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PDF QBW018A0B Data sheet ( Hoja de datos )
| Número de pieza | QBW018A0B | |
| Descripción | Power Modules | |
| Fabricantes | Tyco | |
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Data Sheet
April 21, 2006
QBW018A0B Series Power Modules, DC - DC Converters:
36 – 75Vdc Input; 12Vdc Output; 18A Output Current
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
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)
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
UL* 60950-1 Recognised, CSA† C22.2 No. 60950-
3-01 Certified, and EN 60950-1 (VDE‡ 0805): 2001-
12 Licensed (pending)
CE mark meets 73/23/EEC and 93/68/EEC
directives§ (pending)
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.
* 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.
** ISO is a registered trademark of the International Organization of Standards
Document No: DS04-010 ver. 1.4
PDF name: qbus_qbw018a0b_ds.pdf
1 page  
Data Sheet
April 21, 2006
QBW018A0B Series Power Modules, DC - DC Converters:
36 – 75Vdc Input; 12Vdc Output; 18A Output Current
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
Remote On/Off Signal Interface
(VIN=VIN, min to VIN, max ; open collector or equivalent,
Signal referenced to VIN- terminal)
Negative Logic: device code suffix “1”
Logic Low = module On, Logic High = module Off
Positive Logic: No device code suffix required
Logic Low = module Off, Logic High = module On
Logic Low Specification
Remote On/Off Current – Logic Low
On/Off Voltage:
Logic Low
Logic High – (Typ = Open Collector)
Logic High maximum allowable leakage current
Turn-On Delay and Rise Times
(IO=IO, max , VIN = VIN, nom, TA = 25 oC, )
Tdelay = Time until VO = 10% of VO,set from either
application of Vin with Remote On/Off set to On or
operation of Remote On/Off from Off to On with Vin
already applied for at least one second.
Device Symbol Min
Typ
Max Unit
All
Ion/off
⎯
⎯
All
Von/off
0.0
⎯
All
Von/off
⎯
__
All
Ion/off
⎯
⎯
All Tdelay with
Vin
All Tdelay with
On/Off
16
1
1.2 mA
1.2 V
5V
50 μA
msec
msec
Output Voltage Rise time (time for Vo to rise from 10%
of Vo,set to 90% of Vo, set)
Turn-On Output Voltage Overshoot (above Vo, set)
Output Overvoltage Protection (Clamp)
Overtemperature Protection
(See Thermal Consideration section)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
All
All
All
All
All
All
Trise
―
1
200
13 ⎯
Tref ⎯ 125
⎯ 35
32 34
msec
mV
15 V
⎯ °C
36 V
⎯V
Tyco Electronics Power Systems
5
5 Page 
Data Sheet
April 21, 2006
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
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.
Tyco Electronics Power Systems
11
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