QW050A81

Manufacturer Part NumberQW050A81
DescriptionCONVERTER DC/DC 5V 50W OUT
ManufacturerLineage Power
SeriesQW
TypeIsolated with Remote On/Off
QW050A81 datasheets

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Specifications of QW050A81

Output5VNumber Of Outputs1
Power (watts)50WMounting TypeThrough Hole
Voltage - Input36 ~ 75VPackage / Case8-DIP Module
1st Output5 VDC @ 10ASize / Dimension2.28" L x 1.45" W x 0.50" H (57.9mm x 36.8mm x 12.7mm)
Power (watts) - Rated50WOperating Temperature-40°C ~ 100°C
Efficiency84%ApprovalsCE, CSA, UL, VDE
Lead Free Status / RoHS StatusContains lead / RoHS non-compliant3rd Output-
2nd Output-4th Output-
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April 2008
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 W and 75 W
The QW Series Power Modules use advanced, surface-mount
technology and deliver high-quality, efficient, and compact
dc-dc conversion.
Applications
Distributed power architectures
n
Workstations
n
Computer equipment
n
Communications equipment
n
Options
Heat sinks available for extended operation
n
Auto-restart after overcurrent shutdown
n
Description
The QW050A1 and QW075A1 Power Modules are dc-dc converters that operate over an input voltage range of
36 Vdc to 75 Vdc and provide a precisely regulated dc output. The outputs are fully isolated from the inputs,
allowing versatile polarity configurations and grounding connections. The modules have maximum power rat-
ings from 50 W to 75 W at a typical full-load efficiency of 84%.
The sealed modules offer a metal baseplate for excellent thermal performance. Threaded-through holes are pro-
vided to allow easy mounting or addition of a heat sink for high-temperature applications. The standard feature set
includes remote sensing, output trim, and remote on/off for convenient flexibility in distributed power applications.
QW050A1 and QW075A1 Power Modules:
Features
Small size: 36.8 mm x 57.9 mm x 12.7 mm
n
(1.45 in. x 2.28 in. x 0.50 in.)
High power density
n
High efficiency: 84% typical
n
Low output noise
n
Constant frequency
n
Industry-standard pinout
n
Metal baseplate
n
2:1 input voltage range
n
Overvoltage and overcurrent protection
n
Remote on/off
n
Remote sense
n
Adjustable output voltage
n
Overtemperature protection
n
ISO* 9001 Certified manufacturing facilities
n
†
UL
1950 Recognized, CSA
n
Certified, and VDE
Licensed
CE mark meets 73/23/EEC and 93/68/EEC direc-
n
tives**
* ISO is a registered trademark of the International Organization
for Standardization.
† 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.)
‡
C22.2 No. 950-95
§
0805 (EN60950, IEC950)

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QW050A81 Summary of contents

  • Page 1

    April 2008 dc-dc Converters Vdc Input, 5 Vdc Output and 75 W The QW Series Power Modules use advanced, surface-mount technology and deliver high-quality, efficient, and compact dc-dc conversion. Applications Distributed power architectures n Workstations ...

  • Page 2

    ... C T –55 stg — — Symbol Min Typ — — I, max I — — I, max — — I — — — 60 April 2008 Max Unit 75 Vdc 100 V 100 °C 125 °C 1500 Vdc Max Unit 75 Vdc 2 — mAp-p — dB Lineage Power ...

  • Page 3

    ... Settling Time (V < 10% of peak deviation Consult your sales representative or the factory. † These are manufacturing test limits. In some situations, results may differ. Table 3. Isolation Specifications Parameter Isolation Capacitance Isolation Resistance Lineage Power (continued) Device Symbol All V O, set All V All ...

  • Page 4

    ... April 2008 Typ Max 4,000,000 hours 3,500,000 hours — 75 (2.7) g (oz.) Min Typ Max 0 — 1.2 — — 1.0 — — 15 — — 50 — — — 0.5 60 — 110 %V 5.7* — 6.8* — 105 — C Lineage Power Unit Unit µ nom V °C ...

  • Page 5

    ... INPUT VOLTAGE, V Figure 1. Typical QW050A1 Input Characteristics at Room Temperature 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 INPUT VOLTAGE, V Figure 2. Typical QW075A1 Input Characteristics at Room Temperature Lineage Power (V) I 8-2949 (F) Note: Pending improvement will add 1% to the above curves. Figure 3. Typical QW050A1 Converter Efficiency ...

  • Page 6

    ... Figure 8. Typical QW075A1 Transient Response max Step Decrease in Load from 50 max 54 Vdc Input (Waveform Averaged to Eliminate Ripple Component.) April 2008 TIME, t (500 μs/div) 8-2952 (F) at Room Temperature and TIME, t (200 ns/div) 8-2953 (F) at Room Temperature and Lineage Power ...

