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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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IRF7737L2TR1PBF Fiches technique(PDF) 6 Page - International Rectifier |
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IRF7737L2TR1PBF Fiches technique(HTML) 6 Page - International Rectifier |
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6 / 10 page  6 www.irf.com IRF7737L2TR/TR1PbF Fig 17. Maximum Avalanche Energy Vs. Temperature Notes on Repetitive Avalanche Curves , Figures 16, 17: (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 18a, 18b. 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 16, 17). tav = Average time in avalanche. D = Duty cycle in avalanche = tav ·f ZthJC(D, tav) = Transient thermal resistance, see figure 15) PD (ave) = 1/2 ( 1.3·BV·Iav) = DT/ ZthJC Iav = 2DT/ [1.3·BV·Zth] EAS (AR) = PD (ave)·tav Fig 18b. Unclamped Inductive Waveforms Fig 18a. Unclamped Inductive Test Circuit tp V(BR)DSS IAS Fig 19a. Gate Charge Test Circuit Fig 19b. Gate Charge Waveform VDS 90% 10% VGS td(on) tr td(off) tf Fig 20a. Switching Time Test Circuit Fig 20b. Switching Time Waveforms Vds Vgs Id Vgs(th) Qgs1 Qgs2 Qgd Qgodr RG IAS 0.01 Ω tp D.U.T L VDS + - VDD DRIVER A 15V 20V VGS 1K VCC DUT 0 L S 20K VDS Pulse Width ≤ 1 µs Duty Factor ≤ 0.1 % RD VGS RG D.U.T. 10V + - VDD 25 50 75 100 125 150 175 Starting TJ , Junction Temperature (°C) 0 20 40 60 80 100 120 TOP Single Pulse BOTTOM 1.0% Duty Cycle ID = 94A |
Numéro de pièce similaire - IRF7737L2TR1PBF |
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