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IRFS3006-7PPBF Datasheet, PDF (5/9 Pages) International Rectifier – HEXFET Power MOSFET | |||
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IRFS3006-7PPbF
1
D = 0.50
0.1
0.20
0.10
0.05
0.01
0.001
0.02
0.01
SINGLE PULSE
( THERMAL RESPONSE )
0.0001
1E-006
1E-005
ÏJ ÏJ
Ï1 Ï1
R1R1
R2R2
Ï2 Ï2
R3R3
Ï3 Ï3
R4R4
ÏCÏ
Ri (°C/W)
0.0062
0.0431
Ïi (sec)
0.000005
0.000045
Ï4 Ï4
0.1462 0.001067
Ci= Ïi/Ri
Ci i/Ri
0.2047 0.010195
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
0.0001
0.001
0.01
0.1
t1 , Rectangular Pulse Duration (sec)
Fig 13. Maximum Effective Transient Thermal Impedance, Junction-to-Case
1000
Duty Cycle = Single Pulse
100
0.01
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming âTj = 150°C and
Tstart =25°C (Single Pulse)
0.05
0.10
10
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming âΤ j = 25°C and
Tstart = 150°C.
1
1.0E-06
1.0E-05
1.0E-04
1.0E-03
1.0E-02
tav (sec)
Fig 14. Typical Avalanche Current vs.Pulsewidth
1.0E-01
350
Notes on Repetitive Avalanche Curves , Figures 14, 15:
TOP
Single Pulse
(For further info, see AN-1005 at www.irf.com)
300
BOTTOM 1.0% Duty Cycle
1. Avalanche failures assumption:
ID = 168A
Purely a thermal phenomenon and failure occurs at a temperature far in
250
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.
200
4. PD (ave) = Average power dissipation per single avalanche pulse.
5. BV = Rated breakdown voltage (1.3 factor accounts for voltage increase
during avalanche).
150
6. Iav = Allowable avalanche current.
7. âT = Allowable rise in junction temperature, not to exceed Tjmax (assumed as
100
25°C in Figure 14, 15).
tav = Average time in avalanche.
50
D = Duty cycle in avalanche = tav ·f
ZthJC(D, tav) = Transient thermal resistance, see Figures 13)
0
25 50 75 100 125 150 175
Starting TJ , Junction Temperature (°C)
PD (ave) = 1/2 ( 1.3·BV·Iav) = DT/ ZthJC
Iav = 2DT/ [1.3·BV·Zth]
EAS (AR) = PD (ave)·tav
Fig 15. Maximum Avalanche Energy vs. Temperature
www.irf.com
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