Diodes DMC3028LSD - Manual (Page 9)

DMC3028LSD
Document Revision: 4
9 of 11
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July 2009
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A Product Line of
Diodes Incorporated
DMC3028LSD
Q2 P-Channel continued
1 10
0
500
1000
1500
2000
2500
C
RSS
C
OSS
C
ISS
V
GS
= 0V
f = 1MHz
C
Capac
it
anc
e (pF)
-V
DS
- Drain - Source Voltage (V)
0 5 10 15 20 25 30 35
0
1
2
3
4
5
6
7
8
9
10
I
D
= 7.1A
V
DS
= 15V
Gate-Source Voltage v Gate Charge Capacitance v Drain-Source Voltage
Q - Charge (nC)
-V
GS
G
a
te
-S
ource
V
o
lta
ge
(V
)
Test Circuits – Q2 P-Channel
Current
regulator
Charge
Gate charge test circuit
Switching time test circuit
Basic gate charge waveform
Switching time waveforms
D.U.T
50k 0.2 ␮F 12V Same as
D.U.T
V
GS
V
GS
V
DS
V
G
Q
GS
Q
GD
Q
G
V
GS
90%
10%
t
(on)
t
(on)
t
d(on)
t
r
t
r
t
d(off)
V
DS
V
DD
R
D
R
G
Pulse width Ͻ1␮S
Duty factor 0.1%
V
DS
I
D
I
G