Preliminary Product Brief *
For Discussion with Tyco Electronics Customers Only – Tyco Electronics Proprietary
I) This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should be followed.
II) CSA is a registered trademark of Canadian Standards Association.
III) UL is a registered trademark of Underwriters Laboratories, Inc.
IV) VDE is a trademark of Verband Deutcher Elektrotechniker e.V.
(approval pending)
The QRW-series dc-dc converters are a new
generation of DC/DC power modules designed for
optimum efficiency and power density. The QRW
provides 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 technology 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.
QRW 40A single output series
• Delivers up to 40A output current
• Ultra High Efficiency: 91% @ 3.3V full load
• Improved Thermal Performance:
25A at 70°C at 1ms-1 (200LFM)
• High power density: 100W/in³
• Low output voltages down to 1V:
supports migration to future IC and
microprocessor supply voltages
• Active load sharing option: Paralleling
• Cost efficient open frame design
• Optional heat-sink: to permit operation
over extended ambient temperature ranges
Applications
• Wireless Networks
• Access and Optical Network Equipment
• Enterprise Networks
• Latest generation ICs (DSP, FPGA, ASIC)
and Microprocessor powered applications
Specification
• Tightly regulated output, typical ±1%
• Monotonic start-up into pre-biased output
• Output voltage adjustment trim +10% / -20%
• Load regulation ± 0.2%
• Line regulation ± 0.2%
• No minimum load required
• Ripple and noise (5Hz to 20MHz bandwidth)
– RMS 40mVrms (3.3V)
– Peak to peak 150mVpk-pk (3.3V)
• Operating temperature range: -40°C to 110°C
• Designed to meet basic insulation
• 1500Vdc isolation voltage
• Remote output voltage sensing
Protection
• Output overcurrent and overvoltage protection
• Over-temperature protection
• Input under voltage protection
Options
• Positive remote on/off logic
• Active load sharing (Paralleling)
• Case ground pin
• Auto restart after fault shutdown
• Heatsink
Industry standard Quarter brick DC/DC converter,
36Vdc-75Vdc (48V) input voltage range,
Output voltages available from 12V-1.0V
I II III IV
Phone: 800-253-0490 Fax: 408-732-2002 www.xp-foresight.com
QRW 40A single output series
High Efficiency Industry Standard Quarter Brick
Outline Drawing and Pin-out
Physical Dimensions and design
Industry standard, Quarter brick size
with external dimensions of
57.9mm x 36.8mm x 9.5mm
(2.28” x 1.45” x 0.375”)
Weight 38.0g (1.34oz)
The QRW series has a robust open frame
construction able to withstand industry
standard, through-hole handling, soldering
and cleaning processes.
Ordering Information
Please contact your Tyco Electronics sales representative for pricing, availability and optional features.
Product codes Input Voltage Output
Voltage(s) Output Current Efficiency Connector Type Comcodes
QRW010A0B1 48V (36-75Vdc) 12V 10A 92% Through hole T.B.D
QRW025A0A1 48V (36-75Vdc) 5V 25A 92% Through hole T.B.D
QRW035A0F1 48V (36-75Vdc) 3.3V 35A 91% Through hole T.B.D
QRW035A0G1 48V (36-75Vdc) 2.5V 35A 90% Through hole T.B.D
QRW040A0D1 48V (36-75Vdc) 2.0V 40A T.B.D Through hole T.B.D
QRW040A0Y1 48V (36-75Vdc) 1.8V 40A 87% Through hole T.B.D
QRW040A0M1 48V (36-75Vdc) 1.5V 40A 85% Through hole T.B.D
QRW040A0P1 48V (36-75Vdc) 1.2V 40A 84% Through hole T.B.D
QRW040A0S1R01 48V (36-75Vdc) 1.0V 40A 83% Through hole T.B.D
-1 Standard negative remote on/off logic
June 01
Page Number
* This preliminary product brief is only for discussion with customers to determine customer interest and requirements. Tyco Electronics makes no commitment to sample or
manufacture for sale this product. Tyco Electronics reserves the right to make changes to the product(s) or information contained herein without notice and makes no
representation with respect to the accuracy of the information herein. No liability is assumed as a result of their use or application. No rights under any patent accompany the
sale of any such product(s) or information.
© 2001 Tyco Electronics Power Systems, Inc., (Mesquite, Texas) All International Rights Reserved.
Phone: 800-253-0490 Fax: 408-732-2002 www.xp-foresight.com
