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IRF40DM229 数据表(PDF) 6 Page - Infineon Technologies AG |
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IRF40DM229 数据表(HTML) 6 Page - Infineon Technologies AG |
6 / 12 page IRF40DM229 6 2016-3-2 Fig 14. Maximum Effective Transient Thermal Impedance, Junction-to-Case Fig 16. Maximum Avalanche Energy vs. Temperature Notes on Repetitive Avalanche Curves , Figures 15, 16: (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 23a, 23b. 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 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) = T/ ZthJC Iav = 2T/ [1.3·BV·Zth] EAS (AR) = PD (ave)·tav 1E-006 1E-005 0.0001 0.001 0.01 0.1 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 j = 25°C and Tstart = 125°C. Allowed avalanche Current vs avalanche pulsewidth, tav, assuming Tj = 125°C and Tstart =25°C (Single Pulse) 25 50 75 100 125 150 Starting TJ , Junction Temperature (°C) 0 10 20 30 40 50 60 70 80 TOP Single Pulse BOTTOM 1.0% Duty Cycle ID = 97A Fig 15. Avalanche Current vs. Pulse Width |
类似零件编号 - IRF40DM229 |
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类似说明 - IRF40DM229 |
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