UWR Series
www.murata-ps.com
Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters
FEATURES
Low Cost! Highly reliable!
Proven SMT-on-pcb construction
PRODUCT OVERVIEW
Designed to meet UL/EN/IEC 60950-1,
CAN/CSA-C22.2 60950-1
Qual tested; HALT tested; EMC tested
Placing reliability and cost considerations above
all others, Murata Power Solutions' new A-Series DC/
DC Converters combine straightforward circuit topologies, the newest components, proven SMT-on-pcb
construction, and highly repeatable automatic assembly techniques. Considering the critical low-cost and
long-term-reliability requirements of today’s telecom,
datacom and computer/networking applications, the
A-Series may well be the most cost-effective DC/DC’s
available today.
The single-output, 6-10 Watt Models of the
A-Series deliver both high power densities and
impressive MTBF’s. Their superior durability is
substantiated by a rigorous in-house qualification program including HALT (Highly Accelerated Life Testing).
The goal of HALT is not to simulate field conditions but
to expose devices to multiple excessive stresses with
Small packages, 2" x 1" x 0.375"
Standard pinouts
5, 5.2, 12 or 15 Volt outputs
Choice of 3 wide-range inputs:
4.7-7.25 Volts
9-18 Volts
18-75 Volts
Fully isolated, 1500Vdc guaranteed
–40 to +100°C operation
5-side metal shielded cases with nonconductive baseplates
Modifications and customs for OEMs
the intention of precipitating any potential electrical,
mechanical or process weaknesses.
Packaged in 2" x 1" x 0.375" shielded metal
cases with non-conductive coatings, these fully
isolated (1500Vdc guaranteed) DC/DC’s offer excellent
line/load regulation, full I/O protection, and industrystandard pinouts.
Output voltages include 5, 5.2, 12 and 15 Volts.
Input voltage ranges are either 4.7-7.25V ("D5A"
models), 9-18V ("D12A" models) or 18-75V ("D48A"
models). All A-Series UWR models are fully EMI characterized and agency safety approved.
A-Series DC/DC’s are extremely reliable, easyto-use, cost-effective power converters. Use them
to improve the reliability of existing equipment or to
develop new systems that exceed design objectives.
+VOUT
(3)
+VIN
(1)
COMMON
(5)
Typical topology is shown
–VIN
(2)
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
Figure 1. Simplified Schematic
For full details go to
www.murata-ps.com/rohs
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MDC_UWR6-10W Series.E01 Page 1 of 6
UWR Series
Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters
Performance Specifications and Ordering Guide ➀
Output
Root Model ➅
UWR-5/1600-D5A-C
UWR-5/2000-D24E-C ➄
UWR-5.2/1500-D5A-C
UWR-12/665-D5A-C
UWR-12/830-D12A-C
UWR-5/1800-D48A-C
UWR-5/2000-D12A-C
UWR-5/2000-D48E-C ➄
UWR-12/750-D48A-C
UWR-15/530-D5A-C
UWR-15/600-D48A-C
UWR-15/665-D12A-C
Input
VOUT *
(Volts)
IOUT
(mA)
5
5
5.2
12
12
5
5
5
12
15
15
15
1600
2000
1500
665
830
1800
2000
2000
750
530
600
665
R/N (mVp-p) ➁
Typ.
Max.
50
50
50
75
75
75
50
50
75
50
75
75
Regulation (Max.)
Line
Load ➂
100
75
100
100
100
100
75
75
100
100
100
100
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.1%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
Range
(Volts)
IIN ➃
(mA)
5
24
5
5
12
48
12
48
48
5
48
12
4.7-7.25
18-36
4.7-7.25
4.7-7.25
9-18
18-75
9-18
36-72
18-75
4.7-7.25
18-75
9-18
20/2105
10/490
20/2053
25/2046
35/988
10/193
15/1029
10/248
10/230
40/2065
10/233
35/978
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.25%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
Package
(Case,
Pinout)
Efficiency
Min.
Typ.
VIN Nom.
