Data Sheet
June 15, 2009
QRW010/025/035/040 Series Power Modules; dc-dc Converters
36 Vdc - 75 Vdc Input, 1.0 to 12 Vdc Output; 10 A to 40 A
Features
RoHS Compliant
n
Compatible with RoHS EU Directive 2002/95/EC (-Z Ver-
sions)
n
Compatible in RoHS EU Directive 2002/95/EC with lead
solder exemption (non -Z versions)
n
Delivers up to 40A output current
n
n
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)
n
Improved Thermal performance
23A at 70°C at 1ms-1 (200LFM) for 3.3Vo
n
n
n
High power density: 100W/in3
Low output ripple and noise
Low output voltages down to 1V:
Supports migration to future IC and microprocessor supply
voltages
Applications
n
2:1 input voltage
n
n
n
n
n
Enterprise Networks
n
n
n
n
n
n
n
Remote Sense
Wireless Networks
Remote On/Off
Access and Optical Network Equipment
Enterprise Networks
Constant switching frequency
Output overvoltage and Overcurrent protection
Overtemperature protection
Adjustable output voltage (+10% / -20%)
Meets the voltage and current requirements for
Latest generation IC’s (DSP, FPGA, ASIC) and Micropro-
cessor-powered applications.
Options
ETSI 300-132-2 and complies with and is approved for
Basic Insulation rating per EN60950-1
n
n
n
Positive Remote On/Off logic
UL* 60950 Recognized, CSA† C22.2 No. 60950-00 Certi-
Case ground pin (-H Base plate version)
Auto restart after fault shutdown
n
fied, and VDE‡ 0805 (IEC60950, 3rd edition) Licensed
n
n
CE mark meets 73/23/EEC and 93/68/EEC directives§
ISO** 9001 certified manufacturing facilities
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 40A 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 rectification technol-
ogy and innovative packaging techniques to achieve ultra 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.
*
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.)
Document Name: DS03-113 ver. 4.3
** ISO is a registered trademark of the Internation Organization of Standards
PDF Name: qrw-series_ds.pdf