PSKD255 Datasheet, PDF (3/3 Pages) Powersem GmbH – Diode Modules

2500
W
P_tot ²⁰⁰⁰
1500
1000
500
C^Cir^irc^cu^uit^it
B^B6^6UU
33xxPSMKDDD22555
R_thKA K/W
0.03
0.06
0.1
0.15
0.2
0.3
0.4
Fig. 6 Three phase rectifier bridge:
Power dissipation versus direct
output current and ambient
temperature
0
0
200 400 600 800 A 0
I_dAVM
25
50
75
100 125 °C 150
T_A
0.25
Fig. 7 Transient thermal impedance
K/W
junction to case (per diode)
0.20
R_thJC for various conduction angles d:
Z_thJC
0.15
0.10
0.05
d
R_thJC (K/W)
DC
0.139
180°
0.148
30°
120°
0.156
60°
60°
0.176
120°
180°
30°
0.214
DC
Constants for Z_thJC calculation:
i
R_thi (K/W)
t_i (s)
0.00
1
0.0066
0.00054
10^-3
10^-2
10^-1
10⁰
10¹
s
10²
2
0.0358
0.098
t
3
0.0831
0.54
4
0.0129
12
0.30
Fig. 8 Transient thermal impedance
K/W
junction to heatsink (per diode)
0.25
Z_thJK
0.20
0.15
0.10
0.05
R_thJK for various conduction angles d:
d
R_thJK (K/W)
DC
0.179
180°
0.188
120°
0.196
30°
60°
120°
60°
0.216
30°
0.254
180°
DC
Constants for Z_thJK calculation:
i
R_thi (K/W)
t_i (s)
0.00
1
0.0066
0.00054
10^-3
10^-2
10^-1
10⁰
10¹
s
10²
2
0.0358
0.098
t
3
0.0831
0.54
4
0.0129
12
5
0.04
12
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