Diodes DMG7408SFG - Manual (Page 4)

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DMG7408SFG
Document number: DS35620 Rev. 5 - 2
4 of 6
www.diodes.com
June 2012
© Diodes Incorporated
DMG7408SFG
ADVAN
CE I
N
F
O
RM
ATI
O
N
ADVAN
CE I
N
F
O
RM
ATI
O
N
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Fig. 7 Gate Threshold Variation vs. Ambient Temperature
-50 -25 0 25 50 75 100 125 150
T , AMBIENT TEMPERATURE (°C)
A
V
, G
A
TE TH
RESHO
L
D VOL
T
AG
E
(
V)
GS(
T
H
)
I = 1mA
D
I = 250µA
D
0.2 0.4 0.6 0.8 1.0 1.2
Fig. 8 Diode Forward Voltage vs. Current
V , SOURCE-DRAIN VOLTAGE (V)
SD
0
2
4
6
8
10
12
14
16
18
20
I,
S
O
U
R
C
E
C
U
R
R
E
N
T
(A
)
S
T = 25°C
A
0 5 10 15 20 25 30
Fig. 9 Typical Total Capacitance
V , DRAIN-SOURCE VOLTAGE (V)
DS
10
1,000
C
,
C
A
P
A
C
IT
AN
C
E (
p
F
)
100
C
iss
C
rss
C
oss
f = 1MHz
0 2 4 6 8 10 12
Fig. 10 Gate-Charge Characteristics
Q , TOTAL GATE CHARGE (nC)
g
0
2
4
6
8
10
V,
G
A
T
E-
S
O
U
R
C
E V
O
L
T
A
G
E (
V)
GS
V = 15V
I = 10A
DS
D
0.001 0.01 0.1 1 10 100
Fig. 11 Transient Thermal Response
t , PULSE DURATION TIME (s)
1
0.00001 1,000 0.0001
0.001
0.01
0.1
1
r(
t),
T
R
A
N
SI
EN
T
T
H
E
R
MA
L
R
ES
IS
T
AN
C
E
T - T = P * R (t)
Duty Cycle, D = t /t
J A JA
1 2
θ
R (t) = r(t) * θJA R
R = 90°C/W
θ
θ
JA
JA
P(pk)
t
1
t
2
D = 0.7
D = 0.3
D = 0.1
D = 0.05
D = 0.02
D = 0.01
D = 0.005
D = Single Pulse
D = 0.9
D = 0.5