经典反激变压器设计公式.xls

FORWARD DISCONTINUE MODE BOUNDARY AT VINMIN ItemunitVALUE Formula聶聶建建華華2009 10 28 VinminVac180 00 VinmaxVac264 00 VHPVdc373 3373 3 VLPVdc216 0216 0 VoVdc12 0012 00 IomaxA33 3033 30 IominA5 505 50 Vd diode Vdc0 500 50 FreqMHz0 080 08 Output power W399 6399 6 Eff 80 0 80 0 Dmax0 400 40 Ap estimatedmm 421853218534000 Po f 0 001 EFF Awmm 2123 0123 0EER3335S Ae xf mm 2160 0160 0 Ap selectedmm 41968019680 delta B xf 0 180 18 Ae choke mm 2125 0125 0 gap choke mm1 901 90 XFORMER VsminVdc31 2531 25 Vo Vd Dmax Vo Vd Dmax n Np Ns 6 916 91VLP Vsmin VsmaxVdc54 0154 01VHP n Npturn37 7137 71VLP Dmax deltaB f Ae xf VLP Dmax deltaB f Ae xf Nsturn5 465 46Np n Ns selected6 006 00 Np selected38 0038 00 Dmax0 370 37 Vo Vd n Vlp LminuH38923892 VLPn Dmax 2 2 f Vo Iomax 0 03 Lg xf mm0 070 074 PI Ae N 2 0 0001 Lg IrmsA3 263 26 Pin Vlp 0 71 CHOKE Dmin0 230 23 Vo Vd Vsmax delta ImaxA11 0011 002 Iomin IpeakA38 8038 80Iomax 0 5 deltaImax LuH10 9210 92 Vsmax Vo Vd Dmin f deltaI ENGJ821882181 2 L Ipeak 2 APcm 41 521 522 W 100 K B NTurn11 4911 49 L choke gap 4 PI 0 0001 Ae choke 0 5 N selectedTurn12 0012 00N L selecteduH11 9011 904 PI Ae N 2 0 0001 Lg BmaxT0 280 28L choke Ipeak N Ae choke L choke Ipeak N Ae choke Output ripple mV100 0100 0 Output E cap uF129 9129 9 Vo Vd 1 Dmax 8 L deltaVo Vd 1 Dmax 8 L delta V fs 2 1000V fs 2 1000 C S Ipeak Io d T ripple Ton 2 Toff 2 Because output E cap be charged Ton 2 to Toff 2 L choke gap 4 PI 0 0001 Ae choke 0 5 Vo Vd 1 Dmax 8 L deltaVo Vd 1 Dmax 8 L delta V fs 2 1000V fs 2 1000 Because output E cap be charged Ton 2 to Toff 2 CCM BOOST TRANSFORMER DESIGN 聶聶建建華華 Input ac lineVacV80 080 0 Input voltageVinV113 1113 1 Output voltageVoutV380 0380 0 DutyD 0 7 select Ttus28 528 5 Min frequencyfKHz35 135 1 Output powerPoW100 0100 0 EfficiencyEFF 95 0 95 0 InductanceLuH608 4 Turn on timeTonus20 0 Input peak currentIpeakA3 723 72 EnergyWJ4213 6 Flux densityBTesl0 300 30 APAPmm 4 7803 Select corePQ2625 Effective areaAemm 2 119 0119 0 Window areaAWmm 2 60 460 4 selected APAPmm 4 71887188 TurnsNTurn63 4 Select turnsNpTurn64 064 0 Assient voltageVassVdc30 030 0 Assient turnNaTurn5 15 1 Air gapLgmm 2 1 0 2009 10 28 Vout Vin Vout Vinac 2 Vo Vlp t 2 Vo Pin 2 Pin Lp Vac 2 2 1 4142 Pin Vacmin 0 5 L IP 2 2 W 100 0 4 B 400 Vin D 1000 f B Ae 4 3 14159 Np Np Ae 10000 L CCM BOOST TRANSFORMER DESIGN ContinueContinue modemode FlybackFlyback transformertransformer calculationcalculation formulaformula PrintedPrinted datedate 28 1028 10月月 09 09 ItemItemunitunitVALUEformulaformula Vo1Vo1VoVoVdcVdc5 005 00VoVo Io1Io1Io IoAdcAdc12 00Io Io PowerPower outputoutputPoPoWW60 0060 00Vo IoVo Io EstimatedEstimated efficiencyefficiencyEffEff 72 72 effeff InputInput powerpowerPinPinWW83 3383 33Po effPo eff RatedRated lineline inputinputVinRVinRVacVac100100VinRVinR LowLow lineline inputinputVinlVinlVacVac7070VinLVinL HighHigh lineline inputinputVinHVinHVacVac264264VinHVinH HighHigh lineline VinpeakVinpeakVhpeakVhpeakVdcVdc373373Vinh 1 4142Vinh 1 4142 RatedRated lineline VinpeakVinpeakVrpeakVrpeakVdcVdc141141Vinr 1 4142Vinr 1 4142 LowLow lineline VinpeakVinpeakVlpeakVlpeakVdcVdc9999Vinl 1 4142Vinl 1 4142 SelectedSelected