INOUT

DesignInputs

InductanceIdcIac(b-p)IpeakIrmsLIpIrmskcuTa (C)Ts (C)Freq. [kHz]Material[H][A][A][A][A][milliJoules]d [mm]0.45351005N8750000.00110.10010.1015.831294.511.0554099729450101TrianglarWaveformAssumed forAC current

DESIGNOUTPUTS

Skin, Prox.Core TypeCore #LIpIrmsJrmsBpeakNAcuAirgapEffects?Vc+Vw[milliJoules][A/mm2][mT][#][mm2][mm][cm3]E-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AEC-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AEFD-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AEP-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AER-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AETD-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/APM-corePM 114/93475.692.02321272.938.30NO898.8PotcoreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/APQ-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/ARMI-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AU-coreERROR:#N/A0.00ERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/AERROR:#N/A

Notes

Any row having multiple cell entries of #N/A indicates the core in

that row cannot meet the input specifications. Cell entries with

negative numbers or #NUM! Indicate numerical problems in the calculations

for that cell. Entries in such cells should be ignored but the rest of

the entries in that row are still reliable. Airgap calculations are

the most likely to have problems.

3C304F14F14F1100 mW100 mW100 mWPF(calc.)Freq.PF(exp.)PF(exp.)ERROR:#DIV/0!30002425ERROR:#DIV/0!50003030ERROR:#DIV/0!100004540ERROR:#DIV/0!

Ferrite_DataFerriteMaterialParameters

MANUFACT.SUGGESTEDBsatMAX FREQMATERIALKcaba/o[mT][kHz]C(T)SIEMENS37010000.9997N270.000028010812.20500035010001.0326N415.00E-0511.95480030020001.0007N490.000000917112.83210036010000.9641N531.8E-0512.391430031030000.998N593.13E-0512.7406170032010001.0276N616.65E-0512.226360034010000.92533N625.13E-0712.866460038010000.9751N639.9E-0712.760470034010000.9901N670.000000412512.912430033010000.988N721.28E-0612.870400034010001.0073N879.24E-0813.174600PHILIPS32010000.94983B89.50E-071.62.5400035010001.071133C151.07E-071.72.8500035010001.2033C303.61E-071.52.7500031010013C809.60E-061.422.24000320100013C811.20E-061.562.555500310200013C854.50E-071.62.6400033010001.07953C905.40E-071.52.6550033010001.0913C941.53E-071.62.7550033020001.013F31.52E-061.32.5400035030001.03953F351.25E-081.53.552500310500013F41.71E-071.353.1217001801000014F11.79E-051.352.25300

