Pre-Irradiation
IRHM7450, JANSR2N7270
15V
VDS
L
DRIVER
RG
2V0GVS
tp
D.U.T
IAS
0.01Ω
+
- VDD
A
Fig 29a. Unclamped Inductive Test Circuit
V(BR)DSS
tp
Fig 29c. Maximum Avalanche Energy
Vs. Drain Current
IAS
Fig 29b. Unclamped Inductive Waveforms
QG
12 V
QGS
QGD
VG
Charge
Fig 30a. Basic Gate Charge Waveform
www.irf.com
Current Regulator
Same Type as D.U.T.
50KΩ
12V
.2µF
.3µF
+
D.U.T. -VDS
VGS
3mA
IG
ID
Current Sampling Resistors
Fig 30b. Gate Charge Test Circuit
11