QSW025A0B1Z Datasheet, PDF (1/16 Pages) Lineage Power Corporation – 36 - 75Vdc Input; 12Vdc Output; 25A Output Current

Data Sheet
February 16, 2009
QSW025A0B Series Power Modules; DC-DC Converters
36-75Vdc Input; 12Vdc Output; 25A Output Current
RoHS Compliant
Applications
ƒ Distributed power architectures
ƒ Intermediate bus voltage applications
ƒ Servers and storage applications
ƒ Networking equipment including Power over
Ethernet (PoE)
Options
ƒ Negative Remote On/Off logic
ƒ Active load sharing (Parallel Operation)
ƒ Baseplate option (-H)
ƒ Auto restart after fault shutdown
ƒ Case ground pin
Features
ƒ Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
ƒ Compliant to ROHS EU Directive 2002/95/EC with lead
solder exemption (non-Z versions)
ƒ High efficiency – 95% at 12V full load
ƒ Delivers up to 25A output current
ƒ Low output ripple and noise
ƒ Industry standard Quarter brick:
57.9 mm x 36.8 mm x 10.6 mm
(2.28 in x 1.45 in x 0.42 in)
ƒ Constant switching frequency
ƒ Positive Remote On/Off logic
ƒ Output over current/voltage protection
ƒ Over temperature protection
ƒ Wide operating temperature range (-40°C to 85°C)
ƒ UL*Recognized to UL60950-1, CAN/CSA^† C22.2
No.60950-1, and EN60950-1(VDE ^‡ 0805-1) Licensed
ƒ CE mark meets 2006/95/EC directive^§
ƒ Meets the voltage and current requirements for ETSI
300-132-2 and complies with and licensed for Basic
insulation rating per EN60950-1
ƒ 2250 Vdc Isolation tested in compliance with IEEE
802.3^¤ PoE standards
ƒ ISO** 9001 certified manufacturing facilities
Description
The QSW025A0B series of dc-dc converters are a new generation of DC/DC power modules designed to support
12Vdc intermediate bus applications where multiple low voltages are subsequently generated using point of load
(POL) converters. The QSW025A0B series are enhanced from their predecessor QBW025A0B series, with
improvements to the internal shutdown control, improved response to input voltage transients, and inclusion of output
reverse current protection during startup. The QSW025A0B series operate from an input voltage range of 36 to
75Vdc and provide up to 25A output current at 12V in an industry standard quarter brick. The converter incorporates
synchronous rectification technology and innovative packaging techniques to achieve efficiency reaching 95% at 12V
full load. This leads to lower power dissipations such that for many applications a heat sink is not required.
The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. Built-
in filtering for both input and output minimizes the need for external filtering.
* 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-user equipment . All of the required procedures of end-use equipment should be followed.}
Document No: DS08-008 ver 1.1
PDF Name: QSW025A0B_ds.pdf