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PDF QBW018A0B Data sheet ( Hoja de datos )
| Número de pieza | QBW018A0B | |
| Descripción | Power Modules | |
| Fabricantes | Lineage Power | |
| Logotipo |  |
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Data Sheet
January 26, 2011
QBW018A0B Series Power Modules, DC - DC Converters:
36 – 75Vdc Input; 12Vdc Output; 18A Output Current
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
RoHS Compliant
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Options
Negative Remote On/Off logic
Active load sharing (Parallel Operation)
Baseplate option (-H)
Auto restart after fault shutdown
Case ground pin
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
High power density: 155 W/in3
High efficiency – 93% at 12V full load
Improved Thermal Performance:
12A at 70ºC at 2m/s (400LFM)
Delivers up to 18A output current
Low output ripple and noise
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)
Cost efficient open frame design
Single optimal regulated output
2 : 1 input voltage range
Constant switching frequency
Positive Remote On/Off logic
Output over current/voltage protection
Overtemperature protection
Wide operating temperature range (-40°C to 85°C)
ISO* 9001 certified manufacturing facilities
Meets the voltage isolation requirements for
ETSI 300-132-2 and 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, 3rd Edition)
Licensed
CE mark meets 2006/95/EC directive§
Description
The QBW018A0B series of dc-dc converters are an expansion of a new generation of DC/DC power modules
designed to support 12Vdc intermediate bus applications where multiple low voltages are subsequently generated
using discrete/modular point of load (POL) converters. The QBW018A0B series provide up to 18A 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 93% at 12V full load. This leads to lower power dissipation such
that for many applications a heat sink is not required.
The QBW018A0B series power modules are isolated dc-dc converters that operate over an input voltage range from
36 to 75 Vdc and provide a single 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.
This product is affected by a Permanent Injunction entered by the United States District Court for the Eastern District of
Texas, Marshall Division in Civil Action No. 2:07-cv-00497-TJW-CE (copy enclosed). As set forth in that Order, certain acts
associated with this product are prohibited. This Product is Not for Sale in, Use in, or Importation into the United States.
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.
Document No: DS04-010 ver. 1.48
PDF name: QBW018A0B.pdf
‡ 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
Downloaded from Elcodis.com electronic components distributor
1 page  
Data Sheet
January 26, 2011
QBW018A0B Series Power Modules, DC - DC Converters:
36 – 75Vdc Input; 12Vdc Output; 18A Output Current
Characteristic Curves
The following figures provide typical characteristics for the QBW018A0B (12V, 18A) at 25ºC. The figures are identical
for either positive or negative Remote On/Off logic.
7
6
5
4 Io=18A
3
2
Io=9A
1 Io=0A
0
30 35 40 45 50 55 60 65 70
INPUT VOLTAGE, VO (V)
Figure 1. Typical Input Characteristic at Room
Temperature
75
TIME, t (500 s/div)
Figure 4. Typical Start-Up Using Remote On/Off,
negative logic version shown.
95
90
85
Vin=36V
Vin=48V
Vin=75V
80
75
70
0
5 10 15
OUTPUT CURRENT, IO (A)
Figure 2. Typical Converter Efficiency Vs. Output
current at Room Temperature
20
TIME, t (200 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.
36 Vin
48 Vin
75 Vin
TIME, t (1s/div)
Figure 3. Typical Output Ripple and Noise at Room
Temperature and Io = Io,max
TIME, t (200 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
Downloaded from Elcodis.com electronic components distributor
5
5 Page 
Data Sheet
January 26, 2011
QBW018A0B Series Power Modules, DC - DC Converters:
36 – 75Vdc Input; 12Vdc Output; 18A Output Current
20
15
3m/s (600LFM)
10
2m/s (400LFM)
5 1m/s (200LFM)
0
0 20 40 60 80 100
LOCAL AMBIENT TEMPERATURE, TA (C)
Figure 16. Output Current Derating for the
QBW018A0B (Vo = 12V) in the Transverse Orientation
with baseplate and 0.25-inch high heatsink; Airflow
Direction from Vin(–) to Vout(–); Vin = 48V
20
15
3m/s (600LFM)
10
2m/s (400LFM)
1m/s (200LFM)
5
0
0 20 40 60 80 100
LOCAL AMBIENT TEMPERATURE, TA (C)
Figure 17. Output Current Derating for the
QBW018A0B (Vo = 12V) in the Transverse Orientation
with baseplate and 0.5-inch high heatsink; Airflow
Direction from Vin(–) to Vout(–); Vin = 48V
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.
Layout Considerations
The QBW018 power module series are low profile in
order to be used in fine pitch system card
architectures. As such, component clearance
between the bottom of the power module and the
mounting board is limited. Avoid placing copper areas
on the outer layer directly underneath the power
module. Also avoid placing via interconnects
underneath the power module.
For additional layout guide-lines, refer to the
FLTR100V10 data sheet.
Post solder Cleaning and Drying
Considerations
Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate cleaning and drying can affect
both the reliability of a power module and the
testability of the finished circuit-board assembly. For
guidance on appropriate soldering, cleaning and
drying procedures, refer to Lineage Power Board
Mounted Power Modules: Soldering and Cleaning
Application Note.
Through-Hole Lead-Free Soldering
Information
The RoHS-compliant through-hole products use the
SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant
components. They are designed to be processed
through single or dual wave soldering machines. The
pins have an RoHS-compliant finish that is compatible
with both Pb and Pb-free wave soldering processes.
A maximum preheat rate of 3C/s is suggested. The
wave preheat process should be such that the
temperature of the power module board is kept below
210C. For Pb solder, the recommended pot
temperature is 260C, while the Pb-free solder pot is
270C max. Not all RoHS-compliant through-hole
products can be processed with paste-through-hole
Pb or Pb-free reflow process. If additional information
is needed, please consult with your Lineage Power
Power System representative for more details.
LINEAGE POWER
11
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