Fairchild Semiconductor IRFW740B, IRFI740B Datasheet
IRFW740B / IRFI740B
400V N-Channel MOSFET
IRFW740B / IRFI740B
November 2001
General Description
These N-Channel enhancement mode power field effect
transistors are produced using Fairchild’s proprietary,
planar, DMOS technology.
This advanced technology has been especially tailored to
minimize on-state resistance, provide superior switching
performance, and withstand high energy pulse in the
avalanche and commutation mode. These devices are well
Features
• 10A, 400V, R
• Low gate charge ( typical 41 nC)
• Low Crss ( typical 35 pF)
• Fast switching
• 100% avalanche tested
• Improved dv/dt capability
= 0.54Ω @VGS = 10 V
DS(on)
suited for high efficiency switch mode power supplies and
electronic lamp ballasts based on half bridge.
D
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GS
D
D2-PAK
IRFW Series
GSD
I2-PAK
IRFI Series
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G
S
Absolute Maximum Ratings T
= 25°C unless otherwise noted
C
Symbol Parameter IRFW740B / IRFI740B Units
V
DSS
I
D
I
DM
V
GSS
E
AS
I
AR
E
AR
dv/dt Peak Diode Recovery dv/dt
P
D
Drain-Source Voltage 400 V
Drain Current
- Continuous (T
- Continuous (T
Drain Current - Pulsed
= 25°C)
C
= 100°C)
C
(Note 1)
10 A
6.3 A
40 A
Gate-Source Voltage ± 30 V
Single Pulsed Avalanche Energy
Avalanche Current
Repetitive Avalanche Energy
Power Dissipation (TA = 25°C) *
Power Dissipation (T
= 25°C)
C
(Note 2)
(Note 1)
(Note 1)
(Note 3)
450 mJ
10 A
13.4 mJ
5.5 V/ns
3.13 W
134 W
- Derate above 25°C 1.08 W/°C
, T
T
J
stg
T
L
Operating and Storage Temperature Range -55 to +150 °C
Maximum lead temperature for soldering purposes,
1/8" from case for 5 seconds
300 °C
Thermal Characteristics
Symbol Parameter Typ Max Units
R
θJC
R
θJA
R
θJA
* When mounted on the minimum pad size recommended (PCB Mount)
©2001 Fairchild Semiconductor Corporation
Thermal Resistance, Junction-to-Case -- 0.93 °C/W
Thermal Resistance, Junction-to-Ambient * -- 40 °C/W
Thermal Resistance, Junction-to-Ambient -- 62.5 °C/W
Rev. B, November 2001
IRFW740B / IRFI740B
Electrical Characteristics T
= 25°C unless otherwise noted
C
Symbol Parameter Test Conditions Min Typ Max Units
Off Characteristics
BV
DSS
∆BV
DSS
/ ∆T
I
DSS
I
GSSF
I
GSSR
Drain-Source Breakdown Voltage
Breakdown Voltage Temperature
Coefficient
J
Zero Gate Voltage Drain Current
Gate-Body Leakage Current, Forward
Gate-Body Leakage Current, Reverse
= 0 V, ID = 250 µA
V
GS
I
= 250 µA, Referenced to 25°C
D
V
= 400 V, VGS = 0 V
DS
V
= 320 V, TC = 125°C
DS
V
= 30 V, VDS = 0 V
GS
= -30 V, VDS = 0 V
V
GS
400 -- -- V
-- 0.4 -- V/°C
-- -- 10 µA
-- -- 100 µA
-- -- 100 nA
-- -- -100 nA
On Characteristics
V
R
g
FS
GS(th)
DS(on)
Gate Threshold Voltage
Static Drain-Source
On-Resistance
Forward Transconductance
V
= VGS, ID = 250 µA
DS
= 10 V, ID = 5.0 A
V
GS
= 40 V, ID = 5.0 A
V
DS
(Note 4)
2.0 -- 4.0 V
-- 0.43 0.54 Ω
