IRFE9120
VDS
L
RG
-1200VV
tp
D.U.T
IAS
0.01Ω
DRIVER
VDD
A
10V
15V
Fig 12a. Unclamped Inductive Test Circuit
IAS
tp
V(BR)DSS
Fig 12b. Unclamped Inductive Waveforms
-10 V
QGS
VG
QG
QGD
Charge
Fig 13a. Basic Gate Charge Waveform
6
Fig 12c. Maximum Avalanche Energy
Vs. Drain Current
Current Regulator
Same Type as D.U.T.
50KΩ
12V
.2µF
.3µF
D.U.T.
-
+VDS
VGS
-3mA
IG
ID
Current Sampling Resistors
Fig 13b. Gate Charge Test Circuit
www.irf.com