Data Sheet
March 27, 2008
QRW025 Series Power Modules; dc-dc Converters
36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A
Features
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RoHS Compliant
Compatible with RoHS EU Directive 200295/EC (-Z Ver-
sions)
Compatible in RoHS EU Directive 200295/EC with lead
solder exemption (non -Z versions)
Delivers up to 25A output current
Ultra High efficiency: 91% at 3.3V full load
Industry standard Quarter Brick:
57.9 mm x 36.8 mm x 9.5 mm
(2.28 in x 1.45 in x 0.375 in)
Improved Thermal performance
25A at 70°C at 1ms-1 (200LFM) for 3.3Vo
High power density
Low output ripple and noise
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Applications
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Low output voltages down to 1V:
Supports migration to future IC and microprocessor supply
voltages
2:1 input voltage
Remote Sense
Remote On/Off
Constant switching frequency
Output overvoltage and Overcurrent protection
Overtemperature protection
Adjustable output voltage (+10% / -20%)
Enterprise Networks
Wireless Networks
Access and Optical Network Equipment
Enterprise Networks
Latest generation IC’s (DSP, FPGA, ASIC) and Micropro-
cessor-powered applications.
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Options
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Positive Remote On/Off logic
Case ground pin (-H Base plate version)
Auto restart after fault shutdown
Meets the voltage and current requirements for
ETSI 300-132-2 and complies with and is approved for
Basic Insulation rating per EN60950-1
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UL*
60950 Recognized,
CSA
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C22.2 No. 60950-00 Certi-
fied, and VDE
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0805 (IEC60950, 3rd edition) Licensed
CE mark meets 73/23/EEC and 93/68/EEC directives
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ISO** 9001 certified manufacturing facilities
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Description
The QRW-series dc-dc converters are a new generation of DC/DC power modules designed for optimum
efficiency and power density. The QRW series provide up to 25A output current in an industry standard quarter brick, which
makes it an ideal choice for small space, high current and low voltage applications. The converter uses synchronous rectifi-
cation technology and innovative packaging techniques to achieve high efficiency reaching 91% at 3.3V full load. Thanks to
the ultra high efficiency of this converter, the power dissipation is such that for most applications a heat sink is not required.
In addition, the QRW-series supports future migration of semiconductor and microprocessor supply voltages down to 1.0V.
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UL
is a registered trademark of Underwriters Laboratories, Inc.
CSA
is a registered trademark of Canadian Standards Association.
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 equipment should be followed. (The CE mark is placed on selected products.)
ISO is a registered trademark of the Internation Organization of Standards
Document Name:
PDF Name:qrw025-series_ds.pdf
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
