MEK 350-02 DA
μ C V = 100V
400
A
350
3.0
2.5
T VJ = 100 ° C
R
60
A
50
T VJ = 100 ° C
V R = 100V
I F
300
250
200
T VJ =125 ° C
T VJ =25 ° C
Q r
2.0
1.5
I F = 700A
I F = 350A
I RM
40
30
I F = 700A
I F = 350A
I F = 175A
I F = 175A
150
100
50
0
1.0
0.5
0.0
20
10
0
0.0
0.4
0.8
1.2 V
10
100
A/ s 1000
0
200
400
600
A/ s
800 1000
V F
Fig. 1 Forward current I F versus
voltage drop V F per leg
-di F /dt
Fig. 2 Reverse recovery charge Q r
versus -di F /dt
-di F /dt
Fig. 3 Peak reverse current I RM
versus -di F /dt
2.0
1.5
K f
Q r
I RM
t rr
280
ns
240
200
T VJ = 100 ° C
V R = 100V
I F = 700A
I F = 350A
I F = 175A
100
V
90
80
V FR
70
60
t fr
T VJ = 125 ° C
I F = 350A
V FR
4.5
μ s
4.0
3.5
3.0
2.5
t fr
1.0
50
160
40
30
2.0
1.5
0.5
0.0
120
80
20
10
0
1.0
0.5
0.0
0
50
100
° C 150
0
200
400
600
A/ s
800 1000
0
400
800 1200 A/ s
T VJ
Fig. 4 Dynamic parameters Q r , I RM
versus junction temperature T VJ
0.25
K/W
-di F /dt
Fig. 5 Recovery time t rr versus -di F /dt
di F /dt
Fig. 6 Peak forward voltage V FR and t fr
versus di F /dt
Constants for Z thJS calculation:
i
R thi (K/W)
t i (s)
0.20
0.15
thJS
Z thJH
1
2
3
4
0.002
0.008
0.054
0.164
0.08
0.024
0.112
0.464
0.10
0.05
0.00
0.001 0.01 0.1
Fig. 7 Transient thermal impedance junction to heatsink
? 2000 IXYS All rights reserved
1 s
t
10
2-2
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