www.murata-ps.com
UWR Series
Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters
FEATURES
Cost! Highly reliable!
Low
Proven SMT-on-pcb construction
Designed to meet UL/EN/IEC 60950-1,
CAN/CSA-C22.2 60950-1
tested; HALT tested; EMC tested
Qual
Small packages, 2" x 1" x 0.375"
Standard pinouts
5.2, 12 or 15 Volt outputs
5,
Choice of 3 wide-range inputs:
4.7-7.25 Volts
9-18 Volts
18-75 Volts
isolated, 1500Vdc guaranteed
Fully
to +100°C operation
–40
5-side metal shielded cases with non-
conductive baseplates
cations and customs for OEMs
Modifi
PRODUCT OVERVIEW
Placing reliability and cost considerations above
all others, Murata Power Solutions' new A-Series DC/
DC Converters combine straightforward circuit topolo-
gies, the newest components, proven SMT-on-pcb
construction, and highly repeatable automatic assem-
bly 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 pro-
gram 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
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 industry-
standard 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 char-
acterized and agency safety approved.
A-Series DC/DC’s are extremely reliable, easy-
to-use, cost-effective power converters. Use them
to improve the reliability of existing equipment or to
develop new systems that exceed design objectives.
+V
IN
(1)
+V
OUT
(3)
COMMON
(5)
Typical topology is shown
–V
IN
(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
I
OUT
(mA)
1600
2000
1500
665
830
1800
2000
2000
750
530
600
665
V
OUT
*
(Volts)
5
5
5.2
12
12
5
5
5
12
15
15
15
R/N (mVp-p)
➁
Typ.
Max.
50
50
50
75
75
75
50
50
75
50
75
75
100
75
100
100
100
100
75
75
100
100
100
100
Regulation (Max.)
Line
Load
➂
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.1%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.25%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
V
IN
Nom.
(Volts)
5
24
5
5
12
48
12
48
48
5
48
12
Range
(Volts)
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
I
IN
➃
(mA)
20/2105
10/490
20/2053
25/2046
35/988
10/193
15/1029
10/248
10/230
40/2065
10/233
35/978
Efficiency
Min.
Typ.
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%
Package
(Case,
Pinout)
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
C2, P11
Typical at T
A
= +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
➀
➁
➂
➃
U WR
-
5
/
1800
-
D48 A
-
C
Output Configuration:
U
= Unipolar
Wide Range Input
Nominal Output Voltage:
5, 5.2, 12 or 15 Volts
RoHS-6 hazardous
substance
compliant
2.00
(50.8)
METAL CASE
0.375
(9.5)
A-Series
High Reliability
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)
Case C2
INSULATED BASE
0.20 MIN
(5.1)
0.800
(20.3)
0.040 ±0.002 DIA.
(1.016 ±0.051)
0.60
(15.24)
Maximum Output
Current
in mA
Note:
Some model number combinations may not be available. Contact Murata
Power Solutions for further information.
TEMPERATURE DERATING
10
9
8
A, C
D, E
B
C
A
D
3
1
1.00
(25.4)
0.100
(2.54)
0.800
(20.32)
0.400
(10.16)
4
2
5
0.200
(5.08)
BOTTOM VIEW
0.10
(2.54)
I/O Connections
Output Power (Watts)
7
6
5
4
3
2
1
0
–40
0
40
45
50
55
60
65
70
75
80
85
90
95
100
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
B
D
C
A
A
B
B
E
C
B
E
C
E
Dimensions are in inches (mm) shown for ref. only.
Third Angle Projection
Pin
1
2
3
4
5
Function P11
+Vin
–Vin
+Vout
No Pin
Common
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only.
Notes:
For "D5A, D12A and D24E" models,
the case is connected to
pin 2 (–V
IN
).
For "D48A and D48E" models, the case
is connected to pin 1 (+V
IN
).
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 @ T
A
= +25°C under nominal line voltage and full-load conditions, unless noted.
➀
Input
Input Voltage Range:
D5A Models
D12A Models
D24E Models
D48A Models
D48E Models
Input Current
Input Filter Type
➁
Overvoltage Shutdown:
D5A Models
D12A Models
D24E Models
D48A and D48E Models
Reverse-Polarity Protection
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)
See Ordering Guide
Pi
None
20 Volts
40 Volts
76 Volts
Yes (Instantaneous, 6A maximum)
±1%, maximum
±0.02% per °C
See Ordering Guide
See Ordering Guide
See Ordering Guide
1500Vdc, guaranteed
250pF
Auto-recovery
Zener/transorb clamp, magnetic feedback
Absolute Maximum Ratings
Input Voltage:
D5A Models
D12A Models
D24E Models
D48A and D48E Models
Input Reverse-Polarity Protection
Output Overvoltage Protection
5/5.2V Outputs
12V Outputs
15V Outputs
Output Current
10 Volts
22 Volts
44 Volts
80 Volts
Current must be <6A. Brief
duration only. Fusing recommended.
