IRFR/U9120N
VDS
L
E
AS
, Single Pulse Avalanche Energy (mJ)
250
R
G
D .U .T
IA
S
-
V
V
DD
+
DD
A
D R IV E R
200
ID
TOP
-1.7A
-2.5A
BOTTOM -3.9A
-20V
tp
0.0 1
Ω
150
15V
100
Fig 12a.
Unclamped Inductive Test Circuit
I
AS
50
0
25
50
75
100
125
150
Starting T , Junction Temperature(
°
C)
J
tp
V
(BR)DSS
Fig 12c.
Maximum Avalanche Energy
Vs. Drain Current
Fig 12b.
Unclamped Inductive Waveforms
Current Regulator
Same Type as D.U.T.
50KΩ
Q
G
12V
.2µF
.3µF
-10V
Q
GS
V
G
Q
GD
V
GS
-3mA
Charge
I
G
I
D
Current Sampling Resistors
Fig 13a.
Basic Gate Charge Waveform
Fig 13b.
Gate Charge Test Circuit
6 / 10
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+
D.U.T.
-
V
DS