Applications
l
High Frequency Synchronous Buck
Converters for Computer Processor Power
l
Lead-Free
HEXFET
®
Power MOSFET
IRF3709ZPbF
IRF3709ZSPbF
IRF3709ZLPbF
Qg
17nC
6.3m
:
PD -95465
V
DSS
R
DS(on)
max
30V
Benefits
l
Low R
DS(on)
at 4.5V V
GS
l
Low Gate Charge
l
Fully Characterized Avalanche Voltage
and Current
TO-220AB
IRF3709Z
D
2
Pak
IRF3709ZS
TO-262
IRF3709ZL
Absolute Maximum Ratings
Parameter
V
DS
V
GS
I
D
@ T
C
= 25°C
I
D
@ T
C
= 100°C
I
DM
P
D
@T
C
= 25°C
P
D
@T
C
= 100°C
T
J
T
STG
Drain-to-Source Voltage
Gate-to-Source Voltage
Continuous Drain Current, V
GS
@ 10V
Continuous Drain Current, V
GS
@ 10V
Pulsed Drain Current
Max.
30
Units
V
A
c
h
62
h
87
350
79
40
± 20
Maximum Power Dissipation
Maximum Power Dissipation
Linear Derating Factor
Operating Junction and
Storage Temperature Range
Soldering Temperature, for 10 seconds
Mounting Torque, 6-32 or M3 screw
W
W/°C
°C
0.53
-55 to + 175
300 (1.6mm from case)
10 lbf in (1.1N m)
y
y
Thermal Resistance
Parameter
R
θJC
R
θJA
Junction-to-Case
i
Typ.
Max.
1.89
40
Units
°C/W
Junction-to-Ambient (PCB Mount)
g
–––
–––
Notes
through
are on page 12
www.irf.com
1
6/30/04
IRF3709Z/S/LPbF
Static @ T
J
= 25°C (unless otherwise specified)
Parameter
BV
DSS
∆ΒV
DSS
/∆T
J
R
DS(on)
V
GS(th)
∆V
GS(th)
/∆T
J
I
DSS
I
GSS
gfs
Q
g
Q
gs1
Q
gs2
Q
gd
Q
godr
Q
sw
Q
oss
t
d(on)
t
r
t
d(off)
t
f
C
iss
C
oss
C
rss
Drain-to-Source Breakdown Voltage
Breakdown Voltage Temp. Coefficient
Static Drain-to-Source On-Resistance
Gate Threshold Voltage
Gate Threshold Voltage Coefficient
Drain-to-Source Leakage Current
Gate-to-Source Forward Leakage
Gate-to-Source Reverse Leakage
Forward Transconductance
Total Gate Charge
Pre-Vth Gate-to-Source Charge
Post-Vth Gate-to-Source Charge
Gate-to-Drain Charge
Gate Charge Overdrive
Switch Charge (Q
gs2
+ Q
gd
)
Output Charge
Turn-On Delay Time
Rise Time
Turn-Off Delay Time
Fall Time
Input Capacitance
Output Capacitance
Reverse Transfer Capacitance
Min. Typ. Max. Units
30
–––
–––
–––
1.35
–––
–––
–––
–––
–––
88
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
0.021
5.0
6.2
–––
-5.5
–––
–––
–––
–––
–––
17
4.4
1.7
6.0
4.9
7.7
11
13
41
16
4.7
2130
450
220
–––
–––
6.3
7.8
2.25
–––
1.0
150
100
-100
–––
26
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
pF
V
GS
= 0V
V
DS
= 15V
ns
nC
nC
V
DS
= 15V
V
GS
= 4.5V
I
D
= 17A
S
nA
V
mV/°C
µA
V
Conditions
V
GS
= 0V, I
D
= 250µA
mV/°C Reference to 25°C, I
D
= 1mA
mΩ V
GS
= 10V, I
D
= 21A
V
GS
= 4.5V, I
D
e
= 17A
e
V
DS
= V
GS
, I
D
= 250µA
V
DS
= 24V, V
GS
= 0V
V
DS
= 24V, V
GS
= 0V, T
J
= 125°C
V
GS
= 20V
V
GS
= -20V
V
DS
= 15V, I
D
= 17A
See Fig. 14a&b
V
DS
= 16V, V
GS
= 0V
V
DD
= 15V, V
GS
= 4.5V
I
D
= 17A
Clamped Inductive Load
e
ƒ = 1.0MHz
Avalanche Characteristics
E
AS
I
AR
E
AR
Parameter
Single Pulse Avalanche Energy
Avalanche Current
Ã
d
Typ.
–––
–––
–––
Max.
