IRFZ48V
400
300
200
100
0
I
D
15V
TOP
29A
51A
BOTTOM 72A
D RIVER
L
V
D S
D .U .T
R
+
G
V
D D
-
I
A
AS
20V
0.01
Ω
t
p
Fig 12a. Unclamped Inductive Test Circuit
V
(BR )D SS
t
p
25
50
75
100
125
150
175
°
Starting T , Junction Temperature ( C)
J
Fig 12c. Maximum Avalanche Energy
Vs. Drain Current
I
AS
Fig 12b. Unclamped Inductive Waveforms
Current Regulator
Same Type as D.U.T.
50KΩ
.2µF
12V
.3µF
Q
G
+
10 V
V
DS
D.U.T.
-
Q
Q
GD
GS
V
GS
V
G
3mA
I
I
D
G
Current Sampling Resistors
Charge
Fig 13b. Gate Charge Test Circuit
Fig 13a. Basic Gate Charge Waveform
6
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