www.irf.com 4
IRF640N/S/LPbF
Fig 7. Typical Source-Drain Diode
Forward Voltage
Fig 5. Typical Capacitance Vs.
Drain-to-Source Voltage
Fig 6. Typical Gate Charge Vs.
Gate-to-Source Voltage
0.1
1
10
100
1000
0.1 1 10 100 1000
OPERATION IN THIS AREA LIMITED
BY R
DS(on)
Single Pulse
T
T
= 175 C
= 25 C
°
°
J
C
V , Drain-to-Source Voltage (V)
I , Drain Current (A)I , Drain Current (A)
DS
D
10us
100us
1ms
10ms
Fig 7. Typical Source-Drain Diode
Forward Voltage
Fig 8. Maximum Safe Operating Area
Fig 6. Typical Gate Charge Vs.
Gate-to-Source Voltage
1 10 100 1000
V
DS
, Drain-to-Source Voltage (V)
0
500
1000
1500
2000
2500
C
,
C
a
p
a
c
i
t
a
n
c
e
(
p
F
)
Coss
Crss
Ciss
V
GS
= 0V, f = 1 MHZ
C
iss
= C
gs
+ C
gd
, C
ds
SHORTED
C
rss
= C
gd
C
oss
= C
ds
+ C
gd
0 20 40 60 80
0
4
8
12
16
20
Q , Total Gate Charge (nC)
V , Gate-to-Source Voltage (V)
G
GS
I =
D
11A
V = 40V
DS
V = 100V
DS
V = 160V
DS
0.1
1
10
100
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
V ,Source-to-Drain Voltage (V)
I , Reverse Drain Current (A)
SD
SD
V = 0 V
GS
T = 25 C
J
°
T = 175 C
J
°
IRF640N/S/LPbF
www.irf.com 5
R
D
Fig 9. Maximum Drain Current Vs.
Case Temperature
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
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case
V
DS
Pulse Width ≤ 1 µs
Duty Factor ≤ 0.1 %
V
GS
R
G
D.U.T.
10V
+
-
25 50 75 100 125 150 175
0
4
8
12
16
20
T , Case Temperature( C)
I , Drain Current (A)
°
C
D
Fig 9. Maximum Drain Current Vs.
Case Temperature
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
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case
V
DS
Pulse Width ≤ 1 µs
Duty Factor ≤ 0.1 %
V
GS
R
G
D.U.T.
10V
V
DD
25 50 75 100 125 150 175
0
4
8
12
16
20
T , Case Temperature( C)
I , Drain Current (A)
°
C
D
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1 2
J DM thJC C
P
t
t
DM
1
2
t , Rectangular Pulse Duration (sec)
Thermal Response(Z )
1
thJC
0.01
0.02
0.05
0.10
0.20
D = 0.50
SINGLE PULSE
(THERMAL RESPONSE)
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IRF640N/S/LPbF
Q
G
Q
GS
Q
GD
V
G
Charge
D.U.T.
V
DS
I
D
I
G
3mA
V
GS
.3µF
50K
.2µF
12V
Current Regulator
Same Type as D.U.T.
Current Sampling Resistors
+
-
10 V
Fig 13b. Gate Charge Test Circuit
Fig 13a. Basic Gate Charge Waveform
Fig 12b. Unclamped Inductive Waveforms
Fig 12a. Unclamped Inductive Test Circuit
t
p
V
(BR)DSS
I
AS
Fig 12c. Maximum Avalanche Energy
Vs. Drain Current
R
G
I
AS
0.01
t
p
D.U.T
L
V
DS
+
-
V
DD
DRIVER
A
15V
20V
25 50 75 100 125 150 175
0
100
200
300
400
500
600
Starting T , Junction Temperature ( C)
E , Single Pulse Avalanche Energy (mJ)
J
AS
°
I
D
TOP
BOTTOM
4.4A
7.6A
11A

IRF640NPBF

Mfr. #:
Manufacturer:
Infineon Technologies
Description:
MOSFET MOSFT 200V 18A 150mOhm 44.7nC
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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