frequencyfrequencyf fKHZKHZ6767f f ApAp estimatedestimatedApApmm 4mm 4 995099508000 Pin f8000 Pin f AeAe AeAemm 2mm 2 112 00EE2525S AwAwAwAwmm 2mm 2 7575 ApAp selectedselectedAe AwAe Awmm 4mm 4 84008400 VoltageVoltage SpecSpec of of FETFETVdsVdsV V650650 VoltageVoltage specspec of of diodediodeVrVrV V4040 RectifierRectifier dropdrop voltagevoltageVdVdV V0 880 88VdVd N N maxmaxn nNmaxNmax36 0036 00 Vds 0 9 Vhpeak Vo Vd Vhpeak Vr 0 85 Vo Vhpeak Vr 0 85 Vo SelectedSelected turnturn ratioration n 13 3313 33 DutyDuty maxmaxDmaxDmax 0 450 45DmaxDmax TurnTurn ratioratio calculatedcalculatedn n 13 7713 77Vlpeak Dmax Vo Vd 1 Dmax Vlpeak Dmax Vo Vd 1 Dmax MAXMAX VdsVdsVdsVdsV V452452Vhpeak n Vo Vd Vhpeak n Vo Vd MaxMax spikespike of of snubbersnubberVspikeVspikeV V198198Vds VdrainVds Vdrain OutputOutput diodediode voltagevoltage peakpeakVspeakVspeakV V3333Vo Vhpeak nVo Vhpeak n MarginMargin of of diodediode voltagevoltageVdspikeVdspikeV V6 996 99Vr VdiodeVr Vdiode DutyDuty minminDminDmin 0 170 17n Vd Vo n Vd Vo Vhpeak n Vd Vo n Vd Vo Vhpeak K K ratioratioK K 0 500 500 4 0 6 k 0 4 0 6 k I1p I1b I1p I1p I1b I1p PeakPeak currentcurrentIpeakIpeakA A 2 492 49Pin Vlpeak Dmax 1 k 2 Pin Vlpeak Dmax 1 k 2 MaxMax inductanceinductanceL LuHuH533533Vlpeak Dmax f Ipeak 0 001 k Vlpeak Dmax f Ipeak 0 001 k EffectiveEffective areaarea of of corecoreAeAemm 2mm 2 112 0112 0EE2525W EffectiveEffective magneticsmagnetics pathpath lengthlengthLeLemmmm 57 8057 80 FerriteFerrite permeabilitypermeabilityui ui 23002300 BmaxBmax suggestsuggestBmaxBmaxTelsTels0 320 32 NpNp suggestsuggestNpNpTurnTurn36 8736 87Lp Ipeak Ae BmaxLp Ipeak Ae Bmax NpNp selectedselectedNpNpTurnTurn38 038 0 NsNs selectedselectedNsNsTurnTurn2 92 9 ActualActual turnturn ratioration n 13 3313 33Np NsNp Ns GapGap lengthlength calculatedcalculatedLgLgmmmm0 360 364 PI 0 0001 Np 2 Ae L Le ui4 PI 0 0001 Np 2 Ae L Le ui GapGap lengthlengthlg lgmmmm0 200 20 InductanceInductance CalculatedCalculatedL LuHuH9039034 PI Ae Np 2 0 0001 lg Le ui 4 PI Ae Np 2 0 0001 lg Le ui BacBacBacBacT T0 260 26L Ipeak k Np Ae L Ipeak k Np Ae BdcBdcBdcBdcT T0 260 264 PI Np Ipeak 1 K lg Le ui 0 00014 PI Np Ipeak 1 K lg Le ui 0 0001 BmaxBmax calculatedcalculatedBmaxBmaxT T0 530 53Bdc BacBdc Bac NaNaNaNaTurnTurn1313 V na minV na minVaVaV V22 822 8Vo Ns NaVo Ns Na OperationOperation cyclecycleT T 1515 PrimaryPrimary RMSRMS currentcurrentIprmsIprmsA A1 281 28Ipeak SQRT Dmax k 2 3 k 1 Ipeak SQRT Dmax k 2 3 k 1 SecondarySecondary peakpeak currentcurrentIspeakIspeakA A33 2533 25n Ipeakn Ipeak SecondarySecondary RMSRMS currentcurrentIsrmsIsrmsA A18 8318 83Ispeak sqrt 1 Dmax k 2 3 k 1 Ispeak sqrt 1 Dmax k 2 3 k 1 OutputOutput E capE cap RMSRMS currentcurrentIcapIcapA A14 5114 51SQRT Isrms 2 Io 2 SQRT Isrms 2 Io 2 OutputOutput rippleripple allowedallowedRippleRipplemVmV100 00100 00 OutputOutput capacitancecapacitanceCAPCAPuFuF1185 551185 55 Isp 2 Io Toff Io Ton ripple MaxMax missingmissing cyclescycles allowedallowedcyclecycle 0 300 30 InputInput lineline freqfreqfinfinHzHz5050 InputInput capacitancecapacitanceCinCinuFuF158158 LowLow lineline criticalcritical currentcurrentIoslIoslA A3 3Vlp 2 Vo 2 fs Lp V