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| L016 Datasheet, PDF (3/3 Pages) IXYS Corporation – High Power Diode Modules | |||
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MDO 500
5000
W
4500
Ptot 4000
3500
3000
2500
2000
1500
1000
500
0
0
Circuit
B6
6xMDO500
300 600 900 1200 1500A 0
IdAVM
RthKA K/W
0.01
0.02
0.03
0.045
0.06
0.08
0.12
Fig. 6 Three phase rectifier bridge:
Power dissipation versus direct
output current and ambient
temperature
25
50
75
100 125 °C 150
TA
0.12
Fig. 7 Transient thermal impedance
K/W
junction to case
0.10
RthJC for various conduction angles d:
0.08
ZthJC
0.06
0.04
0.02
d
RthJC (K/W)
DC
0.072
180°
0.0768
30°
120°
0.081
60°
60°
0.092
120°
180°
30°
0.111
DC
Constants for Z calculation:
thJC
i
Rthi (K/W)
ti (s)
0.00
1
0.0035
0.0054
10-3
10-2
10-1
100
101
s
102
2
0.0186
0.098
t
3
0.0432
0.54
4
0.0067
12
0.14
Fig. 8 Transient thermal impedance
K/W
junction to heatsink
0.12
ZthJK 0.10
RthJK for various conduction angles d:
d
RthJK (K/W)
0.08
DC
0.096
180°
0.1
0.06
120°
0.105
30°
60°
0.116
0.04
60°
30°
0.135
120°
0.02
180°
DC
Constants for ZthJK calculation:
i
Rthi (K/W)
ti (s)
0.00
1
0.0035
0.0054
10-3
10-2
10-1
100
101
s
102
2
0.0186
0.098
t
3
0.0432
0.54
4
0.0067
12
5
0.024
12
© 2000 IXYS All rights reserved
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