60
17
7.9
Units
mJ
A
mJ
Repetitive Avalanche Energy
–––
–––
–––
–––
–––
–––
–––
–––
16
6.2
Diode Characteristics
Parameter
I
S
I
SM
V
SD
t
rr
Q
rr
Continuous Source Current
(Body Diode)
Pulsed Source Current
(Body Diode)
Diode Forward Voltage
Reverse Recovery Time
Reverse Recovery Charge
Min. Typ. Max. Units
87
h
Conditions
MOSFET symbol
D
A
350
1.0
24
9.3
V
ns
nC
Ã
showing the
integral reverse
G
S
p-n junction diode.
T
J
= 25°C, I
S
= 17A, V
GS
= 0V
T
J
= 25°C, I
F
= 17A, V
DD
= 15V
di/dt = 100A/µs
e
e
2
www.irf.com
IRF3709Z/S/LPbF
1000
TOP
VGS
10V
9.0V
7.0V
5.0V
4.5V
4.0V
3.5V
3.0V
1000
TOP
VGS
10V
9.0V
7.0V
5.0V
4.5V
4.0V
3.5V
3.0V
ID, Drain-to-Source Current (A)
BOTTOM
ID, Drain-to-Source Current (A)
100
BOTTOM
100
3.0V
10
3.0V
≤
60µs PULSE WIDTH
10
0.1
1
Tj = 25°C
1
100
0.1
1
10
≤
60µs PULSE WIDTH
Tj = 175°C
10
100
V DS, Drain-to-Source Voltage (V)
V DS, Drain-to-Source Voltage (V)
Fig 1.
Typical Output Characteristics
Fig 2.
Typical Output Characteristics
1000
RDS(on) , Drain-to-Source On Resistance
(Normalized)
2.0
ID, Drain-to-Source Current
(Α)
ID = 42A
VGS = 10V
100
T J = 175°C
1.5
10
1.0
1
T J = 25°C
VDS = 15V
≤60µs
PULSE WIDTH
0
1
2
3
4
5
6
7
8
0.1
0.5
-60 -40 -20 0
20 40 60 80 100 120 140 160 180
VGS, Gate-to-Source Voltage (V)
T J , Junction Temperature (°C)
Fig 3.
Typical Transfer Characteristics
Fig 4.
Normalized On-Resistance
vs. Temperature
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3
IRF3709Z/S/LPbF
10000
VGS = 0V,
f = 1 MHZ
C iss = C gs + Cgd, C ds SHORTED
C rss = C gd
C oss = C ds + Cgd
6.0
ID= 17A
VGS, Gate-to-Source Voltage (V)
5.0
4.0
3.0
2.0
1.0
0.0
C, Capacitance(pF)
Ciss
1000
VDS= 24V
VDS= 15V
Coss
Crss
100
1
10
100
0
5
10
15
20
25
VDS, Drain-to-Source Voltage (V)
QG Total Gate Charge (nC)
Fig 5.
Typical Capacitance vs.
Drain-to-Source Voltage
Fig 6.
Typical Gate Charge vs.
Gate-to-Source Voltage
1000.00
10000
OPERATION IN THIS AREA
LIMITED BY R DS(on)
100.00
T J = 175°C
ID, Drain-to-Source Current (A)
ISD, Reverse Drain Current (A)
1000
100
100µsec
10
1msec
1
Tc = 25°C
Tj = 175°C
Single Pulse
0
1
10
10msec
10.00
T J = 25°C
VGS = 0V
1.00
0.0
0.5
1.0
1.5
2.0
2.5
VSD, Source-to-Drain Voltage (V)
0.1
100
1000
VDS, Drain-to-Source Voltage (V)
Fig 7.
Typical Source-Drain Diode
Forward Voltage
Fig 8.
Maximum Safe Operating Area
4
www.irf.com
IRF3709Z/S/LPbF
90
Limited By Package
VGS(th) Gate threshold Voltage (V)
2.5
80
70
ID, Drain Current (A)
2.0
60
50
40
30
20
10
0
25
50
75
100
125
150
175
T C , Case Temperature (°C)
1.5
ID = 250µA
1.0
0.5
-75 -50 -25
0
25
50
75 100 125 150 175 200
T J , Temperature ( °C )
Fig 9.
Maximum Drain Current vs.
Case Temperature
Fig 10.
Threshold Voltage vs. Temperature
10
Thermal Response ( Z thJC )
1
D = 0.50
0.20
0.1
0.10
0.05
0.02
0.01
τ
J
R
1
R
1
τ
J
τ
1
τ
2
R
2
R
2
τ
C
τ
τ
2
Ri (°C/W)
τi
(sec)
0.832
0.000221
1.058
0.001171
τ
1
0.01
SINGLE PULSE
( THERMAL RESPONSE )
Ci=
τi/Ri
Ci i/Ri
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
0.0001
0.001
0.01
0.1
0.001
1E-006
1E-005
t1 , Rectangular Pulse Duration (sec)
Fig 11.
Maximum Effective Transient Thermal Impedance, Junction-to-Case
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5
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