FW250A1 Lineage Power, FW250A1 Datasheet - Page 9

• Manufacturer Part Number: FW250A1
• Description: CONVERTER DC/DC 5V 250W OUT
• Manufacturer: Lineage Power
• Series: FW250r
• Type: Isolated with Remote On/Offr

Specifications of FW250A1

• Output: 5V
• Number Of Outputs: 1
• Power (watts): 250W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: Module
• 1st Output: 5 VDC @ 50A
• Size / Dimension: 4.60" L x 2.40" W x 0.53" H (116.8mm x 61mm x 13.5mm)
• Power (watts) - Rated: 250W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 84%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

Data Sheet
April 2008
Characteristic Curves
Note: Tested with a 10 µF aluminum and a 1.0 µF ceramic capacitor
Figure 13. Typical FW300A1 Start-Up Transient at
Test Configurations
Note: Measure input reflected-ripple current with a simulated source
Lineage Power
BATTERY
Figure 14. Input Reflected-Ripple Test Setup
across the load.
inductance (L
tery impedance. Measure current as shown above.
TO OSCILLOSCOPE
Room Temperature, 48 V Input
TEST
Cs 220 µF
ESR < 0.1
@ 20 C, 100 kHz
) of 12 µH. Capacitor C
12 µH
L
TIME, t (5 ms/div)
TEST
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 250 W to 300 W
ESR < 0.3
(continued)
@ 100 kHz
100 µF
S
offsets possible bat-
8-203 (C).o
8-1757 (C)
V
V
I
I
(+)
(–)
Note: Use a 0.1 µF ceramic capacitor and a 10 µF aluminum or
Figure 15. Peak-to-Peak Output Noise
Note: All measurements are taken at the module terminals. When
Figure 16. Output Voltage and Efficiency
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
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.
FW250A1 and FW300A1 Power Modules:
SUPPLY
V
V
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.
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
O
O
RESISTANCE
(+)
(–)
CONTACT
=
------------------------------------------------- - x 100
Measurement Test Setup
V
Measurement Test Setup
V
I
O
I
I
+ – V
+ – V
COPPER STRIP
1.0 µF
V
V
I
I
(+)
(–)
O
I
– I
– I
SENSE(+)
SENSE(–)
10.0 µF
V
V
I
O
O
O
(+)
(–)
SCOPE
at 100 kHz)
DISTRIBUTION LOSSES
I
O
CONTACT AND
%
RESISTIVE
LOAD
LOAD
8-513 (C).m
8-683 (C).f
9