(Volts)
74%
83%
74%
75%
81%
81%
79.5%
82%
81.5%
75%
81.5%
82%
76%
85%
76%
78%
84%
83%
81%
84%
82.5%
77%
84%
85%
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
➀
➁
➂
➃
Typical at TA = +25°C under nominal line voltage and full-load conditions unless otherwise noted.
Ripple/Noise (R/N) measured over a 20MHz bandwidth.
10% to 100% load.
Nominal line voltage, no-load/full-load conditions.
➄ See Technical Notes for an explanation of trading off input voltage ranges for higher full-power operating temperature.
➅ Please see the Part Number Structure for complete ordering options.
PART NUMBER STR UCTURE
MECHANICAL SPECIFICATIONS
U WR - 5 / 1800 - D48 A - C
RoHS-6 hazardous
substance
compliant
Output Configuration:
U = Unipolar
A-Series
High Reliability
Wide Range Input
2.00
(50.8)
METAL CASE
Case C2
0.375
(9.5)
INSULATED BASE
Input Voltage Range:
D5 = 4.7-7.25 Volts (5V nominal)
D12 = 9-18 Volts (12V nominal)
D24 = 18-36 Volts (24V nominal)
D48 = 18-75/36-72 Volts (48V nominal)
Nominal Output Voltage:
5, 5.2, 12 or 15 Volts
Maximum Output
Current
in mA
Note: Some model number combinations may not be available. Contact Murata
Power Solutions for further information.
0.040 ±0.002 DIA.
(1.016 ±0.051)
0.20 MIN
(5.1)
0.800
(20.3)
0.60
(15.24)
3
1
1.00
(25.4)
D, E
8
B
0.200
(5.08)
C
BOTTOM VIEW
A
Output Power (Watts)
I/O Connections
E
Pin
1
2
3
4
5
6
UWR-5/1600-D5A
UWR-5/1800-D48A
UWR-5/2000-D12A
UWR-5/2000-D24E
UWR-5/2000-D48E
UWR-5.2/1500-D5A
UWR-12/665-D5A
UWR-12/750-D48A
UWR-12/830-D12A
UWR-15/530-D5A
UWR-15/600-D48A
UWR-15/665-D12A
4
3
2
1
B
D
C
A
A
B
B
E
C
B
E
C
0
40
45
50
55
Function P11
+Vin
–Vin
+Vout
No Pin
Common
Notes:
Dimensions are in inches (mm) shown for ref. only.
Third Angle Projection
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only.
For "D5A, D12A and D24E" models,
the case is connected to
pin 2 (–VIN).
0
–40
0.10
(2.54)
D
7
5
0.400
(10.16)
5
A, C
9
0.800
(20.32)
2
TEMPERATURE DERATING
10
0.100
(2.54)
4
60
65
70
75
80
85
90
95
100
For "D48A and D48E" models, the case
is connected to pin 1 (+VIN).
Ambient Temperature (°C)
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MDC_UWR6-10W Series.E01 Page 2 of 6
UWR Series
Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀
Input
Absolute Maximum Ratings
Input Voltage Range:
D5A Models
D12A Models
D24E Models
D48A Models
D48E Models
4.7-7.25 Volts (5V nominal)
9-18 Volts (12V nominal)
18-36Volts (24V nominal
18-75 Volts (48V nominal)
36-72 Volts (48V nominal)
Input Voltage:
D5A Models
D12A Models
D24E Models
D48A and D48E Models
Input Current
See Ordering Guide
Input Reverse-Polarity Protection
Input Filter Type ➁
Pi
Overvoltage Shutdown:
D5A Models
D12A Models
D24E Models
D48A and D48E Models
None
20 Volts
40 Volts
76 Volts
Reverse-Polarity Protection
Yes (Instantaneous, 6A maximum)
Output
VOUT Accuracy (50% load)
±1%, maximum
Temperature Coefficient
±0.02% per °C
Ripple/Noise (20MHz BW) ➁
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage ➂
1500Vdc, guaranteed
Isolation Capacitance
250pF
Current Limiting
Auto-recovery
Overvoltage Protection ➃
Zener/transorb clamp, magnetic feedback
Dynamic Characteristics
Current must be <6A. Brief
duration only. Fusing recommended.
