20
Power semiconductor testing and replacing
A separate discrete-IGBTs can be tested only when disconnected
from the board with IGBT-tester.
When replacing damaged IGBTs, the whole set has to be
replaced, including gate resistors!!
Discrete-IGBT and secondary diodes tightening torque to the heat
sink is 0,6…1,2 Nm.
G
C
E
IG
B
T
-T
E
S
TE
R
T
R
1
T
R
2
C
O
N
T
R
O
L
O
FF
O
N
B2
/6
C2
E1/
1
E
2
/2
C1/3
B1/4
