3000
W
2500
P
tot
2000
R
thKA
K/W
1500
0.02
0.04
0.07
0.1
0.15
0.2
0.3
Circuit
W3
3xPSKH 312 or
3xMCC312 or
3xPSKT 312
3xMCD312
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
1000
500
0
0
200
400
600
A
I
RMS
0
25
50
75
100
125 °C 150
T
A
0.20
K/W
0.15
Z
thJC
0.10
30°
60°
120°
180°
DC
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
R
thJC
for various conduction angles d:
d
DC
180°
120°
60°
30°
R
thJC
(K/W)
0.120
0.128
0.135
0.153
0.185
0.05
Constants for Z
thJC
calculation:
i
R
thi
(K/W)
0.0058
0.031
0.072
0.0112
t
i
(s)
0.00054
0.098
0.54
12
1
2
3
4
0.00
10
-3
10
-2
10
-1
10
0
10
1
t
s
10
2
0.25
K/W
0.20
Z
thJK
0.15
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
R
thJK
for various conduction angles d:
d
DC
180°
120°
60°
30°
R
thJK
(K/W)
0.160
0.168
0.175
0.193
0.225
0.10
0.05
30°
60°
120°
180°
DC
Constants for Z
thJK
calculation:
i
R
thi
(K/W)
0.0058
0.031
0.072
0.0112
0.04
t
i
(s)
0.00054
0.098
0.54
12
12
1
2
3
4
5
0.00
10
-3
10
-2
10
-1
10
0
10
1
t
s
10
2
POWERSEM GmbH, Walpersdorfer Str. 53
2003 POWERSEM reserves the right to change limits, test conditions and dimensions
D - 91126 Schwabach
Phone: 09122 - 9764 - 0 FAX: 09122 - 9764 - 20
POWERSEM [ POWERSEM GMBH ]