-- 9.6 -- S
Dynamic Characteristics
C
iss
C
oss
C
rss
Input Capacitance
Output Capacitance -- 150 195 pF
Reverse Transfer Capacitance -- 35 45 pF
= 25 V, VGS = 0 V,
V
DS
f = 1.0 MHz
-- 1400 1800 pF
Switching Characteristics
t
d(on)
t
r
t
d(off)
t
f
Q
Q
Q
g
gs
gd
Turn-On Delay Time
Turn-On Rise Time -- 80 170 ns
Turn-Off Delay Time -- 125 260 ns
Turn-Off Fall Time -- 85 1 8 0 n s
Total Gate Charge
Gate-Source Charge -- 7 -- nC
Gate-Drain Charge -- 17 -- nC
= 200 V, ID = 10 A,
V
DD
= 25 Ω
R
G
V
= 320 V, ID = 10 A,
DS
V
GS
= 10 V
(Note 4, 5)
(Note 4, 5)
-- 20 5 0 ns
-- 41 5 3 nC
Drain-Source Diode Characteristics and Maximum Ratings
I
S
I
SM
V
SD
t
rr
Q
rr
Notes:
1. Repetitive Rating : Pulse width limited by maximum junction temperature
2. L = 7.9mH, IAS = 10A, VDD = 50V, RG = 25 Ω, Starting TJ = 25°C
3. ISD ≤ 10A, di/dt ≤ 300A/µs, VDD ≤ BV
4. Pulse Test : Pulse width ≤ 300µs, Duty cycle ≤ 2%
5. Essentially independent of operating temperature
©2001 Fairchild Semiconductor Corporation
Maximum Continuous Drain-Source Diode Forward Current -- -- 10 A
Maximum Pulsed Drain-Source Diode Forward Current -- -- 40 A
= 0 V, IS = 10 A
Drain-Source Diode Forward Voltage
Reverse Recovery Time
Reverse Recovery Charge -- 3.57 -- µC
Starting TJ = 25°C
DSS,
V
GS
= 0 V, IS = 10 A,
V
GS
/ dt = 100 A/µs
dI
F
-- -- 1.5 V
-- 330 -- ns
(Note 4)
Rev. B, November 2001
Typical Characteristics
IRFW740B / IRFI740B
V
GS
Top : 1 5 .0 V
10.0 V
8.0 V
7.0 V
1
6.5 V
10
6.0 V
5.5 V
Botto m : 5.0 V
0
10
, Drain Current [A]
D
I
-1
10
-1
10
0
10
$
Note s :
1. 25 0's Pulse Test
2. TC = 25
1
10
VDS, Drain-Source Voltage [V]
2.4
2.0
1.6
],
&
[
1.2
DS(ON)
R
0.8
Drain-Source On-Resistance
0.4
0.0
0 5 10 15 20 25 30 35
VGS = 10V
VGS = 20V
$
ID, Drain Current [A]
Note : T
1
10
150oC
25oC
0
10
, Drain Current [A]
D
I
%
-1
10
246810
-55oC
$
Notes :
= 40V
1. V
DS
2. 25 0's Pulse Test
VGS, Gate-Source Voltage [V]
Figure 2. Transfer CharacteristicsFigure 1. On-Region Char act er i stic s
1
10
0
10
%
%
25
, Reverse Drain Current [A]
DR
%
= 25
J
I
-1
10
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
150
$
Note s :
= 0V
1. V
GS
2. 25 0's Pulse Test
VSD, Source-Drain voltage [V]
Figure 3. On-Resistance Variation vs
Drain Current and Gate Voltage
Figure 4. Body Diode Forward Voltage
Variation with Source Current
and Temperature
3000
2500
2000
1500
1000
Capacitance [pF]
500
0
-1
10
VDS, Drain-Source Voltage [V]
C
= Cgs + Cgd (Cds = shorted)
iss
C
= Cds + C
oss
gd
C
= C
rss
gd
C
iss
C
oss
$
Note s :
= 0 V
1. V
10
1
GS
2. f = 1 MHz
C
rss
0
10
12
10
8
6
4
, Gate-Source Voltage [V]
GS
2
V
0
0 5 10 15 20 25 30 35 40 45
QG, Tota l G a te C h a rg e [n C ]
VDS = 200V
VDS = 320V
VDS = 80V
$
Note : I
Figure 5. Capacitance Characteristics Figure 6. Gate Charge Ch a ra ct eristics
= 10 A
D
Rev. B, November 2001©2001 Fairchild Semiconductor Corporation
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