullLoad,VIN_STARTUP=79.8VAC12iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:11.ACShutdownVoltageCharacteristicNoLoad,VIN_SHUTDOWN=42.2VACFullLoad,VIN_SHUTDOWN=78.0VAC13iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:12.StartUp&TurnOnDelayTime90VAC,NoLoadTDELAY=3.04S90VAC,FullLoadTDELAY=3.04S264VAC,NoLoadTDELAY=956mS264VAC,FullLoadTDELAY=972mS14iWattConfidential–DoNotCopy12V,1.5AAdapter8Feb2007Page:13.HoldUpTime90VAC,NoLoadTHOLD_UP=1.00S90VAC,FullLoadTHOLD_UP=6.8mS264VAC,NoLoadTHOLD_UP=6.48S264VAC,FullLoadTHOLD_UP=106mS15iWattConfiden