Transfer Data

330110.000001280612.8698573434000

E_CORES

TransferDataMaximumPhilipsCalculatedCalculatedThermallyLimitedFluxLimitedInductanceDesiredInductanceCore RatingCore # Designationw/bobbinw/bobbinL Ip Irms0.0ERROR:#N/ACore Type/(mm)(mm)(mm)(mm)(mm)(mm)(mm)(mm2)(mm3)(mm)(mm2)(mm3)(mm2)[C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]CriteriaERROR:#N/ANumberDim. ADim. BDim. CDim. DDim. EDim. FLmAcVcLw AwVw AsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gAirgapE5.3/2.7/25.252.6521.93.81.412.32.834.414.50.912.7134.3992.6651390.511.9803.4803.5330.0330.0108.213.5330.0330.013.50.0050.43243240680.90.19140879.70414582-0.08342433410.033576862654659.0909090909597522373868.2630.0033986718-1.9955493855 TestEERROR:#N/AE6.3/2.9/26.32.921.853.61.413.82.838.714.10.68.9153.6868.1751571.212.6838.4838.4330.0330.0108.214.4330.0330.014.40.0040.40547094940.70.16662729.94640199-0.11571795920.024201824454659.0909090909597522263146.8910.0033986718-1.9955493846FALSE# of TurnsE13/6/612.75.76.44.19.53.227.720.5567.833.015.5511.5821.1162.4400370.96.1506.9507.0330.0330.0108.26.6330.0330.06.60.3130.87910052977.95.311597458.6032852-0.05883316460.35018737027472.922585227311168645799.520.0095289394-6.2544936776ERROR:#N/AE13/7/412.956.53.74.58.953.729.513.7404.326.913.5363.7717.2185.9350455.36.8544.5544.5330.0330.0108.27.4330.0330.07.40.2040.7859485827.73.516860619.0482791-0.03967127250.348141145711179.361179361224995195289.82060.0073682479ERROR:#NUM!JrmsBpeakE/16/8/5168.24.75.711.34.736.822.1812.433.124.5809.71129.0118.1550339.35.9491.5491.5330.0330.0108.26.3330.0330.06.30.5080.923126178511.98.616218669.1812908-0.03953439680.56688244956928.2686530319599850956.206220.0093173268ERROR:#NUM!ERROR:#N/AERROR:#N/AE19/8/519.058.058.75.714.34.7539.841.31645.045.839.01783.41715.977.7836244.05.0438.1438.2330.0330.0108.25.3330.0330.05.31.2581.108217597615.821.411525112.9662414-0.05541273440.75608364943703.45927514712742930993.771370.0131606559-7.9859296854E19/8/919.18.18.75.714.34.7539.941.31648.345.839.01783.41723.977.3840244.95.0438.7438.7330.0330.0108.25.3330.0330.05.31.2601.105912638215.921.411549155.225266-0.05526938060.75809996593703.45927514712742930616.871270.0131606559-7.9859295724AcoreVc + VwE20/10/520.7105.36.312.85.245.227.61245.836.833.01215.11645.581.0802326.05.7484.6484.7330.0330.0108.26.2330.0330.06.20.8350.943701631615.714.217151412.2875758-0.03577320360.78775610825553.17324185256167221180.863120.0103713114ERROR:#NUM!ERROR:#N/AERROR:#N/AE20/10/62075.9714.15.945.534.81582.640.440.91651.61422.093.8693214.34.7418.8418.8330.0330.0108.24.9330.0330.04.91.0351.191605097715.517.613329074.7728272-0.0477428270.74060325684396.59450001313865749506.027030.0115946968ERROR:#NUM!E25/9/625.49.456.36.519.36.3548.540.01941.349.564.73203.72354.956.61148223.14.7424.7424.7330.0330.0108.25.0330.0330.05.01.9241.16504586625.032.718878813.4329215-0.02938923071.43087830823825.65815636682926891386.63470.0123788417ERROR:#NUM!E25/10/625.49.656.356.418.86.3548.440.31952.148.860.82967.22335.057.11138231.44.8430.1430.1330.0330.0108.25.1330.0330.05.11.8581.141538480724.031.617943825.7148954-0.03152974271.33543377873795.5348637972880978762.205490.0124245204ERROR:#NUM!E25/13/72512.87.58.717.57.556.656.33182.349.666.43290.72737.048.71334206.14.6413.1413.2330.0330.0108.24.8330.0330.04.82.6541.218106174424.545.113140619.7313059-0.04539675521.27487775222720.80808080811480359763.435220.0144638798ERROR:#NUM!E25/16/625.415.856.312.919.36.3574.140.02965.549.5137.36800.83497.938.11705174.64.2389.9389.9330.0330.0108.24.4330.0330.04.43.5561.338046742146.260.434971707.3816097-0.010044082ERROR:#NUM!3825.65815636682926764418.378750.01237883ERROR:#NUM!E30/15/730.8157.39.719.57.268.852.63618.352.295.24970.93692.636.11800209.64.6415.5415.6330.0330.0108.24.8330.0330.04.83.5921.206769436535.561.020420438.1589804-0.02436551252.39196722442911.82371661821695483598.261860.014031903ERROR:#NUM!E30/15/1330.815.212.69.719.57.268.890.76245.362.895.25980.34371.830.52131174.34.2389.7389.7330.0330.0108.24.4330.0330.04.45.5861.33925683832.094.810645611.1245723-0.05475192421.7103566931687.0089786756569049297.4444890.018405304ERROR:#NUM!E31/13/930.913.19.48.621.99.461.088.45392.661.185.05195.83670.136.31789169.04.1385.5385.5330.0330.0108.24.3330.0330.04.34.7721.363230526228.181.09585033.45674927-0.06400104571.41174283631732.0671632578599874288.5222210.0174769715ERROR:#NUM!E32/16/93216.49.511.222.79.572.690.36552.262.6120.67553.54521.029.52204156.24.0375.1375.1330.0330.0108.24.1330.0330.04.16.6141.425559013938.1112.312756204.6394883-0.0432168442.20033344771695.7945101989574984192.4155040.0176196998ERROR:#NUM!E34/14/934.314.19.39.825.59.369.286.55986.566.5131.48741.04558.329.32222150.93.9370.6370.6330.0330.0108.24.0330.0330.04.06.7671.454377454640.7114.914229706.7789216-0.03717421982.49392331541769.5161815869626078718.1635880.0173323466ERROR:#NUM!E36/21/153621.815.515.7524.510.295.4158.115075.677.7189.914759.97208.418.53514117.83.4339.9340.0330.0330.0108.23.5330.0330.03.515.4871.678352781950.9262.99736150.54506978-0.05581587122.9930230093968.0294405152187296530.7055620.0214625975ERROR:#NUM!E41/17/1240.616.612.410.428.612.4576.6154.411824.078.9139.711026.86121.721.82984130.63.6352.4352.4330.0330.0108.23.7330.0330.03.711.8141.580550349539.8200.67786494.01278914-0.07707659142.0578867734991.35545113196458690.881530.0208102154ERROR:#NUM!E42/21/15432115.214.829.512.297.7185.418116.685.8219.818869.68240.916.24017108.63.3330.5330.5330.0330.0108.23.3330.0330.03.320.0571.759797707756.2340.59172831.84563941-0.0591218953.323386313825.3098282218136122733.130050.021569594ERROR:#NUM!E42/21/2043212014.829.512.297.7244.023837.695.4219.820979.79056.914.7441598.53.2319.4319.4330.0330.0108.23.1319.4319.43.224.3191.848523231553.5412.96854861.98073112-0.08357925213.0291713891647.974047789583894630.99151830.0227399096ERROR:#NUM!E42/33/204232.8202629.512.2140.9244.034385.795.4395.637763.412634.310.6615985.42.9303.9303.9330.0330.0108.22.8303.9303.92.938.7651.985779550889.7658.112099100.2298084-0.033395852510.7970160924681.138500816392675335.92802610.0236362243ERROR:#NUM!E46/23/304623.23015.831.514.2103.3426.043990.9119.4235.528130.211996.111.1584881.12.9298.5298.5330.0330.0108.22.7298.5298.52.938.5652.037525183652.0654.74083632.383498-0.15014922622.8929150596397.192807177831504328.76569040.0190081986ERROR:#NUM!E47/20/1646.919.615.612.132.415.688.0243.421407.292.7171.815916.08265.016.14029108.03.3329.8329.8330.0330.0108.23.3329.8329.83.320.4841.765865391243.8347.85437115.5770543-0.11476908642.1611260805629.292756315879130156.29936870.0211703118ERROR:#NUM!E50/27/155027.214.618.634.114.6118.9213.225336.892.9318.629600.811269.211.85494100.03.2321.1321.1330.0330.0108.23.1321.1321.13.231.1901.83476179378.1529.511421661.9512102-0.04028645456.2655615913737.870476092108779928.3378190.0219040695ERROR:#NUM!E55/28/2156.227.82118.537.517.2123.7361.244665.6112.2331.037123.513969.79.5681083.32.9301.2301.3330.0330.0108.22.8301.2301.32.947.0032.010688039574.1798.06808501.39911275-0.07836761854.9176319414464.141377707843017515.91528320.0197505201ERROR:#NUM!E55/28/2556.627.82518.537.517.2124.3430.053443.4120.2331.039771.414928.68.9727878.12.8294.5294.6330.0330.0108.22.7294.5294.62.852.9822.07646077571.7899.55662771.64384329-0.09795235714.6065260226398.723237092331738694.84541070.0171942209ERROR:#NUM!E56/24/1956.123.618.814.638.118.8106.0353.437450.5109.4244.326719.411777.711.3574289.53.0308.9308.9330.0330.0108.22.9308.9308.93.036.0771.939663263656.7612.55183354.63220137-0.11551527963.1453247494462.591787863742738749.0493250.0190301819ERROR:#NUM!E65/32/276532.827.422.244.220145.7548.079819.5136.7483.666104.919973.16.7973766.72.6278.9278.9330.0330.0108.22.4278.9278.92.686.3512.246115054396.91466.06351422.80293352-0.07755637887.8630155673330.468030670921789086.63282180.0109757658ERROR:#NUM!E71/33/3270.533.23221.94822148.9704.0104843.2152.7514.878620.222897.65.81116360.82.5270.0270.1330.0330.0108.22.2270.0270.12.5109.1962.35218112798.51853.95190974.95185106-0.09889050737.721961494265.645424652714071525.868818-0.0024011893ERROR:#NUM!E80/38/208038.119.828.259.119.8184.9392.072493.3144.81033.0149564.127455.84.91338560.32.5269.2269.2330.0330.0108.22.2269.2269.22.5121.0402.3632327083196.72055.018733853.9151563-0.0027645235ERROR:#NUM!478.589664010245716028.23851620.0222395506ERROR:#NUM!

Single airgapSingle airgapin center legin center legof the E-coreof the E-coreE Core Dimensions

[mW/cm3]PhilipsCalculatedCalculatedPsp,cu Designationw/bobbinw/bobbinFrom Ferroxcube CD1800.2Core Type/[mm][mm2][mm][mm2]2047.6NumberlwAwlwAw435.6E5.3/2.7/214.50.912.61.5545.0E6.3/2.9/214.10.612.81.6395.0E13/6/633.015.532.016.8274.1Magnetic path length lm = 4D +(E-F) + (0.5)(A-E)E13/7/426.913.524.011.6275.2E/16/8/533.124.533.021.6378.0Core Area Ac = FCE19/8/545.839.033.740.0237.1E19/8/945.839.047.635.9248.0Core Volume Vc = Aclm = FC(4D +(E-F) + E)E20/10/536.833.038.728.6258.3E20/10/640.440.9226.9E25/9/649.564.7188.0E25/10/648.860.853.147.4231.2E25/13/749.666.449.056.0187.7E25/16/649.5137.3181.1E30/15/752.295.256.080.0165.6E30/15/1362.895.2159.1E31/13/961.185.0119.5E32/16/962.6120.660.097.0134.8E34/14/966.5131.469.0102.0108.7E36/21/1577.7189.995.4Mean turn length = lwE41/17/1278.9139.781.2114.078.6 E42/21/1585.8219.893.0178.073.3 No coil former : lw = 2(F+C)+0.5(E-F)With coil former lw = 2(F+C+3.2mm)+0.5(E-F-1.6mm)E42/21/2095.4219.878.5255.0107.9E42/33/2095.4395.697.3E46/23/30119.4235.576.0E47/20/1692.7171.894.7131.069.7E50/27/1592.9318.683.8E55/28/21112.2331.0119.0278.056.4E55/28/25120.2331.049.8E56/24/19109.4244.3114.0205.049.2E65/32/27136.7483.6150.0394.0E71/33/32152.7514.8E80/38/20144.81033.0Winding Volume Vw = Awlw Surface Area of assembled transformer As

As = surface area of assembled core plus surface area of winding not included in core surface area.

