Pre-Irradiation
IRHN9150, JANSR2N7422U
VDS
L
RG
-V2G0VS
tp
D.U.T
IAS
0.01Ω
DRIVER
VDD
A
1200
1000
800
TOP
BOTTOM
ID
-9.8A
-14A
-22A
600
15V
400
Fig 12a. Unclamped Inductive Test Circuit
200
IAS
0
25
50
75
100
125
150
Starting TJ, Junction Temperature ( °C)
tp
V(BR)DSS
Fig 12b. Unclamped Inductive Waveforms
-12V
QGS
VG
QG
QGD
Charge
Fig 13a. Basic Gate Charge Waveform
www.irf.com
Fig 12c. Maximum Avalanche Energy
Vs. Drain Current
Current Regulator
Same Type as D.U.T.
-1122VV
.2µF
50KΩ
.3µF
D.U.T.
-
+VDS
VGS
-3mA
IG
ID
Current Sampling Resistors
Fig 13b. Gate Charge Test Circuit
7