Advanced Data Sheet
February 10, 2011
QBDW033A0B Series Power Modules; DC-DC Converters
36-75Vdc Input; 9.6-12Vdc Output; 33A Output Current
BARRACUDA™ SERIES
Features
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Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
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Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
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High and flat efficiency profile >95.0% at 12Vdc, 30%
to 100% rated output
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Wide input voltage range: 36-75Vdc
Delivers up to 33Adc output current
Remote sense and output voltage trim
Fully regulated output voltage
Output voltage adjust: 8.1Vdc to 13.2Vdc
Low output ripple and noise
RoHS Compliant
Industry standard, DOSA compliant, Quarter brick:
57.9 mm x 36.8 mm x 10.6 mm
Applications
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Distributed power architectures
Intermediate bus voltage applications
(2.28 in x 1.45 in x 0.42 in)
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Constant switching frequency
Servers and storage applications
Positive remote On/Off logic
Networking equipment including Power over
Ethernet (PoE)
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Output over current/voltage protection
Digital interface with PMBus™ Rev.1.1 compliance
Over temperature protection
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Fan assemblies other systems requiring a tightly
regulated output voltage
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Wide operating temperature range (-40°C to 85°C)
UL* 60950-1 Recognized, CSA† C22.2 No. 60950-1-
03 Certified, and VDE‡ 0805:2001-12 (EN60950-1)
Licensed
Options
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Negative Remote On/Off logic
Active load sharing (Parallel Operation)
Baseplate option (-H)
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CE mark 73/23/EEC and 96/68/EEC directives§
Meets the voltage and current requirements for ETSI
300-132-2 and complies with and licensed for Basic
insulation rating per EN60950-1
Auto restart after fault shutdown
.
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2250 Vdc Isolation tested in compliance with IEEE
802.3¤ PoE standards
ISO** 9001 and ISO14001 certified manufacturing
facilities
Description
The QBDW033A0B series of dc-dc converters are a new generation of DC/DC power modules designed to support
9.6 -12Vdc intermediate bus applications where multiple low voltages are subsequently generated using point of load
(POL) converters, as well as other application requiring a tightly regulated output voltage. The QBDW033A0B series
operate from an input voltage range of 36 to 75Vdc and provide up to 33A output current at output voltages from
8.1Vdc to 12Vdc in a DOSA standard quarter brick. The converter incorporates digital control, synchronous rectification
technology, a fully regulated control topology, and innovative packaging techniques to achieve efficiency approaching
97% peak at 12Vdc output. This leads to lower power dissipations such that for many applications a heat sink is not
required. Standard features include output voltage trim, remote sense, on/off control, output overcurrent and over
voltage protection, over temperature protection, input under and over voltage lockout, power good signal and PMBus
interface.
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.
Document No: ADS10-006 ver 0.3
PDF Name: QBDW033A0B_ADS.pdf
*
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.
†
‡
§
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