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PDF QBDW033A0B Data sheet ( Hoja de datos )
| Número de pieza | QBDW033A0B | |
| Descripción | Power Modules; DC-DC Converters | |
| Fabricantes | Lineage Power | |
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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
RoHS Compliant
Applications
Distributed power architectures
Intermediate bus voltage applications
Servers and storage applications
Networking equipment including Power over
Ethernet (PoE)
Fan assemblies other systems requiring a tightly
regulated output voltage
Options
Negative Remote On/Off logic
Active load sharing (Parallel Operation)
Baseplate option (-H)
Auto restart after fault shutdown
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)
High and flat efficiency profile >95.0% at 12Vdc, 30%
to 100% rated output
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
Industry standard, DOSA compliant, Quarter brick:
57.9 mm x 36.8 mm x 10.6 mm
(2.28 in x 1.45 in x 0.42 in)
Constant switching frequency
Positive remote On/Off logic
Output over current/voltage protection
Digital interface with PMBus™ Rev.1.1 compliance
Over temperature protection
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
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
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
www.DataSheet4Ut9e7.cc%honmpoeloagkya, ta1f2uVllydcroeugtuplautte. dThciosnletraodl stotpoolloowgye,r
and innovative packaging techniques to achieve efficiency
power dissipations such that for many applications a heat
approaching
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.
* 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: ADS10-006 ver 0.3
PDF Name: QBDW033A0B_ADS.pdf
1 page  
Advanced Data Sheet
February 10, 2011
QBDW033A0B Series Power Modules; DC-DC Converters
36-75Vdc Input; 9.6-12Vdc Output; 33A Output Current
Characteristic Curves
The following figures provide typical characteristics for the QBDW033A0B (12V, 33A) at 25ºC. The figures are identical for
either positive or negative Remote On/Off logic.
INPUT VOLTAGE, VO (V)
Figure 1. Typical Input Characteristic at Room
Temperature.
TIME, t (10 ms/div)
Figure 4. Typical Start-Up Using Remote On/Off with
Vin applied, negative logic version shown.
OUTPUT CURRENT, IO (A)
Figure 2. Typical Converter Efficiency Vs. Output
current at Room Temperature.
TIME, t (500 μs/div)
Figure 5. Typical Transient Response to Step change
in Load from 25% to 50% to 25% of Full Load at Room
Temperature and 48 Vdc Input.
TIME, t (20 ms/div)
www.DataSheetF4Uig.ucroem3. Typical Start-Up Using Vin with Remote
On/Off enabled, negative logic version shown.
TIME, t (500 μs/div)
Figure 6. Typical Transient Response to Step Change
in Load from 50% to 75% to 50% of Full Load at Room
Temperature and 48 Vdc Input.
LINEAGE POWER
5
5 Page 
Advanced Data Sheet
February 10, 2011
QBDW033A0B Series Power Modules; DC-DC Converters
36-75Vdc Input; 9.6-12Vdc Output; 33A Output Current
Feature Descriptions (continued)
The output power of the module should not exceed the
rated power for the module as listed in the Ordering
Information table.
Although the maximum THx temperature of the power
modules is 110 °C - 125 °C, you can limit this temperature
to a lower value for extremely high reliability.
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame Board-Mounted
Power Modules” for a detailed discussion of thermal
aspects including maximum device temperatures.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. The thermal derating of figure 16
shows the maximum output current that can be delivered by
each module in the indicated orientation without exceeding
the maximum THx temperature versus local ambient
temperature (TA) for air flows of, Natural Convection, 1 m/s
(200 ft./min), 2 m/s (400 ft./min).
The use of Figures 16 is shown in the following example:
Example
What is the minimum airflow necessary for a
QBDW033A0B operating at VI = 48 V, an output current of
22A, and a maximum ambient temperature of 70 °C in
transverse orientation.
Solution:
Given: Vin= 48V, IO = 22A, TA = 70 °C
Determine required airflow (V) (Use Figure 16):
V = tbd or greater.
LOCAL AMBIENT TEMPERATURE, TA (C)
Figure 16. Output Current Derating for the Open
Frame QBDW033A0B in the Transverse Orientation;
Airflow Direction from Vin(+) to Vin(-); Vin = 48V.
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