
QS5U28
Transistor
8
7
6
5
4
3
2
1
Ta=25 ° C
V DD = ? 15V
I D = ? 2A
R G =10 ?
Pulsed
0
0
1
2
3
4
5
6
TOTAL GATE CHARGE : Qg (nC)
Fig.10 Dynamic Input Characteristics
Measurement circuits
Pulse Width
V GS
I D
R L
V DS
V GS
10%
50%
90%
50%
R G
D.U.T.
10%
10%
V DD
V DS
t d(on)
90%
t r
t d(off)
90%
t r
t on
t off
Fig.11 Switching Time Measurement Circuit
Fig.12 Switching Waveforms
V G
I G(Const)
V GS
I D
R L
V DS
V GS
Q g
R G
D.U.T.
Q gs
Q gd
V DD
Charge
Fig.13 Gate Charge Measurement Circuit
Fig.14 Gate Charge Waveforms
Rev.A
4/4