IRFP9140N
VDS
L
RG
-20V
tp
D .U .T
IAS
0.01Ω
D R IV E R
VDD
A
15V
Fig 12a. Unclamped Inductive Test Circuit
IAS
1200
ID
TOP
-4.7A
-8.1A
1000
BOTTOM -11A
800
600
400
200
0
A
25
50
75
100
125
150
175
Starting TJ , Junction Tem perature (°C)
Fig 12c. Maximum Avalanche Energy
Vs. Drain Current
tp
V(BR)DSS
Fig 12b. Unclamped Inductive Waveforms
-10V
QGS
VG
QG
QGD
Charge
Fig 13a. Basic Gate Charge Waveform
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