Moteur de recherche de fiches techniques de composants électroniques |
|
IRFB7440PBF Fiches technique(PDF) 6 Page - International Rectifier |
|
IRFB7440PBF Fiches technique(HTML) 6 Page - International Rectifier |
6 / 10 page IRFB7440PbF 6 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback February 19, 2015 Fig 14. Maximum Effective Transient Thermal Impedance, Junction-to-Case Fig 15. Typical Avalanche Current vs.Pulsewidth Fig 16. Maximum Avalanche Energy vs. Temperature Notes on Repetitive Avalanche Curves , Figures 14, 15: (For further info, see AN-1005 at www.irf.com) 1. Avalanche failures assumption: Purely a thermal phenomenon and failure occurs at a temperature far in excess of Tjmax. This is validated for every part type. 2. Safe operation in Avalanche is allowed as long asTjmax is not exceeded. 3. Equation below based on circuit and waveforms shown in Figures 16a, 16b. 4. PD (ave) = Average power dissipation per single avalanche pulse. 5. BV = Rated breakdown voltage (1.3 factor accounts for voltage increase during avalanche). 6. Iav = Allowable avalanche current. 7. ΔT = Allowable rise in junction temperature, not to exceed Tjmax (assumed as 25°C in Figure 14, 15). tav = Average time in avalanche. D = Duty cycle in avalanche = tav ·f ZthJC(D, tav) = Transient thermal resistance, see Figures 13) PD (ave) = 1/2 ( 1.3·BV·Iav) = DT/ ZthJC Iav = 2DT/ [1.3·BV·Zth] EAS (AR) = PD (ave)·tav 1E-006 1E-005 0.0001 0.001 0.01 0.1 1 t1 , Rectangular Pulse Duration (sec) 0.001 0.01 0.1 1 10 0.20 0.10 D = 0.50 0.02 0.01 0.05 SINGLE PULSE ( THERMAL RESPONSE ) Notes: 1. Duty Factor D = t1/t2 2. Peak Tj = P dm x Zthjc + Tc 1.0E-06 1.0E-05 1.0E-04 1.0E-03 1.0E-02 1.0E-01 tav (sec) 0.1 1 10 100 1000 Allowed avalanche Current vs avalanche pulsewidth, tav, assuming ΔΤ j = 25°C and Tstart = 150°C. Allowed avalanche Current vs avalanche pulsewidth, tav, assuming ΔTj = 150°C and Tstart =25°C (Single Pulse) 25 50 75 100 125 150 175 Starting TJ , Junction Temperature (°C) 0 50 100 150 200 TOP Single Pulse BOTTOM 1.0% Duty Cycle ID = 100A |
Numéro de pièce similaire - IRFB7440PBF_15 |
|
Description similaire - IRFB7440PBF_15 |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |