Single Output
A-Series, UWR Models
Features
High-Reliability, 2" x 1"
6-10 Watt, DC/DC Converters
Figure 1. Simplifi ed Schematic
Placing reliability and cost considerations above all others, DATEL's 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 qualifi cation program including HALT (Highly Accelerated Life
Testing). The goal of HALT is not to simulate fi eld 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 regula-
tion, full I/O protection, thermal shutdown, 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 characterized and UL1950, CSA950 and
IEC950 safety approved.
A-Series DC/DC's are extremely reliable, easy-to-use, cost-effective power con-
verters. Use them to improve the reliability of existing equipment or to develop new
systems that exceed design objectives.
DATEL, Inc., Mansfi eld, MA 02048 (USA)
Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 Email: sales@datel.com Internet: www.datel.com
COMMON
+V
OUT
+V
IN
V
(1)
(2)
(3)
(5)
IN
REFERENCE &
ERROR AMP
OPTO
ISOLATION
PWM
CONTROLLER
Low Cost! Highly reliable!
Proven SMT-on-pcb construction
Designed to meet UL1950 and
EN60950
Qual tested; HALT tested; EMC tested
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 +100C operation
5-side metal shielded cases with
non-conductive baseplates
Modifi cations and customs for OEM's
INNOVATION and EX C ELL E N C E
A - S E R I E S
A Series
6 - 1 0 W , S I N G L E O U T P U T D C / D C C O N V E R T E R S
2
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
).
Pin
1
2
3
4
5
I/O Connections
Function P11
+Input
Input
+Output
No Pin
Common
Wide Range Input
Output Confi guration:
U = Unipolar
Nominal Output Voltage:
5, 5.2, 12 or 15 Volts
Maximum Output Current
in mA
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)
5
U WR
1800
-
/
D48 A
-
A-Series
High Reliability
O
u
tp
u
t
P
o
w
e
r (W
a
t
ts
)
Ambient Temperature (C)
10
9
8
7
6
5
4
3
2
1
0
UWR-5/1600-D5A B
UWR-5/1800-D48A D
UWR-5/2000-D12A C
UWR-5/2000-D24E A
UWR-5/2000-D48E A
UWR-5.2/1500-D5A B
UWR-12/665-D5A B
UWR-12/750-D48A E
UWR-12/830-D12A C
UWR-15/530-D5A B
UWR-15/600-D48A E
UWR-15/665-D12A C
D, E
B
A, C
D
C
E
A
40
0 40 45 50 55 60 65 70 75 80 85 90 95
100
Performance Specifi cations and Ordering Guide
Output
Input
Typical at T
A
= +25C 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.
See Technical Notes for an explanation of trading off input voltage ranges for higher full-power operating temperature.
UWR-5/1600-D5A 5 1600 50 100 0.2% 0.5% 5 4.7-7.25 20/2105 74% 76% C2, P11
UWR-5/1800-D48A 5 1800 75 100 0.2% 0.5% 48 18-75 10/240 78% 81% C2, P11
UWR-5/2000-D12A 5 2000 50 75 0.2% 0.5% 12 9-18 15/1029 79.5% 81% C2, P11
UWR-5/2000-D24E
5 2000 50 75 0.2% 0.5% 24 18-36 10/490 83% 85% C2, P11
UWR-5/2000-D48E
5 2000 50 75 0.2% 0.5% 48 36-72 10/248 82% 84% C2, P11
UWR-5.2/1500-D5A 5.2 1500 50 100 0.2% 0.5% 5 4.7-7.25 20/2053 74% 76% C2, P11
UWR-12/665-D5A 12 665 75 100 0.2% 0.5% 5 4.7-7.25 25/2046 75% 78% C2, P11
UWR-12/750-D48A 12 750 75 100 0.2% 0.5% 48 18-75 10/230 81.5% 82.5% C2, P11
UWR-12/830-D12A 12 830 75 100 0.2% 0.5% 12 9-18 35/988 81% 84% C2, P11
UWR-15/530-D5A 15 530 50 100 0.2% 0.5% 5 4.7-7.25 40/2065 75% 77% C2, P11
UWR-15/600-D48A 15 600 75 100 0.2% 0.5% 48 18-75 10/233 81.5% 84% C2, P11
UWR-15/665-D12A 15 665 75 100 0.2% 0.5% 12 9-18 35/978 82% 85% C2, P11
* Contact DATEL for availablility of 3.3V outputs.
P A R T N U M B E R S T R U C T U R E
M E C H A N I C A L S P E C I F I C A T I O N S
T E M P E R A T U R E D E R A T I N G
1
2
3
4
5
METAL CASE
INSULATED BASE
2.00
(50.80)
0.20 MIN
(5.08)
1.00
(25.40)
0.400
(10.16)
0.800
(20.32)
0.800
(20.32)
0.375
(9.53)
0.040 0.002 DIA.
(1.016 0.051)
BOTTOM VIEW
0.200
(5.08)
0.100
(2.54)
0.10
(2.54)
0.60
(15.24)
DIMENSIONS ARE IN INCHES (MM)
Case C2
R/N (mVp-p) Regulation
(Max.)
Effi ciency
Package
V
OUT
*
I
OUT
V
IN
Nom.
Range
I
IN
(Case,
Model
(Volts)
(mA)
Typ. Max.
Line Load
(Volts) (Volts) (mA) Min. Typ. Pinout)
UWR Models
6 - 1 0 W , S I N G L E O U T P U T D C / D C C O N V E R T E R S
3
Input Voltage:
D5A Models 10 Volts
D12A Models 22 Volts
D24E Models 44 Volts
D48A and D48E Models 80 Volts
Input Reverse-Polarity Protection Current must be <6A. Brief
duration only. Fusing recommended.
Output Overvoltage Protection
5/5.2V Outputs 6.8 Volts, limited duration
12V Outputs 15 Volts, limited duration
15V Outputs 18 Volts, limited duration
Output Current Current limited.
Max. current and
short-circuit duration model
dependent.
Storage Temperature 40 to +105C
Lead Temperature (soldering, 10 sec.) +300C
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specifi cations Table is not implied.
Absolute Maximum Ratings
T E C H N I C A L N O T E S
These power converters require a minimum 10% loading to maintain specifi ed regulation.
Operation under no-load conditions will not damage these devices; however they may not
meet all listed specifi cations.
Application-specifi c input/output fi ltering can be recommended and perhaps added
internally upon request. Contact DATEL Applications Engineering for details.
Devices can be screened or modifi ed for higher guaranteed isolation voltages.
Contact DATEL Applications Engineering for details.
Except for 3.3V devices which have no protection.
Performance/Functional Specifi cations
Typical @ T
A
= +25C under nominal line voltage and full-load conditions, unless noted.
Input
Input Voltage Range:
D5A Models 4.7-7.25 Volts (5V nominal)
D12A Models 9-18 Volts (12V nominal)
D24E Models 18-36Volts (24V nominal
D48A Models 18-75 Volts (48V nominal)
D48E Models 36-72 Volts (48V nominal)
Input Current See Ordering Guide
Input Filter Type
Pi
Overvoltage Shutdown:
D5A Models None
D12A Models 20 Volts
D24E Models 40 Volts
D48A and D48E Models 76 Volts
Reverse-Polarity Protection Yes (Instantaneous, 6A maximum)
Output
V
OUT
Accuracy (50% load) 1%, maximum
Temperature Coeffi cient 0.02% per C
Ripple/Noise (20MHz BW)
See Ordering Guide
Line/Load Regulation See Ordering Guide
Effi ciency See Ordering Guide
Isolation Voltage
1500Vdc, guaranteed
Isolation Capacitance 250pF
Current Limiting Auto-recovery
Overvoltage Protection
Zener/transorb clamp, magnetic feedback
Dynamic Characteristics
Transient Response (50% load step) 200sec max. to 1.5% of fi nal value
Switching Frequency 165kHz (15kHz)
Environmental
Operating Temperature (Ambient):
Without Derating 40 to +60/65/70C (Model dependent)
With Derating to +100C (See Derating Curves)
Storage Temperature 40 to +105C
Physical
Dimensions 2" x 1" x 0.375" (51 x 25 x 9.5mm)
Shielding 5-sided
Case Connection:
D5A, D12A and D24E Models Pin 2 (V
IN
)
D48A and D48E Models Pin 1 (+V
IN
)
Case Material Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel fi nish and plastic baseplate
Pin Material Brass, solder coated
Weight 1.3 ounces (37 grams)
Floating Outputs
Since these are isolated DC/DC converters, their outputs are "fl oating."
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 specifi cations 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
47F, 10V
D12A and D24E Models
20F, 50V
D48A and D48E Models
10F, 100V
To Reduce Output Ripple
5/5.2V Outputs
47F, 10V, Low ESR
12/15V Outputs
22F, 20V, Low ESR
In critical, space-sensitive applications, DATEL may be able to tailor the
internal input/output fi ltering of these units to meet your specifi c require-
ments. Contact our Applications Engineering Group for additional details.
A Series
6 - 1 0 W , S I N G L E O U T P U T D C / D C C O N V E R T E R S
4
Effi ciency vs. Output Current and Input Voltage
Output Voltage vs. Input Voltage and Output Current
Output Voltage vs. Output Current and Input Voltage
L I N E R E G U L A T I O N
L O A D R E G U L A T I O N
Typical Performance Curves (T
A
= +25C)
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.
84
81
78
75
72
69
66
63
60
Ef
f
i
ci
ency (
%
)
Output Current (Amps)
V
IN
= 72V
V
IN
= 48V
V
IN
= 18V
0.3 0.6 0.9 1.2 1.5 1.8
0.18
E F F I C I E N C Y
0.3 0.6 0.9 1.2 1.5 1.8
Output Current (Amps)
V
IN
= 72V
V
IN
= 48V
V
IN
= 18V
5.016
5.014
5.012
5.010
5.008
5.006
5.004
5.002
5.000
V
OUT
(V
o
l
ts
)
0.18
5.016
5.014
5.012
5.010
5.008
5.006
5.004
5.002
5.000
V
OUT
(V
o
l
ts
)
18
24
30
36
42
48
54
60
66
72
V
IN
(Volts)
I
OUT
= 1.8A
I
OUT
= 0.9A
I
OUT
= 0.18A
UWR Models
6 - 1 0 W , S I N G L E O U T P U T D C / D C C O N V E R T E R S
If you're designing with EMC in mind, please note that all of DATEL's
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. Correlation to other
specifi cations can be supplied upon request. Radiated emissions plots to
FCC and CISPR 22 for model UWR-12/665-D5A appear below. Published
EMC test reports are available for each model number. Contact DATEL's
Applications Engineering Department for more details.
5
80
70
60
50
40
30
20
10
0
10
20
Frequency (MHz)
100
1000
Radiated Emissions
FCC Class B Limit
UWR-12/665-D5A Radiated Emissions
FCC Part 15 Class B, 3 Meters
Converter Output = 12Vdc @ 620mA
R
a
d
i
ated
E
m
i
s
si
on
s (dB
V
/
M
)
UWR-12/665-D5A Radiated Emissions
EN 55022 Class B, 10 Meters
Converter Output = 12Vdc @ 620mA
80
70
60
50
40
30
20
10
0
10
20
Frequency (MHz)
100
1000
Radiated Emissions
EN 55022 Class B Limit
R
a
d
i
ated
E
m
i
s
si
on
s (dB
V
/
M
)
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For DATEL 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
Fuse Value
D5A 3A
D12A and D24E 2A
D48A and D48E 1A
DATEL's 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!
Our experienced applications and design staffs; quick-turn prototype capa-
bility; 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 industrial
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.
C U S T O M C A P A B I L I T I E S
E M I R A D I A T E D E M I S S I O N S
PDF 
ZIP