IRFS4310Z 데이터 시트보기 (PDF) - Kersemi Electronic Co., Ltd.
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IRFS4310Z Datasheet PDF : 10 Pages
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AUIRFS4310Z
1
D = 0.50
0.20
0.1
0.10
0.05
0.02
0.01
0.01
SINGLE PULSE
( THERMAL RESPONSE )
0.001
1E-006
1E-005
0.0001
J
J
1
1
R1R1
Ci= iRi
Ci iRi
R2R2
2 2
R3R3
R4
R4
Ri (°C/W) (sec)
C 0.018756 0.000007
3
4 0.159425 0.000117
3
4
0.320725 0.001817
0.101282 0.011735
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
0.001
0.01
0.1
t1 , Rectangular Pulse Duration (sec)
Fig 13. Maximum Effective Transient Thermal Impedance, Junction-to-Case
100
Duty Cycle = Single Pulse
0.01
10
0.05
0.10
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming Tj = 150°C and
Tstart =25°C (Single Pulse)
1 Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming j = 25°C and
Tstart = 150°C.
0.1
1.0E-06
1.0E-05
1.0E-04
1.0E-03
tav (sec)
Fig 14. Typical Avalanche Current vs.Pulsewidth
1.0E-02
1.0E-01
140
TOP
Single Pulse
120
BOTTOM 1% Duty Cycle
ID = 75A
100
80
60
40
20
0
25
50
75
100 125 150 175
Starting TJ , Junction Temperature (°C)
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. T = Allowable rise in junction temperature, not to exceed Tjmax (assumed as
25°C in Figure 14).
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
Fig 15. Maximum Avalanche Energy vs. Temperature
2014-8-27
6
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