Core surface area = 4AB + 4BC + 2AC

Surface area of winding not included in core surface area =4E{0.5}(E-F)+ 4{2D(0.5)(E-F)} = 2E(E-F) + 4D(E-F) = 2(E-F)(E+2D)

As = 4AB + 4BC + 2AC + 2(E-F)(E+2D)

EC_Cores

TransferDataFerroxcubeFerroxcubeThermallyLimitedFluxLimitedMaximumPhillipsw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore #designation[mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0ERROR:#N/ACore #Dim. ADim. BDim. CDim. DDim. EDim. HLmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/AEC3535.317.39.522.89.512.377.484.3653053.1102.55442.84327.130.82109.5176.24.2391.1391.17329.97330.00108.24.4329.97330.04.385.6207775451.334.695.412398880.3-0.11.51815.5659015579.317230.0174666444ERROR:#NUM!TestECAirgapEC4141.619.511.627.111.613.989.31211080062.4137.58580.05854.722.82854.2147.33.9367.4367.48329.97330.00108.24.0329.97330.03.959.76922069821.542.0165.910467222.0-0.11.91264.8319816837.8303940.0200403627ERROR:#NUM!ERROR:#N/AEC5252.224.213.43313.415.91051801880074.9212.015878.88921.014.94349.0125.43.6347.4347.46329.97330.00108.23.6329.97330.03.6020.42059863921.659.0346.79909601.3-0.12.5850.3144470130.5989180.0198054385ERROR:#NUM!TRUE# of TurnsEC7071.734.516.444.516.422.81442794010097.3465.045244.516981.47.98278.497.03.1317.7317.72329.97330.00108.23.1317.69317.73.1358.06011507121.9112.3985.712697094.7-0.06.7569.864822342.97184560.0172111588ERROR:#NUM!ERROR:#N/AJrmsBpeakSingle airgapSingle airgapERROR:#N/AERROR:#N/Ain center legin center legof the coreof the coreAcoreVc + Vw[mW/cm3]ERROR:#N/AERROR:#N/APsp,cu189.9643920822154.7839738028128.5590025427EC Core Formulas93.3894183942

Magnetic parameters (mean path length lm, core area Ac, and core volume Vc) given in manufacturer's catalog.

Winding parameters:

Mean turn length lw = 2 (D/2 + E/2)/2 = 0.5 (D + E) ; No coil formerPhillipsCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculatedlw = 0.5 (D + E+1.6) ; with coil former having walls 0.8 mm thickdesignationw/bobbinw/bobbinw/bobbinw/bobbinNo bobbinNo bobbinCore #LwAwLwAwLwAwWinding window area Aw = 2H (D-E)/2 = (D-E)H ; no bobbinEC3553.223134.5553.1102.550.711163.59EC4163.271182.0962.4137.560.759215.45Aw = (D-E-1.6)(H-0.8) ; with bobbin having walls 0.8 mm thickEC5275.36271.874.9212.072.848311.64EC7098.12558397.3465.095.613640.68Winding volume Vw = Awlw = (D + E) H (D-E) = (D2 - E2)

Surface area of assembled core and winding AsExposed core surface area:Front and back = 2(A2B) - 2(2HD) = 4AB - 4DHTop and bottom = 2ACLeft and right = 2(2BC) = 4BCTotal exposed core surface area = 4AB - 4DH + 2AC + 4BC

Exposed winding surface area:Vertical surface = 2HD - 2(2HC)Horizontal surface = 2(0.5D)2 - 2CD

As = 4B(A+C) + 2AC - 4DH + 2H(D - 2C) + 0.5D2 - 2CD

EFD_Cores

TransferDataFerroxcubeFerroxcubeThermallyLimitedFluxLimitedMaximumPhillipsw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore #designation[mm][mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0.00ERROR:#N/ACore #Dim. ADim. BDim. CDim. DDim. EDim. FDim. HLmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/AEFD1010.55.22.77.74.61.53.823.77.2171.014.84.262.2251.0531.1122.4524.97.3572.2572.22329.97330.00108.28.0329.97330.08.020.040.732.600.6110390917.77-0.070.1021256.319.04E+106.091E-03-4.486TestEFDAirgapEFD1212.56.23.59.05.42.04.628.511.4325.018.66.5120.9342.3389.5166.9374.26.1508.5508.59329.97330.00108.26.7329.97330.06.670.070.873.341.258482361.56-0.090.1313425.043.60E+107.378E-03-5.175ERROR:#N/AEFD1515.07.54.711.05.32.45.534.015.0510.025.616.7427.5578.5230.5282.0300.85.5471.3471.31329.97330.00108.25.9329.97330.05.910.220.997.623.7315094893.95-0.040.3410203.032.08E+107.662E-03ERROR:#NUM!TRUE# of TurnsEFD2020.010.06.715.48.93.67.747.031.01460.034.127.7944.6986.9135.1481.1200.14.5408.8408.89329.97330.00108.24.7329.97330.04.710.601.2410.0610.199634957.42-0.070.454936.954.87E+091.234E-02-8.824ERROR:#N/AEFD2525.012.59.118.711.45.29.357.058.03300.040461840.01352.098.6659.1128.23.6350.1350.17329.97330.00108.23.7329.97330.03.651.451.6012.9624.556643590.83-0.100.572638.711.39E+091.603E-02-10.513JrmsBpeakEFD3030.015.09.122.414.64.911.268.069.04700.052.952.32766.71894.770.4923.7123.73.5345.8345.81329.97330.00108.23.6329.97330.03.581.921.6314.4332.536205376.67-0.110.642218.059.84E+081.869E-02-13.631ERROR:#N/AERROR:#N/ASingle airgapSingle airgapAcoreVc + Vwin center legin center legERROR:#N/AERROR:#N/Aof the coreof the core[mW/cm3]Psp,cu635.9926275712439.9578302489345.8924886912EFD Core Formulas219.3806417261131.9177788266126.5346808578

Magnetic parameters (mean path length lm, core area Ac, and core volume Vc) given in manufacturer's catalog.

Winding parameters:

Mean turn length lw

PhillipsCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculateddesignationw/bobbinw/bobbinw/bobbinw/bobbinNo bobbinNo bobbinCore #LwAwLwAwLwAwEFD1021.04.514.84.217.111.8EFD1224.37.618.66.520.516.6EFD1528.219.325.616.724.331.4EFD2039.133.834.127.735.250.1EFD2548.548.5404644.767.9EFD3055.164.552.952.351.287.4

lw = 2(E+F) +2(0.25)(D - E) = 2(E+F) +0.5(D-E) ; no coil former

lw = = 2(E+F+3.2 ) +0.5(D-E-1.6) ; with coil former having wall thickness 0.8 mm

Winding window area Aw = 2H (D-E)/2 = (D-E)H : no coil formerAw = (D-E-1.6)(H-.8) ; with coil former having wall thickness 0.8 mm

Winding volume Vw = Awlw

Surface area of assembled core and winding AsExposed core surface area:Front and back = 2(A2B) - 2(2HD) = 4AB - 4DHTop and bottom = 2ACLeft and right = 2(2BC) = 4BCTotal exposed core surface area = 4AB - 4DH + 2AC + 4BC

Exposed winding surface area:Vertical surface = 2DH - 4CH Horizontal surface = 4(D-E)E + 4F(D-E) +2EF +2(D-E)2 - 2DC

