Datasheet

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4 - 4
MCO 500
Fig.10 Transient thermal impedance
junction to heatsink (per thyristor)
0 300 600 900 1200
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
t
Z
thJK
s
t
10
-3
10
-2
10
-1
10
0
10
1
10
2
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
K/W
Z
thJC
I
RMS
P
tot
0 25 50 75 100 125 150
A
6xMCO500
Circuit
W3
10
-3
10
-2
10
-1
10
0
10
1
10
2
0.00
0.02
0.04
0.06
0.08
0.10
0.12
DC
180°
120°
60°
30°
DC
180°
120°
60°
30°
°C
T
A
W
K/W
s
R
thKA
K/W
0.01
0.02
0.03
0.045
0.06
0.08
0.12
Fig. 9 Transient thermal impedance
junction to case (per thyristor)
Fig. 8 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
R
thJC
for various conduction angles d:
d R
thJC
(K/W)
DC 0.072
180° 0.0768
120° 0.081
60° 0.092
30° 0.111
Constants for Z
thJC
calculation:
iR
thi
(K/W) t
i
(s)
1 0.0035 0.0054
2 0.0186 0.098
3 0.0432 0.54
4 0.0067 12
R
thJK
for various conduction angles d:
d R
thJK
(K/W)
DC 0.096
180° 0.1
120° 0.105
60° 0.116
30° 0.135
Constants for Z
thJK
calculation:
iR
thi
(K/W) t
i
(s)
1 0.0035 0.0054
2 0.0186 0.098
3 0.0432 0.54
4 0.0067 12
5 0.024 12