6.8 Volts, limited duration
15 Volts, limited duration
18 Volts, limited duration
Output Current
Current limited. Max. current and
short-circuit duration model
dependent.
Storage Temperature
–40 to +105°C
These are stress ratings. Exposure of devices to greater than any of these conditions
may adversely affect long-term reliability. Proper operation under conditions other than
those listed in the Performance/Functional Specifications Table is not implied.
TECHNICAL NOTES
Floating Outputs
Transient Response (50% load step)
200µsec max. to ±1.5% of final value
Switching Frequency
165kHz (±15kHz)
Flammability
UL94V-0
Environmental
Operating Temperature (Ambient):
Without Derating
With Derating
–40 to +60/65/70°C (Model dependent)
to +100°C (See Derating Curves)
Storage Temperature
–40 to +105°C
Physical
Dimensions
2" x 1" x 0.375" (51 x 25 x 9.5mm)
Shielding
5-sided
Case Connection:
D5A, D12A and D24E Models
D48A and D48E Models
Pin 2 (–VIN)
Pin 1 (+VIN)
Case Material
Output Overvoltage Protection
5/5.2V Outputs
12V Outputs
15V Outputs
10 Volts
22 Volts
44 Volts
80 Volts
Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel finish and plastic baseplate
Pin Material
Gold plate over copper alloy
Weight
1.3 ounces (37 grams)
➀ These power converters require a minimum 10% loading to maintain specified regulation.
Operation under no-load conditions will not damage these devices; however they may
not meet all listed specifications.
➁ Application-specific input/output filtering can be recommended and perhaps added
internally upon request for scheduled, quantity orders. Contact Murata Power Solutions
Applications Engineering for details.
➂ Devices can be screened or modified for higher guaranteed isolation voltages.
Contact Murata Power Solutions Applications Engineering for details.
➃ Except for 3.3V devices which have no protection.
Since these are isolated DC/DC converters, their outputs are "floating."
Designers will usually use the output Common (pin 5) as the ground/return
of the load circuit. You can, however, use the +Output (pin 3) as ground/
return to effectively reverse the output polarity.
Filtering and Noise Reduction
All A-Series UWR 6-10 Watt DC/DC Converters achieve their rated ripple
and noise specifications without the use of external input/output capacitors. In critical applications, input/output ripple and noise may be further
reduced by installing electrolytic capacitors across the input terminals and/
or low-ESR tantalum or electrolytic capacitors across the output terminals.
The caps should be located as close to the power converters as possible.
Typical values are listed in the tables below. In many applications, using
values greater than those listed will yield better results.
To Reduce Input Ripple
D5A Models
D12A and D24E Models
D48A and D48E Models
To Reduce Output Ripple
5/5.2V Outputs
12/15V Outputs
47µF, 10V
20µF, 50V
10µF, 100V
47µF, 10V, Low ESR
22µF, 20V, Low ESR
In critical, space-sensitive applications, Murata Power Solutions may be
able to tailor the internal input/output filtering of these units to meet your
specific requirements.
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MDC_UWR6-10W Series.E01 Page 3 of 6
UWR Series
Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters
Typical Performance Curves (TA = +25°C)
The performance curves below were derived from actual test data for a single model number (UWR-5/1800-D48A).
Since all devices in the 6-10W UWR A-Series have the same circuit topology, the performance curves are representative of all devices.