Total surface area As = 2H(D-2C) + 4(D-E)(E+F) + 2EF +2(D-E)2 - 2CD

= 4(D-E)(E+F) + 2EF +2(D-E)2 - 2CD

EP_Cores

TransferDataFerroxcubeFerroxcubeThermallyLimitedFluxLimitedMaximumPhillipsw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore #designation[mm][mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0ERROR:#N/ACore #Dim. ADim. BDim. CDim. DDim. EDim. FDim. GLmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/AEP79.47.55.06.57.23.41.715.510.7165.017.74.376.1381.2349.8185.8770.88.8654.1654.19329.97330.00108.29.9329.97330.09.860.0673437560.63.31.19068909.5-0.10.114303.31350892140916668046.6323-0.10462521790.1106065444TestEPAirgapEP1011.510.27.47.69.43.31.819.311.3215.021.711.4247.4604.1220.7294.5636.98.0612.0612.11329.97330.00108.28.9329.97330.08.900.17020048910.77.82.920863256.1-0.00.313543.84553499636686811493.3007-0.04183468390.2619505411ERROR:#N/AEP1312.813.09.09.09.74.52.424.219.5472.023.013.5310.5847.0157.4412.9527.77.3573.2573.26329.97330.00108.28.0329.97330.08.040.31422191470.78.45.312898231.9-0.10.37848.484848484812319496648.133-0.06934447520.2932605909TRUE# of TurnsEP1718.016.811.411.012.05.73.329.533.7999.028.918.6537.51448.492.1706.1459.56.8546.2546.30329.97330.00108.27.5329.97330.07.460.69411340790.810.711.89548108.3-0.10.34541.40814674944124703906.36602-0.09443302780.3453160822ERROR:#N/AEP2024.021.414.415.016.58.84.541.178.73230.040.833.61370.92524.652.81230.8267.55.2452.4452.43329.97330.00108.25.5329.97330.05.542.17492783251.114.436.95481998.3-0.20.51944.6690539448756243927.552566-0.16673154380.4657602926JrmsBpeakERROR:#N/AERROR:#N/ASingle airgapSingle airgapin center legin center legAcoreVc + Vwof the coreof the coreERROR:#N/AERROR:#N/A[mW/cm3]Psp,cu961.7727996762EP Core Formulas783.6773683289639.6147477514Core dimensions:PhillipsCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculated550.5001786116Magnetic dimensions (lm, Ac, Vc) given on core spec sheets.designationw/bobbinw/bobbinw/bobbinw/bobbinNo bobbinNo bobbin303.6994250288Winding dimensions:Core #LwAwLwAwLwAwMean turn length lw = 2(E+F)/2 = (E + F) ; no bobbinEP719.23.717.74.316.69.5EP1022.513.121.711.419.922.6lw = (E + F+1.6) ; bobbin with 0.8 mm thick wallsEP1324.813.323.013.522.323.4Winding window area Aw = C(E-F)/2 ; no bobbinEP1730.323.028.918.627.835.9Aw = (C-1.6)(E-F-1.6)/2 ; bobbin with 0.8 mm thick wallsEP2042.239.040.833.639.755.4

Winding volume Vw = lw Aw

Surface area As:Exposed core surface:

Vertical surface area = 2BD + AB + AB - EC = 2B(D+A) - ECTop and bottom surface = 2ADExposed core surface area = 2AD + 2B(A+D) - EC

Exposed winding surface = CE/2

Total surface area = 2AD + 2B(A+D) - EC + 0.5CE = 2AD + 2B(A+D) + 0.57CE

ER_Cores

TransferDataCalculatedCalculatedCalculatedThermallyLimitedFluxLimitedMaximumPhillipsw/bobbinw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore #designation[mm][mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0ERROR:#N/ACore #Dim. ADim. BDim. CDim. DDim. EDim. FDim. GLmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/AER9.59.55.02.57.13.51.67.514.28.5120.019.81.938.071.71859.635.0221.34.7423.4423.47329.97330.00108.25.0329.97330.04.980.011.20.70.22326483.6-0.40.018005.347593582964838176927.22850.006984415ERROR:#NUM!TestERAirgapER1111.06.02.58.04.31.58.714.711.9174.022.92.044.976.71738.337.4170.84.2386.9386.95329.97330.00108.24.3329.97330.04.300.011.40.70.31429282.2-0.70.012860.962566844933080626531.1180.0085694533ERROR:#NUM!ERROR:#N/AER14.514.56.83.011.84.81.611.819.017.6333.028.64.3123.473.21821.835.778.22.8294.7294.70329.97330.00108.22.7294.67294.72.810.032.10.90.51610161.3-0.60.09737.411868913418963223785.44460.0095467124ERROR:#NUM!TRUE# of TurnsER2828.611.414.021.89.99.821.864.081.45260.052.392.74846.41689.478.9823.681.52.9299.0299.00329.97330.00108.22.7298.98299.02.872.912.020.549.58361931.8-0.11.02075.0646974147861022699.5353540.0186263896ERROR:#NUM!ERROR:#N/AER28L28.611.416.921.89.912.721.875.581.46140.052.3122.66408.12165.561.61055.784.12.9302.3302.35329.97330.00108.22.8302.32302.32.923.962.027.667.211133114.5-0.11.42052.1408973428842072421.0753820.0185999783ERROR:#NUM!JrmsBpeakER3535.011.420.726.211.314.826.290.8107.09710.061.4186.211430.33174.742.01547.773.22.7288.0288.04329.97330.00108.22.5288.02288.02.727.022.139.1119.212637849.7-0.12.31638.6655622516536876592.3368590.0207178073ERROR:#NUM!ERROR:#N/AERROR:#N/AER4040.013.422.429.613.315.529.698.0149.014600.069.9216.115097.13903.834.21903.164.12.5275.0274.99329.97330.00108.22.3274.96275.02.5410.142.342.4172.110328983.6-0.12.61232.6412190946303750375.3750550.023273238ERROR:#NUM!ER4242.015.622.430.115.515.530.198.8194.019200.074.1191.114161.34207.131.72051.061.52.5271.0271.04329.97330.00108.22.3271.01271.02.4911.272.336.7191.36958675.6-0.12.1960.5175660531184417751.6475360.0255205643ERROR:#NUM!AcoreVc + VwER42A42.015.621.830.415.015.630.499.0170.016800.073.8204.215070.94042.333.01970.661.82.5271.6271.58329.97330.00108.22.3271.55271.62.5010.602.339.4180.08502299.9-0.12.61093.9277708325239220047.3412060.0257758339ERROR:#NUM!ERROR:#N/AERROR:#N/AER4848.021.021.238.018.014.738.0100.0255.025500.090.4255.823128.94043.633.01971.240.52.0234.4234.42329.97330.00108.21.7234.40234.42.0213.922.939.9236.46670733.7-0.12.9844.8727881335142684196.7243460.0289178897ERROR:#NUM!ER5453.518.018.340.717.911.140.791.8250.023000.094.5218.420638.13324.940.11620.937.11.9227.4227.39329.97330.00108.21.6227.37227.41.9410.823.032.6183.75726738.0-0.12.3888.4210642027157785540.3209530.0293957046ERROR:#NUM!

Single airgapSingle airgap[mW/cm3]in center legin center legPsp,cuof the coreof the core245.6742588086183.366827190369.807314072873.8382937751ER Core Formulas77.081764768963.90282872Magnetic dimensions (mean path length lm, core area Ac, and core volume Vc) given on core specification sheets.53.400694718150.492675903550.8853917246Winding dimensions:28.796036331525.5943877208Mean turn length lw = 2 (G+E)/2 = (G+E) ; no bobbinPhillipsCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculateddesignationw/bobbinw/bobbinw/bobbinw/bobbinNo bobbinNo bobbinlw = (G+E+1.6) ; bobbin with 0.8 mm thick wallsCore #LwAwLwAwLwAwER9.519.81.918.42.817.36.4Winding area Aw = 2F(G-E)/2 = F(G-E) ; no bobbinER1122.92.021.62.820.46.6ER14.528.64.327.05.126.111.2Aw = (F-0.8)(G-E-1.6) ; bobbin with 0.8 mm thick wallsER2852.392.749.8116.6ER28L52.3122.649.8151.1Winding Volume Vw = lwAw = F(G2 - E2)ER3561.4186.258.9220.5ER4069.9216.167.4252.7Surface area As:ER4274.1191.171.6226.3Exposed core surface: front and back = 2(2CA) - 2(2FD) = 4AC-4DFER42A73.8204.271.3240.2Left and right = 2(2CB) = 4BCER4890.4255.887.9294.0top and bottom = 2ABER5494.5218.492.0253.1Total exposed core surface = 4AC -4DF+4BC+2AB = 4C(A+B)+2AB-4DF

Winding surface:Vertical surface = G2F - 2(2FB) = 2FG - 4BFHorizontal surface = 2(G/2)2 - 2BGTotal winding surface = 2FG-4BF + 0.5G2 -2BG = G(2F-0.5G) - 2B(2F+G)

