Fig. 5 Three phase rectifier bridge:
Power dissipation versus direct
output current and ambient
temperature
Circuit
B 6
3 x PSKD 310
0.15
K/W
Fig. 6 Transient thermal impedance
junction to case (per diode)
30°
DC
RthJC for various conduction angles d:
ZthJC
d
RthJC (K/W)
0.10
0.05
DC
180°
120°
60°
0.129
0.131
0.132
0.132
0.133
30°
Constants for ZthJC calculation:
i
Rthi (K/W)
ti (s)
1
2
3
0.0035
0.0165
0.1091
0.0099
0.168
0.456
0
0.00
10-3
10-2
10-1
100
101
102
s
t
0.20
K/W
Fig. 7 Transient thermal impedance
junction to heatsink (per diode)
30°
DC
RthJK for various conduction angles d:
ZthJK
0.15
0.10
0.05
d
RthJK (K/W)
DC
180°
120°
60°
0.169
0.171
0.172
0.172
0.173
30°
Constants for ZthJK calculation:
i
Rthi (K/W)
ti (s)
1
2
3
4
0.0035
0.0165
0.1091
0.04
0.0099
0.168
0.456
1.36
0
0.00
10-3
10-2
10-1
100
101
s
102
t
POWERSEM GmbH, Walpersdorfer Str. 53
D - 91126 Schwabach
2003 POWERSEM reserves the right to change limits, test conditions and dimensions
Phone: 09122 - 9764 - 0 FAX: 09122 - 9764 - 20
POWERSEM [ POWERSEM GMBH ]
