Datasheet

IRF9540NS/LPbF
6 www.irf.com
Fig 14b. Gate Charge Test Circuit
Fig 14a. Basic Gate Charge Waveform
Fig 13. Maximum Avalanche Energy
vs. Drain Current
Q
G
Q
GS
Q
GD
V
G
Charge
-10V
D.U.T.
V
DS
I
D
I
G
-3mA
V
GS
.3µF
50KΩ
.2µF
12V
Current Regulator
Same Type as D.U.T.
Current Sampling Resistors
+
-
Fig 12b. Unclamped Inductive Waveforms
Fig 12a. Unclamped Inductive Test Circuit
t
p
V
(
BR
)
DSS
I
AS
R
G
I
AS
0.01
Ω t
p
D.U.T
L
V
DS
V
DD
DRIVER
A
15V
-20V
25 50 75 100 125 150
Starting T
J
, Junction Temperature (°C)
0
50
100
150
200
250
300
350
E
A
S
,
S
i
n
g
l
e
P
u
l
s
e
A
v
a
l
a
n
c
h
e
E
n
e
r
g
y
(
m
J
)
I
D
TOP -6.7A
-9.6A
BOTTOM -14A