LW020 Lineage Power, LW020 Datasheet

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LW020

Manufacturer Part Number
LW020
Description
Manufacturer
Lineage Power
Datasheet

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Data Sheet
April 2008
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
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Options
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Distributed power architectures
Communication equipment
Computer equipment
Choice of remote on/off configuration
Case ground pin
Synchronization
Short pins: 2.79 mm ± 0.25 mm
Short pins: 3.68 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
(0.145 in. ± 0.010 in.)
LW020 Single-Output-Series Power Modules:
Features
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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-
‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
§ This product is intended for integration into end-use equipment.
tion.
All the required procedures for CE marking of end-use equip-
ment should be followed. (The CE mark is placed on selected
products.)
36 Vdc to 75 Vdc Inputs; 20 W
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
Wide input voltage range: 36 Vdc to 75 Vdc
Overcurrent protection
Output overvoltage protection
Input-to-output isolation: 1500 Vdc
Operating case temperature range: –40 °C to
+110 °C
Remote on/off
Output voltage adjustment: 90% to 110% of V
JQA Certified to EN60950
UL* 1950 Recognized, CSA
Certified, VDE
CE mark meets 73/23/EEC and 93/68/EEC
directives
Within FCC Class A radiated limits
§
0805 (EN60950, IEC950) Licensed
C22.2 No. 950-95
O, nom

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LW020 Summary of contents

Page 1

... Within FCC Class A radiated limits n 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 ...

Page 2

... C T –40 120 stg — — 1500 Symbol Min Typ — — I, max — — I — — — 60 April 2008 Unit Vdc V °C °C Vdc Max Unit 75 Vdc 1 0 — mAp-p — dB Lineage Power ...

Page 3

... Device Symbol LW020G V LW020F V LW020A V LW020B V LW020C V LW020G LW020F LW020A LW020B LW020C All All All LW020A LW020B, C LW020A LW020B, C LW020A LW020B LW020C All LW020C LW020B LW020A LW020G LW020F LW020A LW020B LW020C All = 25 °C): A All All All All 36 Vdc to 75 Vdc Inputs ...

Page 4

... All I on/off All V on/off April 2008 Typ Max Unit 0.002 — µF — — M¾ Typ Max Unit 4,500,000 hours — 54 (1.9) g (oz.) Min Typ Max Unit — — 1.0 mA –0.7 — 1.2 V — — — — 50 µA — — 1.2 V Lineage Power ...

Page 5

... All T O rise ) O, nom ; All — O, max LW020B — All others — LW020G V O, clamp LW020F V O, clamp LW020A V O, clamp LW020B V O, clamp LW020C V O, clamp 36 Vdc to 75 Vdc Inputs Min Typ Max Unit — — — 1.5 3.0 ms — ...

Page 6

... 40 nom O 20 nom O 0 50% 100 max NORMALIZED OUTPUT CURRENT, I Figure 2. LW020A and G Typical Output Characteristics ° 0 (V) Figure 3 ...

Page 7

... 75 max O 50% 1.0 1.2 1.4 1 max O (A) O 8-1484(C) Figure 8. LW020A and G Typical Output 36 Vdc to 75 Vdc Inputs 0.2 0.4 0.6 0.8 OUTPUT CURRENT, I (A) O Output Current °C A TIME, t (100 µs/div) Voltage for a Step Load Change from 50% to 75% 1 ...

Page 8

... V , nom O 50 nom O 0 TIME ms/div) Figure 10. LW020A and G Typical Output Voltage Start-Up when Signal Applied to Remote On/Off 8 8 Test Configurations TO OSCILLOSCOPE C 220 µF S IMPEDANCE < 0.1 Ω BATTERY @ 20 ˚C, 100 kHz Note: Input reflected-ripple current is measured with a simulated source impedance of 12 µ ...

Page 9

... Note: Do not ground either of the input pins of the module without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pins and ground. Lineage Power 36 Vdc to 75 Vdc Inputs The power module has extra-low voltage (ELV) outputs when all inputs are ELV. ...

Page 10

... LW020A 4.02 16.90 LW020B 15.40 15.40 LW020C 21.50 16.90 The adjusted output voltage cannot exceed 110% of the nominal output voltage between the V minal. The modules have a fixed current-limit set point. Therefore, as the output voltage is adjusted down, the available output power is reduced. In addition, the minimum output current is a function of the output voltage. As the output voltage is adjusted down, the minimum required output current can increase ...

Page 11

... Therefore, the natural convec- tion condition represents airflow rates 0.3 ms (60 ft./min.). Use of Figure 16 is shown in the following example. Example What is the minimum airflow necessary for a LW020A operating output current of 3.6 A, and a I maximum ambient temperature of 85 °C? ...

Page 12

... Vdc to 75 Vdc Inputs Thermal Considerations Heat Transfer (continued) 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.4 0.9 1.4 1.9 2.4 OUTPUT CURRENT, I Figure 17. LW020F and G Power Dissipation vs. Output Current ° 0.0 0.5 1.0 1.5 2.0 OUTPUT CURRENT, I Figure 18. LW020A Power Dissipation vs. Output Current 12 12 (continued ...

Page 13

... Figure 21. Note that the module and the printed-wiring board (PWB) that it is mounted on are vertically oriented. The passage has a rectangular cross section. Note: Dimensions are in millimeters and (inches) Layout Considerations Copper paths must not be routed beneath the power module standoffs. Lineage Power FACING PWB AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED 76 (3 ...

Page 14

... Note: For standard modules, V (+) is internally connected to the case. I Top View Side View Bottom View 14 April 2008 Pin Function 1 REMOTE ON/OFF 2 No Connec- tion (sync fea- ture optional (– (+) I 5 CASE Pin (pin optional) 6 TRIM 7 V (– (+) O 8-1198(C).g Lineage Power ...

Page 15

... Device Code Suffix Vdc to 75 Vdc Inputs 12.4 (0.49) 2.54 (0.100) 50.8 (2.00) 7.62 (0.300) 17.78 (0.700) DRILL HOLE OF APPROX. 2.54 (0.100) DIAMETER TO RECESS STANDOFFS IF LOWER HEIGHT IS NEEDED Device Code Comcode LW020G 108258195 LW020F 107640807 LW020A 107314304 LW020B 107681033 LW020C 107640799 8-1198(C).g 15 ...

Page 16

... Lineage Power reserves the right to make changes to the produc t(s) or information contained herein without notice. No liability is ass umed as a res ult of their use or applic ation. No rights under any patent acc ompany the sale of any oduct information. ...

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