PSKT170 Datasheet, PDF (4/4 Pages) Powersem GmbH – Thyristor/Diode Modules

2000
P_tot
W
1500
1000
500
Circuit
W3
3³x^xM^PSC^KC^T1¹7⁷0⁰
R_thKA K/W
0.04
0.06
0.08
0.1
0.15
0.2
0.3
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
0
0
100 200 300 400 A 0
I_RMS
25
50
75
100
125 °C 150
T_A
0.25
K/W
Z_thJC
0.20
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
R_thJC for various conduction angles d:
0.15
d
R_thJC (K/W)
DC
0.160
180°
0.171
0.10
30°
60°
120°
0.180
120°
60°
0.203
180°
30°
0.247
DC
0.05
Constants for Z_thJC calculation:
i
R_thi (K/W)
t_i (s)
0.00
10^-3
10^-2
10^-1
10⁰
10¹
s
10²
1
0.0077
0.00054
t
2
0.0413
0.098
3
0.096
0.54
4
0.0149
12
0.30
K/W
0.25
Z_thJK
0.20
0.15
0.10
0.05
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
R_thJK for various conduction angles d:
d
R_thJK (K/W)
DC
0.200
180°
0.211
30°
120°
0.220
60°
60°
0.243
120°
180°
30°
0.287
DC
Constants for Z_thJK calculation:
0.00
i
R_thi (K/W)
t_i (s)
10^-3
10^-2
10^-1
10⁰
10¹
s
10²
1
0.0077
0.00054
t
2
0.0413
0.098
3
0.096
0.54
4
0.0149
12
5
0.04
12
POWERSEM GmbH, Walpersdorfer Str. 53  2002 POWERSEM reserves the right to change limits, test conditions and dimensions
D - 91126 Schwabach
Phone: 09122 - 9764 - 0 FAX: 09122 - 9764 - 20