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LW020 Schematic ( PDF Datasheet ) - Lineage Power

Teilenummer LW020
Beschreibung Single-Output-Series Power Modules
Hersteller Lineage Power
Logo Lineage Power Logo 




Gesamt 16 Seiten
LW020 Datasheet, Funktion
Data Sheet
April 2008
LW020 Single-Output-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 20 W
The LW020 Single-Output-Series Power Modules use
advanced, surface-mount technology and deliver high-qual-
ity, compact, dc-dc conversion at an economical price.
Applications
n Distributed power architectures
n Communication equipment
n Computer equipment
Options
n Choice of remote on/off configuration
n Case ground pin
n Synchronization
n Short pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
n Short pins: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.)
Features
n Low profile: 9.91 mm (0.390 in.) with 0.38 mm
(0.015 in.) standoffs, 9.53 mm (0.375 in.) with
standoffs recessed
n Wide input voltage range: 36 Vdc to 75 Vdc
n Overcurrent protection
n Output overvoltage protection
n Input-to-output isolation: 1500 Vdc
n Operating case temperature range: –40 °C to
+110 °C
n Remote on/off
n Output voltage adjustment: 90% to 110% of VO, nom
n JQA Certified to EN60950
n UL* 1950 Recognized, CSAC22.2 No. 950-95
Certified, VDE0805 (EN60950, IEC950) Licensed
n CE mark meets 73/23/EEC and 93/68/EEC
directives§
n Within FCC Class A radiated limits
Description
The LW020 Single-Output-Series Power Modules are
low-profile dc-dc converters that operate over an
input voltage range of 36 Vdc to 75 Vdc and provide
precisely regulated outputs. The outputs are isolated
from the input, allowing versatile polarity configura-
tions and grounding connections. Built-in filtering for
both input and output minimizes the need for external
filtering. The modules have a maximum power rating
of 20 W at a typical full-load efficiency of up to 85%.
* UL is a registered trademark of Underwriters Laboratories, Inc.
CSA is a registered trademark of Canadian Standards Associa-
tion.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
§ This product is intended for integration into end-use equipment.
All the required procedures for CE marking of end-use equip-
ment should be followed. (The CE mark is placed on selected
products.)
Free Datasheet http://www.datasheet4u.com/






LW020 Datasheet, Funktion
LW020 Single-Output-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 20 W
Data Sheet
April 2008
Characteristics Curves
1.0
0.9
0.8 PO = 20 W
0.7 PO = 10 W
0.6 PO = 2 W
0.5
0.4
0.3
0.2
0.1
0.0
0 10 20 30 40 50 60 70 80
INPUT VOLTAGE, V I (V)
8-1481(C).a
Figure 1. LW020 Typical Input Characteristics,
TA = 25 °C
100%
VO, nom
80%
VO, nom
60%
VO, nom
40%
VO, nom
20%
VO, nom
VI = 75
VI = 54
VI = 36
0
0
50%
100%
150%
IO, max
IO, max
IO, max
NORMALIZED OUTPUT CURRENT, IO (A)
8-1258(C).a
Figure 2. LW020A, B, C, F, and G Typical Output
Characteristics, TA = 25 °C
76
74
72
70
68
66
VI = 36 V
64 VI = 48 V
VI = 75 V
62
60
0.4 0.9 1.4 1.9 2.4 2.9 3.4 3.9
OUTPUT CURRENT, IO (A)
8-1483(C).a
Figure 3. LW020G Typical Converter Efficiency vs.
Output Current, TA = 25 °C
80
79
78
77
76
75
74
VI = 75
73
VI = 54
72
VI = 36
71
70
0.0 0.5
1.0 1.5
2.0 2.5 3.0
3.5 4.0
OUTPUT CURRENT, IO (A)
8-1483(C)
Figure 4. LW020F Typical Converter Efficiency vs.
Output Current, TA = 25 °C
6 Lineage Power
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6 Page









LW020 pdf, datenblatt
LW020 Single-Output-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 20 W
Data Sheet
April 2008
Thermal Considerations (continued)
Heat Transfer (continued)
6
5
4.5
4.0
3.5
3.0
2.5
2.0
VI = 36 V
1.5 VI = 48 V
1.0 VI = 75 V
0.5
0.4 0.9 1.4 1.9 2.4 2.9 3.4 3.9
OUTPUT CURRENT, IO (A)
8-1478(C).a
Figure 17. LW020F and G Power Dissipation vs.
Output Current, TA = 25 °C
6
5
4
3
2
1
0
0.0 0.5
VI = 75
VI = 48
VI = 36
1.0 1.5 2.0 2.5
3.0 3.5 4.0
OUTPUT CURRENT, IO (A)
8-1275(C).a
Figure 18. LW020A Power Dissipation vs. Output
Current
4
VI = 75
3
2
1
VI = 36
VI = 54
0
0.0 0.2
0.4 0.6 0.8
1.0 1.2
1.4 1.6
OUTPUT CURRENT, IO (A)
8-1479(C)
Figure 19. LW020B Power Dissipation vs. Output
Current, TA = 25 °C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.0
VI = 75
VI = 54
VI = 36
0.2 0.4 0.6 0.8
OUTPUT CURRENT, IO (A)
1.0
1.2
8-1477(C)
Figure 20. LW020C Power Dissipation vs. Output
Current, TA = 25 °C
12 Lineage Power
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12 Page





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