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