MDD 220
Fig. 5 Three phase rectifier bridge:
Power dissipation versus direct
output current and ambient
temperature
0.15
Fig. 6 Transient thermal impedance
Z thJC
K/W
30°
DC
junction to case (per diode)
R thJC for various conduction angles d:
0.10
0.05
d
DC
180 °
120 °
60 °
30 °
R thJC (K/W)
0.129
0.131
0.132
0.132
0.133
Constants for Z thJC calculation:
i
1
R thi (K/W)
0.0035
t i (s)
0.0099
0.00 0
10 -3
10 -2
10 -1
10 0
10 1
t
s
10 2
2
3
0.0165
0.1091
0.168
0.456
0.20
Fig. 7 Transient thermal impedance
Z thJK
K/W
30°
DC
junction to heatsink (per diode)
R thJK for various conduction angles d:
0.15
0.10
d
DC
180 °
120 °
60 °
30 °
R thJK (K/W)
0.169
0.171
0.172
0.172
0.173
0.05
Constants for Z thJK calculation:
i
1
R thi (K/W)
0.0035
t i (s)
0.0099
0.00
2
0.0165
0.168
10 -3
10 -2
10 -1
10 0
10 1
s
10 2
3
0.1091
0.456
t
4
0.04
1.36
IXYS reserves the right to change limits, test conditions and dimensions
? 2004 IXYS All rights reserved
3-3
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