IRFPS3815
4000
3000
2000
1000
0
1 5V
I
D
TOP
24A
41A
58A
BOTTOM
DRIVER
L
V
G
DS
D.U.T
AS
R
+
V
D D
-
I
A
20V
0.01
t
Ω
p
Fig 12a. Unclamped Inductive Test Circuit
V
(BR)DSS
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.
Q
G
50KΩ
.2µF
12V
10 V
.3µF
Q
Q
GD
GS
+
V
DS
D.U.T.
-
V
GS
V
G
3mA
I
I
D
G
Charge
Current Sampling Resistors
Fig 13a. Basic Gate Charge Waveform
Fig 13b. Gate Charge Test Circuit
6
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