As = 4C(A+B)+2AB-4DF + G(2F-0.5G) - 2B(2F+G)

ETD_Cores

TransferDataFerroxcubeFerroxcubeFerroxcubeThermallyLimitedFluxLimitedMaximumPhillipsw/bobbinw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore #designation[mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0ERROR:#N/ACore #Dim. ADim. BDim. CDim. DDim. EDim. FLmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/AETD2930.615.89.811229.87276547052.095.04940.0334339.91629.8156.64.0375.4375.39329.97330.00108.24.1329.97330.04.104.39067041811.430.074.511903508.1-6.5E-021.52013.7559808612810854660.1660740.0183537776ERROR:#NUM!TestETDAirgapETD343517.311.111.825.611.178.697.1764060.0123.07380.0428131.12087.1139.03.7360.1360.11329.97330.00108.23.8329.97330.03.826.78199897121.536.3115.111281207.0-6.7E-021.91576.1632805917496697527.344050.0201655522ERROR:#NUM!ERROR:#N/AETD394019.812.814.229.312.892.21251150069.0177.012213.0562323.72741.3115.63.4337.7337.75329.97330.00108.23.4329.97330.03.4411.29157690341.746.9191.711348686.1-6.3E-022.71224.3636363636299666913.6035680.0222279053ERROR:#NUM!TRUE# of TurnsETD444522.315.216.132.515.21031731780077.0214.016478.0717118.63496.0102.03.2323.3323.32329.97330.00108.23.2323.29323.33.2117.28867738471.853.0293.59454099.0-7.6E-023.2902.9386090938162941496.2547650.0241983556ERROR:#NUM!ERROR:#N/AETD4949.824.716.717.736.116.71142112400085.0273.023205.0878315.24282.090.73.0310.3310.38329.97330.00108.22.9310.35310.43.0324.35346963181.963.8413.59728645.5-7.0E-024.2771.1839406608118837734.7887980.0248967648ERROR:#NUM!JrmsBpeakETD5454.527.618.920.241.218.91272803550096.0316.030336.01094112.25333.981.02.9298.4298.40329.97330.00108.22.7298.37298.42.8633.98772384742.069.8577.08343799.5-8.3E-024.5604.481501109372989582.70560290.0239554872ERROR:#NUM!ERROR:#N/AERROR:#N/AETD5959.83121.6522.544.721.6513936851500106.0366.038796.0134199.96542.072.52.7287.0287.00329.97330.00108.22.5286.97287.02.7147.05713210632.276.4798.97232601.4-9.6E-025.1478.195624209245659267.07571140.0211685626ERROR:#NUM!

AcoreVc + VwERROR:#N/AERROR:#N/ASingle airgapSingle airgapin center legin center leg[mW/cm3]of the coreof the corePsp,cu166.0235014445144.7601564232ETD Core FormulasPhillipsCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculated116.9297233034designationw/bobbinw/bobbinw/bobbinw/bobbinNo bobbinNo bobbin99.9240357155DimensionsCore #LwAwLwAwLwAw85.3166446333Mean turn length lw =2 (E+F)/4 = 0.5(E+F) ; no bobbinETD2952.438108.1252.095.049.926134.273.2582992108ETD3460.131141.960.0123.057.619171.163.0098391836ETD3968.609199.6669.0177.066.097234.3lw = 0.5(E+F+1.6) ; bobbin with 0.8 mm thick wallsETD4477.401240.2177.0214.074.889278.53ETD4985.408300.8285.0273.082.896343.38Winding window area Aw = 2D = D(E-F) ; no bobbinETD5496.869401.5896.0316.094.357450.46ETD59106.6815465.465106.0366.0104.1695518.625Aw = (D-0.8)(E-F-1.6) ; bobbin with 0.8 mm thick walls

Winding volume Vw = {0.25 E2 - 0.25F2]2D = 0.5D(E2 - F2)

Surface Area AsExposed core surface:left and right = C4B : top and bottom 2CA : front and back 2(2AB-2DE)Summing 4BC + 2AC+4AB-4DE

Exposed winding surface:Vertical cylindrical surface = 2D*2E/2 - 2(2DC) = 2DE - 4CDHorizontal circuilar surfaces = 2(0.25E2) - 2CE = 0.5(E2) - 2CE

Summing exposed core and winding area:As = 4BC+2AC+4AB-4DE+2DE-4CD+0.5(E2)-2CE

PM_CORES

TransferDataCalculatedCalculatedCalculatedThermallyLimitedFluxLimitedMaximumSeimensw/bobbinw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore #Designation[mm][mm][mm][mm][mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]476PM 114/93Core # Dim. A Dim. B Dim. C Dim. D Dim. EDim. FDim. GDim. HDim. IDim. JLmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteria5.0PM 50/3949.238.823.426.84.81.419.739.75.437.68437031000191.5231.844406.613734.09.76695.388.83.0308.0308.07329.97330.00108.22.9308.04308.12.9935.61409272851.953.6604.64702945.9-0.22.2443.074304450739217922.80784130.0136335866ERROR:#NUM!TestPMAirgapPM 62/4962.049.0-33.4--25.548.85.4-10957062000238.3345.082229.621570.56.210515.672.92.7287.6287.63329.97330.00108.22.5287.60287.62.7169.08009689392.172.31172.84413856.3-0.23.7308.051864499218941248.166876-0.0023494521ERROR:#NUM!8.3PM 74/5974.059.0-40.7--29.557.55.4-128790101000278.2516.1143586.630555.34.414895.760.92.5270.1270.15329.97330.00108.22.2270.12270.12.48122.93930789112.498.82087.24643405.9-0.25.7236.648477087711168352.461341-0.0314793447ERROR:#NUM!TRUE# of TurnsPM 87/7087.070.0-48.0--31.767.18.5-146910133000315.3784.2247211.142097.03.220522.354.02.3259.0259.02329.97330.00108.22.1259.00259.02.33194.21234432222.5141.33297.26023350.2-0.110.7214.2682411659150342.58826673-0.0470335933ERROR:#NUM!126.7052087799PM 114/9311493-63--43885.4-2001720344000416.41332.4554755.172307.91.835250.139.22.0231.7231.75329.97330.00108.21.7231.72231.71.99475.68832964472.9204.78076.05163093.4-0.120.8126.70520877993187770.7423894-0.23099431798.302971954JrmsBpeak2232Single airgapSingle airgapAcoreVc + Vwin center legin center leg1720899[mW/cm3]of the coreof the corePsp,cu82.890302789163.54816251949.856136984142.366496843827.5433434252PM Core Forumlas

SeimensCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculatedDesignationw/bobbinw/bobbinw/bobbinw/bobbinNo bobbinNo bobbinCore #LwAwLwAwLwAwPM 50/39191.54231.84186.516268PM 62/49238.326345.03233.302389.11PM 74/59278.204516.12273.18569.8PM 87/70315.256784.16310.232849.6PM 114/93416.3641332.38411.341417.5

Effective magnetic length lm, core area Ac, and core volume Vm given in core specification sheet.

