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IRFB4310PBF Datasheet(PDF) 5 Page - International Rectifier |
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IRFB4310PBF Datasheet(HTML) 5 Page - International Rectifier |
5 / 12 page IRF/B/S/SL4310PbF www.irf.com 5 1E-006 1E-005 0.0001 0.001 0.01 0.1 t1 , Rectangular Pulse Duration (sec) 0.0001 0.001 0.01 0.1 1 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 Fig 13. Maximum Effective Transient Thermal Impedance, Junction-to-Case Fig 14. Typical Avalanche Current vs.Pulsewidth Fig 15. Maximum Avalanche Energy vs. Temperature Ri (°C/W) τi (sec) 0.1962 0.00117 0.2542 0.016569 τ J τ J τ 1 τ 1 τ 2 τ 2 R 1 R 1 R 2 R 2 τ τ C Ci= i /Ri Ci= τi/Ri 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 as neither Tjmax nor Iav (max) is 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. ∆T = Allowable rise in junction temperature, not to exceed T jmax (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 = 2 DT/ [1.3·BV·Zth] EAS (AR) = PD (ave)·tav 25 50 75 100 125 150 175 Starting TJ , Junction Temperature (°C) 0 200 400 600 800 1000 TOP Single Pulse BOTTOM 1% Duty Cycle ID = 75A 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 0.05 Duty Cycle = Single Pulse 0.10 Allowed avalanche Current vs avalanche pulsewidth, tav, assuming ∆Τ j = 25°C and Tstart = 150°C. 0.01 Allowed avalanche Current vs avalanche pulsewidth, tav, assuming ∆Tj = 150°C and Tstart =25°C (Single Pulse) |
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