IRFR/U5305
L
V
D S
700
600
500
400
300
200
100
0
I
D
TO P
-6.6A
-11A
-16A
-
+
V
D .U .T
R
G
DD
A
BOTTOM
I
A S
D R IV E R
-20 V
0.01
t
Ω
p
15V
Fig 12a. Unclamped Inductive Test
Circuit
I
AS
V
= -25V
50
DD
A
175
25
75
100
125
150
Starting T , Junction Tem perature (°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
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