Mean winding length lw = 2(g +h)/2 = (g + h) ; no bobbinlw = = (g + h + 1.6) ; bobbin with 0.8 thick walls

Winding window area Aw = d(h - g)/2 ; no bobbinAw = (d - 1.6)(h - g -1.6)/2 ; bobbin with 0.8 mm thick walls

Winding volume = Vw = lwAw = (h^2 - g^2)/2

Surface area As 2 (a/2)^2 + 2(a/2)h = a^2/2 + ah

Potcore

TransferDataFerroxcubeFerroxcubeThermallyLimitedFluxLimitedMaximumPhillipsw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore # designation[mm][mm][mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0ERROR:#N/ACore # Dim. A Dim. B Dim. D1 Dim. D2 Dim. D3 Dim. D4Dim. H1Dim. H2LmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/AP7/45.51.67.45.83.01.44.22.810.07.070.014.62.231.4125.01066.960.9600.97.8599.8599.82329.97330.00108.28.6329.97330.08.620.020.71.40.35972209.0-0.20.121863.636363636495603435561.55240.0059894302ERROR:#NUM!TestPAirgapP9/56.52.09.37.53.92.15.43.612.510.1126.018.83.464.1200.9663.698.0515.37.2568.5568.53329.97330.00108.27.9329.97330.07.940.040.72.10.76082732.3-0.20.115153.015301530245922528985.41110.0077779954ERROR:#NUM!ERROR:#N/AP11/76.82.211.39.04.72.26.54.415.516.2251.022.74.8108.3294.5452.8143.6399.66.4520.3520.33329.97330.00108.26.9329.97330.06.910.080.82.51.34615876.7-0.20.19447.250280583617849917733.48720.0093433888ERROR:#NUM!TRUE# of TurnsP14/89.52.714.311.66.03.18.45.619.825.1495.029.08.7250.9479.4278.1233.7313.45.6478.0478.07329.97330.00108.26.0329.97330.06.050.191.04.03.34765158.9-0.20.26097.42846794647435570267.554650.0118640985ERROR:#NUM!ERROR:#N/AP18/1113.43.818.414.97.63.110.67.225.843.31120.036.718.1664.3781.7170.6381.1213.64.6418.3418.30329.97330.00108.24.9329.97330.04.880.571.26.89.64703936.9-0.20.33534.5370564772498472217.913080.0147955508ERROR:#NUM!JrmsBpeakP22/1315.03.822.017.99.44.413.49.231.563.42000.044.727.11211.41167.7114.2569.2177.34.2392.0391.99329.97330.00108.24.4329.97330.04.401.121.39.219.04339471.1-0.20.42413.96616002291165347943.905540.0179328725ERROR:#NUM!ERROR:#N/AERROR:#N/AP26/1618.03.825.521.211.55.416.011.037.693.93530.052.739.32071.11606.283.0783.0139.83.8360.8360.87329.97330.00108.23.8329.97330.03.842.101.511.635.73714249.0-0.20.51629.8770452125531220386.9019150.0210977665ERROR:#NUM!P30/1920.54.330.025.013.55.418.813.045.2137.06190.066.058.13834.62221.060.01082.7108.03.3329.8329.84329.97330.00108.23.3329.81329.83.303.901.814.866.33244887.0-0.30.61117.658962099249766849.4042220.022954206ERROR:#NUM!AcoreVc + VwP36/2226.24.936.229.916.25.421.714.653.2202.010700.074.372.45379.33121.842.71521.994.63.1315.0315.01329.97330.00108.23.0314.98315.03.096.411.917.3108.82690053.6-0.30.8793.7002911964125939775.2235380.0243762822ERROR:#NUM!ERROR:#N/AERROR:#N/AP42/2932.05.142.235.617.75.429.420.368.6265.018200.086.0140.012040.04786.227.92333.377.22.8293.3293.36329.97330.00108.22.6293.34293.42.7913.672.130.2232.13867531.6-0.21.4649.653142201984358478.35111330.0234212964ERROR:#NUM!P66/567.066.353.528.86.455.842.0123.0717.088300.0130.0400.052000.013814.49.76734.548.02.2248.6248.65329.97330.00108.21.9248.62248.62.2070.662.668.01199.63817046.7-0.24.1283.292023178816016836.7545194-0.0054901861ERROR:#NUM!

Single airgapSingle airgap[mW/cm3]in center legin center legPsp,cuof the coreof the core736.030212756PhillipsCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculated623.3585217746 designationw/bobbinw/bobbinw/bobbinw/bobbinNo bobbinNo bobbin472.6506853804Potcore FormulasCore #LwAwLwAwLwAw361.8862010917P7/416.330.7214.602.1513.823.92236.1199198853Effective lm, Ac, Vc given on core spec sheet.P9/520.412.0018.803.4117.906.48191.2737724607P11/724.023.7822.704.7721.519.46145.7815451588Mean winding length lw = 0.5(d2 + d3) ; without coil formerP14/830.148.0029.008.6527.6315.68107.9540320938P18/1137.8415.9636.7018.1035.3326.2890.3496999616lw = 0.5(d2 + d3 + 1.6) ; with coil former having walls 0.8 mm thickP22/1345.3726.2244.7027.1042.8639.1068.5918677456Winding window area Aw = 0.5 h2 (d2 - d3); without coil formerP26/1653.8538.0752.7039.3051.3453.3536.1672866906P30/1962.9656.4366.0058.1060.4574.75Aw = 0.5 (h2 - 1.6)(d2 - d3 - 1.6); with coil former having walls 0.8 mm thickP36/2274.8978.6574.3072.4072.38100.01P42/2986.19152.4186.00140.0083.68181.69P66/56131.72466.62130.00400.00129.21518.70Winding volume = Awlw

Surface area = 2 (d1/2)2 + h1d1 = 0.5(d1)2 + h1d1

PQ_Cores

TransferDataFerroxcubeFerroxcubeThermallyLimitedFluxLimitedMaximumPhillipsw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore # designation[mm][mm][mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0ERROR:#N/ACore # Dim. A Dim. B Dim. C Dim. D Dim. E Dim. FDim. GDim. HLmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/APQ20/1621.316.210.318.08.814.04.012.037.661.92330.04423.51034.01667.879.9813.0241.74.9436.7436.71329.97330.00108.25.2329.97330.05.231.131.119.4919.204573202.96836276-0.20.42472.51222494052.827440.0167734068ERROR:#NUM!TestPQAirgapPQ20/2021.320.214.318.08.814.04.012.045.762.62850.044361584.01920.269.4936.1211.14.6416.6416.61329.97330.00108.24.9329.97330.04.851.621.2013.4827.576446194.13780824-0.10.62444.81195279784.520890.0167545869ERROR:#NUM!ERROR:#N/APQ26/2027.320.211.522.512.019.06.015.545.0121.05820.056.4311748.42705.749.31319.0174.34.2389.6389.68329.97330.00108.24.4329.97330.04.352.421.3410.4141.172560781.2332367-0.40.41264.8319889479.8348540.0208410802ERROR:#NUM!TRUE# of TurnsPQ26/2527.324.716.122.512.019.06.015.554.3120.06530.056.447.52679.03065.643.51494.5162.34.0380.1380.12329.97330.00108.24.2329.97330.04.183.541.4015.3260.073818619.86124646-0.20.61275.4325228428.7682010.020892937ERROR:#NUM!ERROR:#N/APQ32/2033.020.611.527.513.522.05.519.055.9169.09440.066.744.82988.23549.837.61730.5139.23.8360.3360.37329.97330.00108.23.8329.97330.03.834.301.5213.2473.082331693.34470194-0.40.4905.6163954616.6731480.0208366773ERROR:#NUM!JrmsBpeakPQ32/3033.030.321.327.513.522.05.519.074.7167.012500.066.7533535.14492.929.72190.3136.63.7357.9357.96329.97330.00108.23.8329.97330.03.794.981.5415.4984.492749673.85484233-0.30.5916.4167883647.7763110.0209809194ERROR:#NUM!ERROR:#N/AERROR:#N/APQ35/3536.134.725.032.014.426.06.023.586.1190.016300.075.4187.214107.45742.623.22799.592.13.0312.0311.99329.97330.00108.23.0311.96312.03.0515.231.9144.05258.547417002.50034585-0.12.0852.0145090302.1211660.0218353359ERROR:#NUM!

