Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
Circuit
W 3
3xPSKT 220 or
3xPSKH 220
0.15
K/W
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
30°
DC
ZthJC
RthJC for various conduction angles d:
d
DC
RthJC (K/W)
0.10
0.05
0.139
0.141
0.142
0.142
0.143
180°C
120°C
60°C
30°C
Constants for ZthJC calculation:
i
Rthi (K/W)
ti (s)
1
2
3
0.0037
0.0177
0.1175
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. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
30°
DC
ZthJK
RthJK for various conduction angles d:
0.15
0.10
0.05
d
RthJK (K/W)
DC
0.179
0.181
0.182
0.183
0.183
180°C
120°C
60°C
30°C
Constants for ZthJK calculation:
i
Rthi (K/W)
ti (s)
1
2
3
4
0.0037
0.0177
0.1175
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
2002 POWERSEM reserves the right to change limits, test conditions and dimensions
Phone: 09122 - 9764 - 0 FAX: 09122 - 9764 - 20