6.8 Volts, limited duration
15 Volts, limited duration
18 Volts, limited duration
Current limited.
Max. current and
short-circuit duration model
dependent.
–40 to +105°C
Output
V
OUT
Accuracy
(50% load)
Temperature Coefficient
Ripple/Noise
(20MHz BW)
➁
Line/Load Regulation
Efficiency
Isolation Voltage
➂
Isolation Capacitance
Current Limiting
Overvoltage Protection
➃
Storage Temperature
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
Dynamic Characteristics
Transient Response
(50% load step)
Switching Frequency
Flammability
200µsec max. to ±1.5% of final value
165kHz (±15kHz)
UL94V-0
Floating Outputs
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 capaci-
tors. 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
Environmental
Operating Temperature
(Ambient):
Without Derating
With Derating
Storage Temperature
–40 to +60/65/70°C (Model dependent)
to +100°C (See Derating Curves)
–40 to +105°C
2" x 1" x 0.375" (51 x 25 x 9.5mm)
5-sided
Pin 2 (–V
IN
)
Pin 1 (+V
IN
)
Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel finish and plastic baseplate
Gold plate over copper alloy
1.3 ounces (37 grams)
Physical
Dimensions
Shielding
Case Connection:
D5A, D12A and D24E Models
D48A and D48E Models
Case Material
Pin Material
Weight
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.
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
(T
A
= +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.
LINE REGULATION
LOAD REGULATION
Output Voltage vs. Input Voltage and Output Current
5.016
5.014
5.012
V
OUT
(Volts)
5.010
5.008
I
OUT
= 0.9A
5.006
5.004
I
OUT
= 1.8A
5.002
5.000
18
24
30
36
42
48
54
60
66
72
V
IN
(Volts)
5.002
5.000
0.18
V
OUT
(Volts)
I
OUT
= 0.18A
5.016
Output Voltage vs. Output Current and Input Voltage
V
IN
= 18V
5.014
5.012
5.010
5.008
5.006
V
IN
= 72V
5.004
V
IN
= 48V
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
78
Efficiency (%)
75
V
IN
= 18V
72
V
IN
= 48V
69
V
IN
= 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
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 slow-
blow type fuses with values no greater than the following:
V
IN
Range
D5A
D12A and D24E
D48A and D48E
Fuse Value
3A
2A
1A
CUSTOM CAPABILITIES
Murata Power Solutions' world-class design, development and manu-
facturing 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!
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.
We have compiled a large library of DC/DC designs that are currently used
in a variety of telecom, medical, computer, railway, aerospace and indus-
trial applications. We may already have the converter you need.
Contact us. Our goal is to provide you the highest-quality, most cost-
effective power converters available.
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 character-
ized for radiated and conducted emissions in our new EMI/EMC labora-
tory. 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 emis-
sions plots to FCC and CISPR 22 for model UWR-12/665-D5A appear below.
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
Design for Reliability is woven throughout our multi-phased, new-product-
development 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.
UWR-12/665-D5A Radiated Emissions
FCC Part 15 Class B,
3
Meters
Converter Output = 12Vdc @ 620mA
80
70
60
Radiated Emissions (dBµV/M)
FCC Class B Limit
50
40
30
20
10
0
Radiated Emissions
–10
–20
100
1000
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 atmo-
spheric 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.
Wave Solder Operations for through-hole mounted prod-
ucts (THMT)
For Sn/Ag/Cu based solders:
Maximum Preheat Temperature
115° C.
270° C.
7 seconds
UWR-12/665-D5A Radiated Emissions
EN 55022 Class B, 10 Meters
Converter Output = 12Vdc @ 620mA
80
70
60
Radiated Emissions (dBµV/M)
50
EN 55022 Class B Limit
40
30
20
10
0
Radiated Emissions
Maximum Pot Temperature
Maximum Solder Dwell Time
For Sn/Pb based solders:
Maximum Preheat Temperature
100
1000
–10
–20
105° C.
250° C.
6 seconds
Maximum Pot Temperature
Maximum Solder Dwell Time
Frequency (MHz)
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MDC_UWR6-10W Series.E01
Page 5 of 6
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