LOAD REGULATION
LINE REGULATION
Output Voltage vs. Input Voltage and Output Current
Output Voltage vs. Output Current and Input Voltage
5.016
5.016
5.014
5.014
VIN = 18V
5.012
IOUT = 0.18A
VOUT (Volts)
VOUT (Volts)
5.012
5.010
5.008
IOUT = 0.9A
5.010
5.008
5.006
5.006
5.004
5.004
VIN = 72V
IOUT = 1.8A
VIN = 48V
5.002
5.002
5.000
18
24
30
36
42
48
54
60
66
72
VIN (Volts)
5.000
0.18
0.3
0.6
0.9
1.2
1.5
1.8
Output Current (Amps)
EFFICIENCY
Efficiency vs. Output Current and Input Voltage
84
81
Efficiency (%)
78
75
VIN = 18V
72
VIN = 48V
69
VIN = 72V
66
63
60
0.18
0.3
0.6
0.9
1.2
1.5
1.8
Output Current (Amps)
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MDC_UWR6-10W Series.E01 Page 4 of 6
UWR Series
Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters
Input Fusing
CUSTOM CAPABILITIES
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For Murata Power
Solutions A-Series UWR 6-10 Watt DC/DC Converters, you should use slowblow type fuses with values no greater than the following:
VIN Range
D5A
D12A and D24E
D48A and D48E
Fuse Value
3A
2A
1A
Our experienced applications and design staffs; quick-turn prototype
capability; highly automated, SMT assembly facilities; and in-line SPC
quality-control techniques combine to give us the unique ability to design
and deliver any quantity of power converters to the highest standards of
quality and reliability.
EMI RADIATED EMISSIONS
If you’re designing with EMC in mind, please note that all of Murata Power
Solutions' A-Series UWR 6-10 Watt DC/DC Converters have been characterized for radiated and conducted emissions in our new EMI/EMC laboratory. Testing is conducted in an EMCO 5305 GTEM test cell utilizing EMCO
automated EMC test software. Radiated emissions are tested to the limits
of FCC Part 15, Class B and CISPR 22 (EN 55022), Class B. Radiated emissions plots to FCC and CISPR 22 for model UWR-12/665-D5A appear below.
UWR-12/665-D5A Radiated Emissions
FCC Part 15 Class B, 3 Meters
Converter Output = 12Vdc @ 620mA
We have compiled a large library of DC/DC designs that are currently used
in a variety of telecom, medical, computer, railway, aerospace and industrial applications. We may already have the converter you need.
Contact us. Our goal is to provide you the highest-quality, most costeffective power converters available.
Quality and Reliability
The A-Series are the first DC/DC Converters to emerge from Murata Power
Solutions' new, company-wide approach to designing and manufacturing
the most reliable power converters available. The five-pronged program
draws our Quality Assurance function into all aspects of new-product
design, development, characterization, qualification and manufacturing.
Design for Reliability
80
Design for Reliability is woven throughout our multi-phased, new-productdevelopment process. Design-for-reliability practices are fully documented
and begin early in the new-product development cycle with the following
goals:
1. To work from an approved components/vendors list ensuring the use of
reliable components and the rigorous qualification of new components.
2. To design with safety margins by adhering to a strict set of derating
guidelines and performing theoretical worst-case analyses.
3. To locate potential design weaknesses early in the product-development
cycle by using extensive HALT (Highly Accelerated Life Testing).
4. To prove that early design improvements are effective by employing a
thorough FRACA (Failure Reporting Analysis and Corrective Action) System.
70
60
Radiated Emissions (dBµV/M)
Murata Power Solutions' world-class design, development and manufacturing team stands ready to work with you to deliver the exact power
converter you need for your demanding, large volume, OEM applications.
And ... we’ll do it on time and within budget!
FCC Class B Limit
50
40
30
20
10
0
Radiated Emissions
–10
–20
1000
100
Frequency (MHz)
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these
converters. These specifications vary depending on the solder type. Exceeding these
specifications may cause damage to the product. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your
production environment may differ; therefore please thoroughly review these guidelines
with your process engineers.
UWR-12/665-D5A Radiated Emissions
EN 55022 Class B, 10 Meters
Converter Output = 12Vdc @ 620mA
80
70
Radiated Emissions (dBµV/M)
60
Wave Solder Operations for through-hole mounted products (THMT)
50
EN 55022 Class B Limit
40
For Sn/Ag/Cu based solders:
30
20
10
0
Maximum Preheat Temperature
115° C.
Maximum Pot Temperature
270° C.
Maximum Solder Dwell Time
7 seconds
For Sn/Pb based solders:
Radiated Emissions
–10
Maximum Preheat Temperature
105° C.
–20
Maximum Pot Temperature
250° C.
Maximum Solder Dwell Time
6 seconds
1000
100
Frequency (MHz)
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MDC_UWR6-10W Series.E01 Page 5 of 6
UWR Series
Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters
HALT Testing
Qualification
The goal of the accelerated-stress techniques used by Murata Power
Solutions is to force device maturity, in a short period of time, by exposing
devices to excessive levels of "every stimulus of potential value." We use
HALT (Highly Accelerated Life Testing) repeatedly during the design and
early manufacturing phases to detect potential electrical and mechanical
design weaknesses that could result in possible future field failures.
For each new product, electrical performance is verified via a comprehensive characterization process and long-term reliability is confirmed via a
rigorous qualification procedure. The qual procedure includes such strenuous tests as thermal shock and 500 hour life. Qual testing is summarized
below.
Qualification Testing
During HALT, prototype and pre-production DC/DC converters are subjected to progressively higher stress levels induced by thermal cycling,
rate of temperature change, vibration, power cycling, product-specific
stresses (such as dc voltage variation) and combined environments. The
stresses are not meant to simulate field environments but to expose any
weaknesses in a product’s electro/mechanical design and/or assembly
processes. The goal of HALT is to make products fail so that device weaknesses can be analyzed and strengthened as appropriate. Applied stresses
are continually stepped up until products eventually fail. After corrective
actions and/or design changes, stresses are stepped up again and the cycle
is repeated until the "fundamental limit of the technology" is determined.
Murata Power Solutions has invested in a Qualmark OVS-1 HALT tester
capable of applying voltage and temperature extremes as well as 6-axis,
linear and rotational, random vibration. A typical HALT profile (shown above)
consists of thermal cycling (–55 to +125°C, 30°C/minute) and simultaneous, gradually increasing, random longitudinal and rotational vibration up
to 20G’s with load cycling and applied-voltage extremes added as desired.
Many devices in Murata Power Solutions' new A-Series could not be made
to fail prior to reaching either the limits of the HALT chamber or some previously known physical limit of the device.
We also use the HALT chamber and its ability to rapidly cool devices to
verify their "cold-start" capabilities.
100
40
80
20
40
20
0
0
Random Vibration (G's)
Temperature (°C)
60
Qualification Test
Method/Comments
HALT
Murata Power Solutions in-house procedure
High Temperature Storage
Max. rated temp., 1,000 hours
Thermal Shock
10 cycles, –55 to +125°C
Temperature/Humidity
+85°C, 85% humidity, 48 hours
Lead Integrity
Murata Power Solutions in-house procedure
Life Test
+70°C, 500 hours*
Marking Permanency
Murata Power Solutions in-house procedure
End Point Electrical Tests
Per product specification
* Interim electrical test at 200 hours.
In-Line Process Controls and Screening
A combination of statistical sampling and 100% inspection techniques
keeps our assembly line under constant control. Parameters such as
solder-paste thickness, component placement, cleanliness, etc. are statistically sampled, charted and fine tuned as necessary. Visual inspections are
performed by trained operators after pick-and-place, soldering and cleaning
operations. Units are 100% electrically tested prior to potting. All devices
are temperature cycled, burned-in, hi-pot tested and final-electrical tested
prior to external visual examination, packing and shipping.
Rapid Response to Problems
Murata Power Solutions employs an outstanding corrective-action system
to immediately address any detected shortcomings in either products or
processes. Whenever our assembly, quality or engineering personnel spot
a product/process problem, or if a product is returned with a potential
defect, we immediately perform a detailed failure analysis and, if necessary,
undertake corrective actions. Over time, this system has helped refine our
assembly operation to yield one of the lowest product defect rates in the
industry.
–20
–40
10
20
30
40
50
60
70
80
90
Test Time (minutes)
Typical HALT Profile
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2015 Murata Power Solutions, Inc.
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MDC_UWR6-10W Series.E01 Page 6 of 6