Datasheet

IRF3708/S/LPbF
6 www.irf.com
Fig 14a&b. Gate Charge Test Circuit
and Waveform
Fig 12. On-Resistance Vs. Drain Current
Fig 15a&b. Unclamped Inductive Test circuit
and Waveforms
Fig 15c. Maximum Avalanche Energy
Vs. Drain Current
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
+
-
V
GS
Q
G
Q
GS
Q
GD
V
G
Charge
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 75 100 125 150 175
0
120
240
360
480
600
Starting T , Junction Temperature ( C)
E , Single Pulse Avalanche Energy (mJ)
J
AS
°
I
D
TOP
BOTTOM
10A
20.7A
24.8A
Fig 13. On-Resistance Vs. Gate Voltage
0 50 100 150 200 250 300
I
D
, Drain Current ( A )
0.005
0.010
0.015
0.020
0.025
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
(
Ω
)
VGS = 4.5V
VGS = 10V
2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
V
GS,
Gate -to -Source Voltage (V)
0.007
0.009
0.011
0.013
0.015
0.017
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
(
Ω
)
I
D
= 31A