IRF7402
Current Regulator
Same Type as D.U.T.
50KΩ
Q
G
12V
.2µF
.3µF
4.5V
Q
GS
V
G
Q
GD
V
GS
3mA
D.U.T.
+
V
-
DS
I
G
I
D
Charge
Current Sampling Resistors
Fig 12a.
Basic Gate Charge Waveform
Fig 12b.
Gate Charge Test Circuit
R
DS(on)
, Drain-to-Source On Resistance
( Ω )
VGS = 2.5V
0.2
R
DS(on)
, Drain-to-Source On Resistance
( Ω )
0.3
0.05
0.04
I
D
,
= 5.7A
0.1
0.03
VGS =5V
0.0
0
3
6
9
12
15
A
0.02
2
4
6
8
A
I
,
, Drain Current (A)
V
/5
, Gate-to-Source Voltage (V)
Fig 13.
Typical On-Resistance Vs. Drain
Current
Fig 14.
Typical On-Resistance Vs. Gate
Voltage
6
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