AcoreVc + VwSingle airgapSingle airgapERROR:#N/AERROR:#N/Ain center legin center leg[mW/cm3]of the coreof the corePsp,cu271.2137334657233.0679734274PQ Core FormulasPhillipsCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculated187.6281530396 designationw/bobbinw/bobbinw/bobbinw/bobbinNo bobbinNo bobbin172.9834081769Core Dimensions:Core #LwAwLwAwLwAw145.1112193011PQ20/1644.58833.064423.542.07647.38141.927592743Magnetic parameters (lm, Ac,Vc) given on core specificaitons sheets.PQ20/2044.58848.26443642.07665.7887.0429581355Winding dimensions:PQ26/2056.67744.05556.43154.16560.375PQ26/2556.67764.52556.447.554.16584.525Mean turn length lw = 0.5(D+E) ; no coil formerPQ32/2066.88261.3866.744.864.3780.5lw = 0.5(D+E +1.6) ; with coil former with walls 0.8 mm thickPQ32/3066.882122.1466.75364.37149.1PQ35/3575.36187.272.848220Winding window area Aw = 0.5C(D-E) ; no coil formerarea Aw = 0.5[C - 1.6](D-E-1.6) ) ; with coil former with walls 0.8 mm thick

Windng volume Vw = lwAw

Surface Area As:

Exposed core area:Top and bottom = 2AF ; cutouts ignored.Left and right vertical = 2BFFront and back vertical = 2AB-2CDTotal exposed core surface = 2AF+2BF +2AB-2CD

Exposed winding area:Vertical surface = 2CD/2 -2CF = CD - 2CF = C(D - 2F)Top and bottom = 2(D/2)2 - 2FDTotal winding surface = CD - 2CF + 0.5D2 -2FD

Total surface area As = 2AF + 2BF + 2AB -2CD + + CD - 2CF + 0.5D2 - 2DF

RM_I_Cores

TransferDataFerroxcubeFerroxcubeThermallyLimitedFluxLimitedMaximumPhillipsbobbinbobbinInductanceDesiredInductanceCore RatingCore # designation[mm][mm][mm][mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW/cm3][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0ERROR:#N/ACore #Dim. ADim. BDim. CDim. D2Dim. D3Dim. EDim. H1Dim. H2LmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPsp,coreJrmsBacBpeakJrmsE_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/ARM4/I9.8114.47.953.95.810.4723.313.832219.88.4166.3552.9241.2269.5552.07.5582.3582.32329.97330.00108.28.2329.97330.08.240.14177544280.75.342.40699888211506822.199291-0.10.211090.250329380824598395472.51580.0077589199ERROR:#NUM!TestRMIAirgapRM5/I12.314.96.810.24.9610.46.323.224.857424.99.8244.0735.2181.3358.4438.26.7537.3537.31329.97330.00108.27.3329.97330.07.270.26224658510.85.504.4523030556596769.6830358-0.10.26171.18768328457616525872.58520.0096673273ERROR:#NUM!TRUEERROR:#N/ARM6S/I14.717.98.212.46.48.812.4829.237109030.815462.01074.0124.1523.6337.35.8490.5490.52329.97330.00108.26.3329.97330.06.300.51897682310.97.298.81095208015873455.68435381-0.20.34136.36363636363421744241.28970.0125046813ERROR:#NUM!# of TurnsRM7/I17.220.37.2514.757.259.313.48.43044.113253521735.01460.391.3711.9345.65.9494.6494.66329.97330.00108.26.4329.97330.06.380.87754414650.910.3414.89854475087042431.70422305-0.10.43470.41847041852408625897.339560.014080464ERROR:#NUM!ERROR:#N/ARM8/I19.723.211178.559.516.410.838.463244042311302.01848.872.1901.3240.94.9436.1436.19329.97330.00108.25.2329.97330.05.221.51507543121.112.5025.72226047115951022.64321327-0.20.52429.29292929291180171889.998730.0162437644ERROR:#NUM!JrmsBpeakRM10/I24.728.513.521.210.910.918.612.444.696.6431052.342.72233.22702.449.31317.4201.34.5409.7409.79329.97330.00108.24.7329.97330.04.722.89371357191.215.5749.12815077964841006.12410123-0.20.61584.3214756258501923300.9348520.0197867338ERROR:#NUM!ERROR:#N/AERROR:#N/ARM12/I29.837.416.12512.812.925.516.856.6146834061754575.04295.331.02093.9162.14.0380.0380.00329.97330.00108.24.2329.97330.04.186.79349126811.424.18115.33679994564992556.83786125-0.20.91048.2565379826219691434.9892270.0210003432ERROR:#NUM!RM14/I34.742.21929151730.120.87019813900711117881.05845.622.82849.8130.83.6352.6352.63329.97330.00108.23.7329.97330.03.6912.05371920791.631.64204.64255358744820502.34835605-0.21.3772.9568411387119422309.7491320.0215383883ERROR:#NUM!AcoreVc + VwERROR:#N/AERROR:#N/ASingle airgapSingle airgap[mW/cm3]in center legin center legPsp,cuof the coreof the coreDimensions:RM/I Core Formulas671.5333215732PhillipsCalculatedCalculatedFerroxcubeFerroxcubeCalculatedCalculated522.6927276279 designationBobbinBobbinbobbinbobbinno BobbinNo bobbin392.5475285376Core #LwAwLwAwLwAw403.0922666712RM4/I21.11656.61519.88.418.604514.175270.1757165537RM5/I26.2198.69524.99.823.70716.695220.9445873534RM6S/I32.02814.0830.81529.51624172.7985492514Core parameters:RM7/I37.05220.06352134.5431.5135.0355413589RM8/I42.625531.51423140.113545.63RM10/I52.90946.9852.342.750.39763.86Mean magnetic path length lm given in core spec sheet.RM12/I61.85880.56617559.346102.48Core area Ac given in core spec sheet.RM14/I71.592119.047111169.08145.6Core volume Vm given in core spec sheet.

Winding parameters: Coil former assumed to have 0.8mm thick walls

Mean turn length lw = 2(d2+d3)/4 = 1.57(d2+d3) no coil formerlw = 2(d2+d3 +1.6)/4 = 1.57(d2+d3 + 1.6) with coil former

Winding window area Aw = 0.5(d2-d3)h2 no coil formerAw = (0.5d2 - 0.5d3 -0.8)(h2 - 1.6) with coil formerWinding volume Vw = lwAw

Core area - top and bottom surfaces : 2{ a^2 - shaded areas}

shaded areas (top only) = 2{[a/2]^2- c^2/4} + 2{[a/2]^2 - {0.7a-0.5b}^2}= a^2/2 - c^2/2 + a^2/2 -0.5[2a^2 - 2.83ab + b^2] = 1.414ab -0.5b^2 - 0.5c^2=1.5a^2+0.5b^2-0.5c^2-ab/1.414total top and bottom surfaces = total top and bottom surfaces = 2[1.414ab -0.5b^2 - 0.5c^2]= 2.83ab - b^2 - c^2

Vertical core surfaces: top viewside view

vertical surface area = 4(.707b-.5a)h1+ 2(1.414a-b)h1 +4(0.5(a-d2)h2 +4e (h1 - h2)= 0.83h1(a+b) + 2h2(a-d2) +4e(h1-h2)

Exposed core surface area = 2.83ab - b2 - c2 + 0.83h1(a+b) + 2h2(a-d2) +4e(h1-h2)

Exposed winding surface area:

vertical exposed winding surface = 0.5d2h2

top and bottom exposed surfaces =2[ 0.5[d2/2]^2 - 0.5c^2] = 0.25[d2]^2 - c^2Total exposed winding surface = 1.57d2h2 + 0.79[d2]^2 - c^2

