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1
6/26/01
IRF7477
SMPS MOSFET
HEXFET
Power MOSFET
Notes
through
are on page 8
Symbol
Parameter
Typ.
Max.
Units
R
JL
Junction-to-Drain Lead
20
R
JA
Junction-to-Ambient
50
C/W
Thermal Resistance
Absolute Maximum Ratings
Symbol
Parameter
Max.
Units
V
DS
Drain-Source Voltage
30
V
V
GS
Gate-to-Source Voltage
20 V
I
D
@ T
A
= 25C
Continuous Drain Current, V
GS
@ 10V
14
I
D
@ T
A
= 70C
Continuous Drain Current, V
GS
@ 10V
11
A
I
DM
Pulsed Drain Current
110
P
D
@T
A
= 25C
Maximum Power Dissipation
2.5
W
P
D
@T
A
= 70C
Maximum Power Dissipation
1.6
W
Linear Derating Factor 0.02 mW/C
T
J
, T
STG
Junction and Storage Temperature Range
-55 to + 150
C
SO-8
T o p V ie w
8
1
2
3
4
5
6
7
D
D
D
D
G
S
A
S
S
A
Applications
Benefits
l
Ultra-Low Gate Impedance
l
Very Low R
DS(on)
l
Fully Characterized Avalanche Voltage
and Current
l
Low Charge Ratio to Eliminate False Turn
On in High Frequency Circuits
l
High Frequency Synchronous Buck
Converters for Computers and
Communications
V
DSS
R
DS(on)
max (m
)
)
)
)
)
I
D
30V
8.5@V
GS
= 10V
14A
10@V
GS
= 4.5V
11A
PD- 94094A
IRF7477
2
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Symbol
Parameter
Min. Typ. Max. Units
Conditions
I
S
Continuous Source Current
MOSFET symbol
(Body Diode)
showing the
I
SM
Pulsed Source Current
integral reverse
(Body Diode)
p-n junction diode.
0.80
1.3
V
T
J
= 25C, I
S
= 11A, V
GS
= 0V
0.65
T
J
= 125C, I
S
= 11A, V
GS
= 0V
t
rr
Reverse Recovery Time
91
140
ns
T
J
= 25C, I
F
= 11A, V
R
=15V
Q
rr
Reverse Recovery Charge
130
200
nC
di/dt = 100A/s
t
rr
Reverse Recovery Time
90
140
ns
T
J
= 125C, I
F
= 11A, V
R
=15V
Q
rr
Reverse Recovery Charge
140
210
nC
di/dt = 100A/s
Dynamic @ T
J
= 25C (unless otherwise specified)
ns
Symbol
Parameter
Typ.
Max.
Units
E
AS
Single Pulse Avalanche Energy
500
mJ
I
AR
Avalanche Current
8.2
A
Avalanche Characteristics
S
D
G
Diode Characteristics
2.3
110
A
Symbol
Parameter
Min. Typ. Max. Units
Conditions
g
fs
Forward Transconductance
35
S
V
DS
= 15V, I
D
= 11A
Q
g
Total Gate Charge
25 38 I
D
= 11A
Q
gs
Gate-to-Source Charge
6.5
nC
V
DS
= 15V
Q
gd
Gate-to-Drain ("Miller") Charge
8.2
V
GS
= 4.5V
Q
oss
Output Gate Charge
30
V
GS
= 0V, V
DS
= 15V
t
d(on)
Turn-On Delay Time
12
V
DD
= 15V
t
r
Rise Time
9.8
I
D
= 11A
t
d(off)
Turn-Off Delay Time
19
R
G
= 1.8
t
f
Fall Time
5.9
V
GS
= 4.5V
C
iss
Input Capacitance
2710
V
GS
= 0V
C
oss
Output Capacitance
1120
V
DS
= 15V
C
rss
Reverse Transfer Capacitance
100
pF
= 1.0MHz
V
SD
Diode Forward Voltage
Parameter
Min. Typ. Max. Units
Conditions
V
(BR)DSS
Drain-to-Source Breakdown Voltage
30
V
V
GS
= 0V, I
D
= 250A
V
(BR)DSS
/
T
J
Breakdown Voltage Temp. Coefficient
0.029 V/C Reference to 25C, I
D
= 1mA
6.5
8.5
V
GS
= 10V, I
D
= 14A
7.7
10
V
GS
= 4.5V, I
D
= 11A
V
GS(th)
Gate Threshold Voltage
1.0
2.5
V
V
DS
= V
GS
, I
D
= 250A
20
A
V
DS
= 24V, V
GS
= 0V
100
V
DS
= 24V, V
