LW005F Lineage Power, LW005F Datasheet - Page 10

• Manufacturer Part Number: LW005F
• Description: CONVERTER DC/DC 3.3V 4W OUT
• Manufacturer: Lineage Power
• Series: LW005r
• Type: Isolated with UVLOr

Specifications of LW005F

• Output: 3.3V
• Number Of Outputs: 1
• Power (watts): 5W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 5-DIP Module
• 1st Output: 3.3 VDC @ 1.21A
• Size / Dimension: 1.26" L x 1.00" W x 0.40" H (32mm x 25.4mm x 10.2mm)
• Power (watts) - Rated: 4W
• Operating Temperature: -40°C ~ 105°C
• Efficiency: 74%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: No

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 5 W
Test Configurations
Figure 17. Peak-to-Peak Output Noise
Figure 18. Output Voltage and Efficiency
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance input source (see Figure 16). Highly
inductive source impedances can affect the stability of
the power module. If the source inductance exceeds
5 µH, a 33 µF electrolytic capacitor (ESR < 0.7 ¾ at
100 kHz) mounted close to the power module helps
ensure stability of the unit.
10
10
Note: Use one external 0.1 µF ceramic capacitor. Scope measure-
CONTACT RESISTANCE
Note: All measurements are taken at the module terminals. When
SUPPLY
V
V
ment should be made using a BNC socket. Position the load
between 50 mm and 75 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
(+)
(–)
η
=
Measurement Test Setup
Measurement Test Setup
I
⎛
⎝
I
[
----------------------------------------------- -
V
[
O
V
COPPER STRIP
(+) V
I
(+)
V
V
–
I
I
–
(+)
(-)
0.1 μF
V
O
I
(–)
(–)
V
V
O
(continued)
O
]I
(+)
(-)
]I
I
O
⎞
⎠
SCOPE
×
DISTRIBUTION LOSSES
100
I
O
CONTACT AND
RESISTIVE
LOAD
%
LOAD
8-513(C)
8-204(C)
Safety Considerations (LC Modules)
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard,
i.e., UL 1950, CSA C22.2 No. 950-95, and VDE 0805
(EN60950, IEC950).
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements.
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 5 A normal-blow fuse in the ungrounded lead.
Safety Considerations (LW Modules)
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard,
i.e., UL 1950, CSA C22.2 No. 950-95, and VDE 0805
(EN60950, IEC950).
If the input source is non-SELV (ELV or a hazardous
voltage greater than 60 Vdc and less than or equal to
75 Vdc), for the module's output to be considered
meeting the requirements of safety extra-low voltage
(SELV), all of the following must be true:
n
n
n
n
Note: Do not ground either of the input pins of the
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 5 A normal-blow fuse in the ungrounded lead.
The input source is to be provided with reinforced
insulation from any other hazardous voltages, includ-
ing the ac mains.
One V
both the input and output pins are to be kept floating.
The input pins of the module are not operator acces-
sible.
Another SELV reliability test is conducted on the
whole system, as required by the safety agencies, on
the combination of supply source and the subject
module to verify that under a single fault, hazardous
voltages do not appear at the module's output.
module without grounding one of the output
pins. This may allow a non-SELV voltage to
appear between the output pins and ground.
I
pin and one V
O
pin are to be grounded or
Lineage Power
April 2008