As = 2.83ab - b^2 - c^2 + 0.83h1(a+b) + 2h2(a-d2) +4e(h1-h2) + 1.57d2h2 + 0.79[d2]^2 - c^2As = 2.83ab - b^2 - 2c^2 + + 0.83h1(a+b) + 2h2(a-d2) +4e(h1-h2) + 1.57d2h2 + 0.79[d2]^2

side view

U_CORES

TransferDatacalculatedcalculatedThermallyLimitedFluxLimitedMaximumw/bobbinw/bobbinInductanceDesiredInductanceCore RatingCore #Phillips designation[mm][mm][mm][mm][mm][mm][mm2][mm3][mm][mm2][mm3][mm2][C/W][mW][mw/cm3][A/mm2][mT][mT][mT][mT][mW][A/mm2][mT][mT][A/mm2][milliJoules][mm2]max. # turns[H][mm][mm]0.0ERROR:#N/ACore #Dim. ADim. BDim. CDim. DDim. ELmAcVcLwAwVwAsRqPt @ DTPspJrmsBacBpeakBacBpeakPcoreJrmsBacBpeakJrms E_ratingAcuNmaxLmaxEtabAirgap gNEta'b'Airgap gCriteriaERROR:#N/AU/10/8/3108.22.954.3538.48.4323.030.026.8803.2824161.8402356.76.0500.1500.1330.0330.0108.26.5330.0330.06.490.220.9013.433.6848023221.6111548-0.05465558530.621833555718219.69696969766390564504.03850.0114021829ERROR:#NUM!TestUAirgapU/15/11/615.411.456.256.45.45232.31680.044.347.52105.9178274.8869229.54.8428.9428.9330.0330.0108.25.1330.0330.05.081.161.1518.6519.6817350353.7488984-0.16047051580.80921298864738.24936673234489881986.251860.0217929428ERROR:#NUM!FALSEERROR:#N/AU20/16/720.815.67.58.36.46856.03800.054.478.84285.4299144.61458180.44.3394.3394.4330.0330.0108.24.4330.0330.04.442.911.3127.0149.4114520733.0426553-0.1892255451.19127219052732.95454545461493567179.798920.0272744825ERROR:#NUM!# of TurnsU25/16/625.415.96.49.512.783.640.33380.070.2198.913970.3456429.22225128.23.6350.1350.2330.0330.0108.23.7330.0330.03.654.351.6056.0373.7742146376.4414768-0.04982327673.47825958513797.65395894432884023522.804150.024399245ERROR:#NUM!ERROR:#N/AU25/20/1324.819.612.711.48.488.2104.09180.073.0153.911241.7518625.72528123.83.5345.9345.9330.0330.0108.23.6330.0330.03.588.501.6342.48144.3412335099.8011048-0.2155633961.94741988691471.5909090909432947691.5130320.0344674671ERROR:#NUM!JrmsBpeakU/30/25/1631.325.31614.910.5111161.017900.090.6264.123935.4838115.9408697.73.1318.4318.5330.0330.0108.23.1318.4318.53.1419.141.8664.01324.9312473707.6293099-0.20170357423.2450098706985.0178134715193915224.7232490.0364289122ERROR:#NUM!ERROR:#N/AERROR:#N/AU/33/22/933.322.29.412.714.311086.59490.087.6311.227251.0767117.43740101.83.2323.1323.1330.0330.0108.23.2323.1323.13.2112.551.8277.01213.0727581020.6492751-0.07730100424.77040008191807.1350841169652895125.7229290.0329376522ERROR:#NUM!U/67/27/1467.32714.312.738.8173204.035200.0183.8884.5162567.7247705.41207561.12.5270.4270.4330.0330.0108.22.2270.4270.42.4854.532.35169.52925.7030874195.4646298-0.0457238348ERROR:#NUM!915.6125731084167501015.0577010.0381472601ERROR:#NUM!AcoreVc + VwU/93/76/169376164836.2354448.0159000.0207.33308.8686006.9619612.23020635.71.9224.4224.4330.0330.0108.21.6224.4224.41.90284.403.07485.204828.4648599850.32974830.0234787459ERROR:#NUM!502.438282883750332064.1588390.0257268233ERROR:#NUM!ERROR:#N/AERROR:#N/AU/93/52/309352302436.2258840.0217000.0235.31619.2381043.1505552.62464641.22.0235.8235.8330.0330.0108.21.7235.8235.82.04294.432.86254.944998.6212941476.1905295-0.12850456436.5330514428255.009747435812945053.2143668-0.128436780636.5778105008U/93/76/309376304836.2354840.0297000.0235.33308.8778653.3698351.93404431.61.8215.0215.1330.0330.0108.21.4215.0215.11.79480.933.26456.558165.0825444659.2616512-0.0079650103ERROR:#NUM!279.576341334215548969.3467229-0.0873680772ERROR:#NUM!U/100/48/25101.647.525.422.150.8270645.0174000.0266.02101.6558956.1577852.32817038.42.0230.1230.1330.0330.0108.21.6230.1230.11.97276.562.96319.544695.3721663673.3980337-0.0449403912ERROR:#NUM!340.276631340323074580.6888616-0.0359801024ERROR:#NUM!U/100/57/25101.657.125.431.750.8308645.0199000.0266.03057.7813267.9668562.03259232.21.8216.3216.3330.0330.0108.21.5216.3216.31.80346.273.23425.545878.7630708513.0052987-0.001778603ERROR:#NUM!361.930777326326104031.6064991-0.0200135202ERROR:#NUM!

Each U-coreEach U-coreleg has gapleg has gap[mW/cm3]of 0.5g of 0.5g Psp,cu417.3252700054U core dimensions255.9441832585195.0671734392131.9268477396126.637252098494.245777060699.655145585750.0292018305Mean core length lc = 4D + 2E + 2{(A-E)/8 + (B-D)/4} = 4D + 2E + 0.25[(A-E) +2(B-D)]24.304813486829.443517559820.625929058526.800343509821.1083244203coil formercoil formerFerroxcubeFerrooxcubePhillips designationcalculatedcalculatedbobbinbobbinNo bobbinNo bobbinCore #lwAwLwAwLwAwU/10/8/330.026.82927.425.10943.5U/15/11/644.347.5248.737.339.45669.12U20/16/754.478.8449.496106.24U25/16/670.2198.965.378241.3U25/20/1373.0153.9268.176191.52U/30/25/1690.6264.185.77312.9U/33/22/987.6311.2282.702363.22U/67/27/14183.8884.52178.932985.52U/93/76/16207.33308.8202.4683475.2U/93/52/30235.31619.2230.4681737.6Core Area Ac = 0.5C(A-E)U/93/76/30235.33308.8230.4683475.2U/100/48/25266.02101.56261.1122245.36Core Volume Vc = 2BAC- 2DEC lc AcU/100/57/25266.03057.72261.1123220.72Mean turn length lwTwo section windingSingle section windinglw = 2(C+2mm) + 2{0.5(A-E) +2mm} + 2{0.25(E-3mm)} = 2C +(A-E) + 8mm + 0.5(E-3mm)With coil former:lw = 2 [(E-1mm)/2] + 2 {0.5(A-E) + 2mm} + 2(C+2mm) = (E-1mm) + (A-E) +2C + 8mmWithout coil former: lw = E +A-E+2C

Winding Area AwWith coil former:Without coil former:Single section Aw = (E-1mm)(2D-2mm)Aw = 2DETwo section Aw =(2D-2mm)(E-3mm)

Winding volume Vw lwAwSurface area As - single section winding

Exposed surface area of core As,cExposed core surface bottom and top = 2BC + 2(B-D)C = 4BC - 2DCExposed core surface left and right = 2ACExposed core surface front and back= 4AB 4DE-2D(A-E)/2*2 = 4AB 4DE 2AD + 2DE = 4AB 2DE 2AD

Summing three terms togetherAs,c = 4BC 2DC+2AC+4AB-2DE-2AD = 4AB+2AC-2AD-2DE+4BC-2CD

Exposed surface area of winding As,wTop and bottom = (2)(4)(0.25)(E)^2 + (4)(0.5)(A-E)E + 2CE = E^2(6.3-2) + 2AE + 2CE = 2.3E^2 + 2AE +2CE

Vertical surface = 2E(2D) +2(2D)(0.5)(A-E) + C(2D) = 4DE + 2AD-2DE+2CD = 10.6DE + 2AD +2CD

As,w = 2.3E^2 +2AE+2CE+ 10.6DE +2AD +2CDAs = As,c + As,w = 4AB+2AC-2AD-2DE+4BC-2CD+ 2.3E2 +2AE+2CE+ 10.6DE +2AD +2CD

As = 4AB + 2AC + 8.6DE + 4BC +2.3E2 + 2AE + 2CE