  • Page 7

    ... Step Increase in Load from 50 Room Temperature and O, max 54 Vdc Input (Waveform Averaged to Eliminate Ripple Component.) Lineage Power Note: Tested with a 1000 µF aluminum and a 1.0 µF ceramic capaci- 8-2954 (F) tor across the load. Figure 11. QW050A1 Typical Start-Up from Remote On/Off; I ...

  • Page 8

    ... The power module has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units provided with a maxi- mum 3 A normal-blow fuse in the ungrounded lead. % April 2008 pin and one V pin are to be grounded Lineage Power ...

  • Page 9

    ... V. The maximum allowable leakage current of the switch at V on/off If not using the remote on/off feature, short the ON/OFF pin to V (–). I Lineage Power I V Figure 16. Remote On/Off Implementation Remote Sense Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections ...

  • Page 10

    ... Figure 18. Circuit Configuration to Decrease 1M 100k 10k 1k 510 ⎞ kΩ – --------- - 10.2 ⎠ Δ% Figure 19. Resistor Selection for Decreased (–) terminals O V (+) O SENSE(+) TRIM R adj-down SENSE(–) V (–) O Output Voltage CHANGE IN OUTPUT VOLTAGE (Δ %) Output Voltage Lineage Power April 2008 R LOAD 8-748 (C).b 40 8-2577 (C) ...

  • Page 11

    ... The overvoltage latch is reset by either cycling the input power for 1.0 second or by tog- gling the on/off signal for 1.0 second. Lineage Power Overtemperature Protection These modules feature an overtemperature protection circuit to safeguard against thermal damage. The cir- cuit shuts down and latches off the module when the maximum case temperature is exceeded ...

  • Page 12

    ... Figure 23. QW050A1 Power Dissipation vs Note: Pending improvement will lower the power dissipation. Figure 24. QW075A1 Power Dissipation vs. April 2008 SEE NOTE OUTPUT CURRENT, I (A) O Output Current at 25 ° SEE NOTE OUTPUT CURRENT, I (A) O Output Current at 25 °C Lineage Power 9 10 8-2957 (F) 8-2958 (F) ...

  • Page 13

    ... Figures 26 and 27. Longitudinal orientation is defined as the long axis of the module that is parallel to the air- flow direction, whereas in the transverse orientation, the long axis is perpendicular to the airflow. These curves were obtained by experimental testing of heat sinks, which are offered in the product catalog. Lineage Power (continued (continued) 9 ...

  • Page 14

    ... IN. HEAT SINK NO HEAT SINK LOCAL AMBIENT TEMPERATURE, T (˚C) A 1.0 m/s (200 lfm); Transverse Orientation 1 IN. HEAT SINK 1/2 IN. HEAT SINK 1/4 IN. HEAT SINK NO HEAT SINK LOCAL AMBIENT TEMPERATURE, T (˚C) A 1.0 m/s (200 lfm); Longitudinal Orientation Lineage Power 90 100 8-2382 (C) 90 100 8-2383 (C) ...

  • Page 15

    ... The minimum airflow necessary for the QW075A1 module is 1.2 m/s (240 ft./min.). Note: Pending improvement will lower the power dissi- pation and reduce the airflow needed. Lineage Power Custom Heat Sinks (continued) A more detailed model can be used to determine the (continued) required thermal resistance of a heat sink to provide necessary cooling ...

  • Page 16

    ... MIN, 2 PLACES 1.57 (0.062) DIA SOLDER-PLATED BRASS, 2 PLACES MOUNTING INSERTS 12.7 (0.50 0.5 THROUGH, 4 PLACES 3.81 11.43 (0.150) (0.450) V (–) O 7.62 – SENSE (0.300) 15.24 TRIM (0.600) + SENSE V (+) O Lineage Power April 2008 8-1769 (F).b ...

  • Page 17

    ... Optional features can be ordered using the suffixes shown in Table 5. The suffixes follow the last letter of the device code and are placed in descending order. For example, the device codes for a QW050A1 module with the following options are shown below: Auto-restart after overcurrent shutdown Table 5. Device Options Option Auto-restart after overcurrent shutdown Lineage Power 47.2 (1.86) V (+) V (+) ...

  • Page 18

    ... Figure 33. Longitudinal Heat Sink 18 18 1/4 IN. 1.450 ± 0.015 (36.83 ± 0.38) 1/2 IN. 1 IN. 8-2473 (F) April 2008 Comcode 848060992 848061008 848061016 848061024 848061032 848061040 1/4 IN. 1/2 IN. 1 IN. 1.850 ± 0.005 (47.24 ± 0.13) Figure 34. Transverse Heat Sink Lineage Power 8-2472 (F) ...

  • Page 19

    ... April 2008 dc-dc Converters Vdc Input, 5 Vdc Output and 75 W Notes Lineage Power 19 ...

  • Page 20

    ... 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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