IRFR/U9120N
L
V
DS
250
200
150
100
50
I
D
TOP
-1.7A
-2.5A
BOTTOM -3.9A
D.U.T
-
+
R
G
VVDD
DD
I
A
AS
DRIVER
-20V
0.01
t
Ω
p
15V
Fig 12a. Unclamped Inductive Test Circuit
I
AS
0
25
50
75
100
125
150
°
Starting T , Junction Temperature( C)
J
Fig 12c. Maximum Avalanche Energy
Vs. Drain Current
t
p
V
(BR)DSS
Fig 12b. Unclamped Inductive Waveforms
Current Regulator
Same Type as D.U.T.
50KΩ
Q
G
.2µF
12V
.3µF
-10V
-
V
+
DS
Q
Q
GD
GS
D.U.T.
V
GS
V
G
-3mA
I
I
D
G
Charge
Current Sampling Resistors
Fig 13b. Gate Charge Test Circuit
Fig 13a. Basic Gate Charge Waveform
6 / 10
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KERSEMI [ Kersemi Electronic Co., Ltd. ]