GS
= 0V, T
J
= 125C
Gate-to-Source Forward Leakage
200
V
GS
= 16V
Gate-to-Source Reverse Leakage
-200
nA
V
GS
= -16V
Static @ T
J
= 25C (unless otherwise specified)
I
GSS
I
DSS
Drain-to-Source Leakage Current
R
DS(on)
Static Drain-to-Source On-Resistance
m
IRF7477
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3
Fig 2. Typical Output Characteristics
Fig 1. Typical Output Characteristics
Fig 3. Typical Transfer Characteristics
1
10
100
1000
0.1
1
10
100
20s PULSE WIDTH
T = 25 C
J
TOP
BOTTOM
VGS
10V
7.0V
4.5V
3.7V
3.5V
3.3V
3.0V
2.7V
V , Drain-to-Source Voltage (V)
I , Drain-to-Source Current (A)
DS
D
2.7V
1
10
100
1000
0.1
1
10
100
20s PULSE WIDTH
T = 150 C
J
TOP
BOTTOM
VGS
10V
7.0V
4.5V
3.7V
3.5V
3.3V
3.0V
2.7V
V , Drain-to-Source Voltage (V)
I , Drain-to-Source Current (A)
DS
D
2.7V
10
100
1000
2.5
3.0
3.5
4.0
V = 50V
20s PULSE WIDTH
DS
V , Gate-to-Source Voltage (V)
I , Drain-to-Source Current (A)
GS
D
T = 25 C
J
T = 150 C
J
Fig 4. Normalized On-Resistance
Vs. Temperature
-60 -40 -20
0
20
40
60
80 100 120 140 160
0.0
0.5
1.0
1.5
2.0
T , Junction Temperature ( C)
R , Drain-to-Source On Resistance
(Normalized)
J
DS(on)
V
=
I =
GS
D
10V
14A
IRF7477
4
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Fig 6. Typical Gate Charge Vs.
Gate-to-Source Voltage
Fig 5. Typical Capacitance Vs.
Drain-to-Source Voltage
0
10
20
30
40
50
60
0
2
4
6
8
10
12
Q , Total Gate Charge (nC)
V , Gate-to-Source Voltage (V)
G
GS
I =
D
11A
V
= 15V
DS
V
= 24V
DS
Fig 7. Typical Source-Drain Diode
Forward Voltage
0.1
1
10
100
1000
0.2
0.4
0.6
0.8
1.0
1.2
V ,Source-to-Drain Voltage (V)
I , Reverse Drain Current (A)
SD
SD
V = 0 V
GS
T = 25 C
J
T = 150 C
J
Fig 8. Maximum Safe Operating Area
1
10
100
VDS, Drain-to-Source Voltage (V)
10
100
1000
10000
100000
C, Capacitance(pF)
Coss
Crss
Ciss
VGS = 0V, f = 1 MHZ
Ciss = Cgs + Cgd, Cds SHORTED
Crss = Cgd
Coss = Cds + Cgd
0.1
1
10
100
1000
VDS , Drain-toSource Voltage (V)
1
10
100
1000
I D
, Drain-to-Source Current (A)
Tc = 25C
Tj = 150C
Single Pulse
1msec
10msec
OPERATION IN THIS AREA
LIMITED BY R DS(on)
100sec
IRF7477
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5
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient
0.01
0.1
1
10
100
0.00001
0.0001
0.001
0.01
0.1
1
10
100
Notes:
1. Duty factor D =
t / t
2. Peak T = P
x Z
+ T
1
2
J
DM
thJA
A
P
t
t
DM
1
2
t , Rectangular Pulse Duration (sec)
Thermal Response
(Z )
1
thJA
0.01
0.02
0.05
0.10
0.20
D = 0.50
SINGLE PULSE
(THERMAL RESPONSE)
Fig 6. On-Resistance Vs. Drain Current
Fig 10a. Switching Time Test Circuit
V
DS
90%
10%
V
GS
t
d(on)
t
r
t
d(off)
t
f
Fig 10b. Switching Time Waveforms
V
DS
Pulse Width
1
s
Duty Factor
0.1 %
R
D
V
GS
R
G
D.U.T.
10V
+
-
V
DD
25
50
75
100
125
150
0
3
6
9
12
15
T , Case Temperature
( C)
I , Drain Current (A)
C
D
Fig 9. Maximum Drain Current Vs.
Ambient Temperature
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