IRF6609
www.irf.com 7
Fig 17a. Switching Time Test Circuit
Fig 17b. Switching Time Waveforms
V
GS
V
DS
90%
10%
t
d(on)
t
d(off)
t
r
t
f
V
GS
Pulse Width < 1µs
Duty Factor < 0.1%
V
DD
V
DS
L
D
D.U.T
+
-
Fig 18b. Unclamped Inductive Waveforms
Fig 18a. Unclamped Inductive Test Circuit
t
p
V
(BR)DSS
I
AS
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 16a. Gate Charge Test Circuit
Fig 16b. Gate Charge Waveform
Vds
Vgs
Id
Vgs(th)
Qgs1
Qgs2 Qgd Qgodr
R
G
I
AS
0.01
Ω
t
p
D.U.T
L
V
DS
+
-
V
DD
DRIVER
15V
20V
V
GS
Fig 15. Maximum Avalanche Energy
Vs. Drain Current
Fig 14. On-Resistance Vs. Gate Voltage
25 50 75 100 125 150
Starting T
J
, Junction Temperature (°C)
0
200
400
600
800
1000
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
11A
14A
BOTTOM
25A
2.0 4.0 6.0 8.0 10.0
V
GS
, Gate-to-Source Voltage (V)
0
2
4
6
8
10
R
D
S
(
o
n
)
,
D
r
a
i
n
-
t
o
-
S
o
u
r
c
e
O
n
R
e
s
i
s
t
a
n
c
e
(
m
Ω
)
T
J
= 25°C
T
J
= 125°C
I
D
= 31A
