Data Sheet
March 27, 2008
QBK020A Series Power Modules; DC-DC Converters
36-55 Vdc Input; 12Vdc Output; 20A Output Current
RoHS Compliant
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
Exceptionally High power density: 173 W/in
High efficiency – 94% at 12V full load
Thermal Performance: 8A at 70ºC at 1m/s
(200LFM)
Delivers up to 20A output current
Low output ripple and noise
Industry standard Quarter brick:
3
Applications
Distributed power architectures
Intermediate bus voltage applications
Servers and storage applications
Networking equipment
57.9 mm x 36.8 mm x 10.6 mm
(2.28 in x 1.45 in x 0.42 in)
Cost efficient open frame design
Single optimal regulated output
Narrow input voltage range
Positive Remote On/Off logic
Output over current/voltage protection
Over temperature protection
Wide operating temperature range (-40°C to
85°C)
ISO* 9001 certified manufacturing facilities
Complies with and is licensed for Basic Insulation
rating per EN60950-1
UL**
60950-1 Recognised,
CSA
†
C22.2 No.
60950-1-03 Certified, and
VDE
‡
0805 (IEC60950,
rd
3 Edition) Licensed
CE mark meets 2006/95/EC directive
§
Options
Negative Remote On/Off logic
Active load sharing (Parallel Operation)
Baseplate option (-H)
Auto restart after fault shutdown
Description
The QBK-series dc-dc converters are a new generation of DC/DC power modules designed to support 12Vdc
intermediate bus applications where multiple low voltages are generated using discrete/modular point of load
(POL) converters. The QBK series provide up to 20A output current in an industry standard quarter brick, which
makes it an ideal choice for small space, high current and 12V intermediate bus voltage applications. The
converter incorporates synchronous rectification technology and innovative packaging techniques to achieve ultra
high efficiency reaching 94% at 12V full load. The ultra high efficiency of this converter leads to lower power
dissipation such that for most applications a heat sink is not required. The QBK series power modules are isolated
dc-dc converters that operate over a narrow input voltage range of 36 to 55 Vdc and provide single optimal
regulated output. 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.
* ISO is a registered trademark of the International Organization of Standards
**
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 of the required procedures of end-use equipment should be followed.
Document No: DS03-077 ver. 1.44
PDF Name: qbus-qbk020a.pdf
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
