IRFD9120, SiHFD9120
Vishay Siliconix
L
Vary
t
p
to obtain
required I
AS
R
G
V
DS
I
AS
V
DS
D.U.T.
I
AS
-
+
V
DD
t
p
0.01
Ω
V
DS
V
DD
- 10
V
t
p
Fig. 12a - Unclamped Inductive Test Circuit
Fig. 12b - Unclamped Inductive Waveforms
Fig. 12c - Maximum Avalanche Energy vs. Drain Current
Current regulator
Same type as D.U.T.
50 kΩ
12
V
- 10
V
Q
GS
Q
G
0.2
µF
0.3
µF
Q
GD
V
G
V
GS
- 3 mA
Charge
I
G
I
D
Current sampling resistors
Fig. 13a - Basic Gate Charge Waveform
Fig. 13b - Gate Charge Test Circuit
www.vishay.com
6
Document Number: 91139
S-81273-Rev. A, 16-Jun-08
+
D.U.T.
-
V
DS