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FW250F1

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
Tyco Electronics Corp.. 7
Data Sheet
July 2002 dc-dc Converters; 36 to 75 Vdc Input, 3.3 Vdc Output; 165 W to 198 W
FW250F1 and FW300F1 Power Modules:
Characteristic Curves (continued)
8-2226 (C)
Figure 5. Typical FW250F1 Efficiency vs. Output
Current at Room Temperature
8-1734 (C)
Figure 6. Typical FW300F1 Efficiency vs. Output
Current at Room Temperature
8-2227 (C)
Figure 7. Typical FW250F1 Output Ripple Voltage
at Room Temperature, 48 V Input, and
50 A Output
8-1735 (C)
Figure 8. Typical FW300F1 Output Ripple Voltage
at Room Temperature and 60 A Output
10 15 20 25 30 35
70
76
OUTPUT CURRENT
,
I
O
(
A
)
74
78
505
72
40 45
80
82
VI =36V
VI =48V
VI =75V
E
F
F
I
C
I
E
N
C
Y
,
η
(
%
)
79
75
10 20 4030 50
72
78
OUTPUT CURRENT
,
IO
(
A
)
76
77
74
73
80
6
0
81
E
F
F
I
C
I
E
N
C
Y
,
η
(
%
)
VI =36V
VI =54V
VI =72V
TIME, t
(
500 ns/div
)
O
U
T
P
U
T
V
O
L
T
A
G
E
,
V
O
(
V
)
(
2
0
m
V
/
d
i
v
)
TIME, t (500 ns/div)
O
U
T
P
U
T
V
O
L
T
A
G
E
,
V
O
(
V
)
(
1
0
m
V
/
d
i
v
)
VI =36V
VI =48V
VI =72V
88 Tyco Electronics Corp..
Data Sheet
July 2002dc-dc Converters; 36 to 75 Vdc Input, 3.3 Vdc Output; 165 W to 198 W
FW250F1 and FW300F1 Power Modules:
Characteristic Curves (continued)
8-2228 (C)
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
across the load.
Figure 9. Typical FW250F1 Transient Response to
Step Decrease in Load from 50% to 25%
of Full Load at Room Temperature and
48 V Input (Waveform Averaged to
Eliminate Ripple Component.)
8-2229 (C)
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
across the load.
Figure 10. Typical FW250F1 Transient Response to
Step Increase in Load from 50% to 75%
of Full Load at Room Temperature and
48 V Input (Waveform Averaged to
Eliminate Ripple Component.)
8-2230 (C)
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
across the load.
Figure 11. Typical FW300F1 Transient Response to
Step Decrease in Load from 50% to 25%
of Full Load at Room Temperature and
48 V Input (Waveform Averaged to
Eliminate Ripple Component.)
8-2231 (C)
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
across the load.
Figure 12. Typical FW300F1 Transient Response to
Step Increase in Load from 50% to 75%
of Full Load at Room Temperature and
48 V Input (Waveform Averaged to
Eliminate Ripple Component.)
T
IME, t
(
500
µ
s/div
)
O
U
T
P
U
T
V
O
L
T
A
G
E
,
V
O
(
V
)
(
5
0
0
m
V
/
d
i
v
)
O
U
T
P
U
T
C
U
R
R
E
N
T
,
I
O
(
A
)
(
1
0
A
/
d
i
v
)
25 A
12.5 A
TIME, t
(
500
µ
s
/
div
)
O
U
T
P
U
T
V
O
L
T
A
G
E
,
V
O
(
V
)
(
5
0
0
m
V
/
d
i
v
)
O
U
T
P
U
T
C
U
R
R
E
N
T
,
I
O
(
A
)
(
1
0
A
/
d
i
v
)
25 A
37 A
T
IME, t
(
200
µ
s/div
)
O
U
T
P
U
T
V
O
L
T
A
G
E
,
V
O
(
V
)
(
2
0
0
m
V
/
d
i
v
)
O
U
T
P
U
T
C
U
R
R
E
N
T
,
I
O
(
A
)
(
1
0
A
/
d
i
v
)
30 A
15 A
TIME, t
(
200
µ
s
/
div
)
O
U
T
P
U
T
V
O
L
T
A
G
E
,
V
O
(
V
)
(
2
0
0
m
V
/
d
i
v
)
O
U
T
P
U
T
C
U
R
R
E
N
T
,
I
O
(
A
)
(
1
0
m
V
/
d
i
v
)
45 A
30 A
Tyco Electronics Corp.. 9
Data Sheet
July 2002 dc-dc Converters; 36 to 75 Vdc Input, 3.3 Vdc Output; 165 W to 198 W
FW250F1 and FW300F1 Power Modules:
Characteristic Curves (continued)
8-1736 (C)
Note: Tested with a 4000 µF aluminum and a 1.0 µF ceramic capaci-
tor across the load.
Figure 13. Typical FW300F1 Start-Up Transient at
Room Temperature, 48 V Input, and Full
Load
Test Configurations
8-203
Note: Measure input reflected-ripple current with a simulated source
inductance (L
TEST) of 12 µH. Capacitor CS offsets possible bat-
tery impedance. Measure current as shown above.
Figure 14. Input Reflected-Ripple Test Setup
8-683 (C).f
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
Figure 15. Output Voltage and Efficiency
Measurement Test Setup
8-513 (C).m
Note: Use a 0.1 µF ceramic capacitor and a 10 µF aluminum or
tantalum capacitor. Scope measurement should be made
using a BNC socket. Position the load between 50 mm and
76 mm (2 in. and 3 in.) from the module.
Figure 16. Peak-to-Peak Output Noise
Measurement Test Setup
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power mod-
ule. For the test configuration in Figure 14, a 100 µF
electrolytic capacitor (ESR < 0.3 Ω at 100 kHz)
mounted close to the power module helps ensure sta-
bility of the unit. For other highly inductive source
impedances, consult the factory for further application
guidelines.
TIME, t (5 ms/div)
O
U
T
P
U
T
V
O
L
T
A
G
E
,
V
O
(
V
)
(
1
V
/
d
i
v
)
R
E
M
O
T
E
O
N
/
O
F
F
,
V
O
N
/
O
F
F
(
V
)
TO OSCILLOSCOPE
12 µH
V
I(+)
V
I(-)
BATTERY
LTEST
Cs 220 µF
ESR < 0.1 Ω
@ 20 ˚C, 100 kHz
100 µF
ESR < 0.3 Ω
@ 100 kHz
VI(Ð)
V
O(+)
SENSE(+)
SENSE(-)
V
O(-)
V
I(+)
IO
LOAD
CONTACT AND
DISTRIBUTION LOSSES
SUPPLY
II
CONTACT
RESISTANCE
η
V
O +()–VO –()[]IO
VI +()–VI –()[]II
--------------------------------------------------
x 100 %=
VO (+)
V
O(-)
1.0 µF
RESISTIVE
LOAD
SCOPE
COPPER STRIP
10.0 µF
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

FW250F1

Mfr. #:
Buy FW250F1
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Description:
DC DC CONVERTER 3.3V 165W
Lifecycle:
New from this manufacturer.
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