Single Output
A-Series, UWR Models
Features
High-Density, 2" x 1"
1-6 Amp, 7-15 Watt DC/DC's
Figure 1. Simplifi ed Schematic
The new 1.2, 1.5V, 1.8V and 2.5V models in DATEL’s fl agship 7-15 Watt A-Series
can source a continuous 6 Amps. This is the most "low-voltage" current available
from a standard 1" x 2" package, and these power converters exemplify DATEL’s
relentless drive to bring you more power/current, from standard packages, without
compromising reliability or resorting to thermal specmanship.
By combining a high-frequency (310kHz), high-effi ciency (to 88%), synchronous-
rectifi er topology with the newest components and time-tested, fully automated,
SMT-on-pcb construction, these UWR Models are able to bring you 7-15W (@ up
to 6A) in the standard 2" x 1" package from which most competitors can only get
5-10W (@ 3-4A). All UWR’s deliver their full output power over ambient temperature
ranges from –40°C to as high as +70°C (model and input voltage dependent) without
heat sinks or supplemental forced-air cooling. Devices derate to +100°C.
Output voltages are 1,2, 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 Volts. Input voltage ranges
are 10-18V ("D12" models), 18-36V ("D24" models) or 36-75V ("D48") models. All
models feature input pi fi lters, input undervoltage and overvoltage lockout, input
reverse-polarity protection, output overvoltage protection, output current limiting,
and continuous short-circuit protection. On/off control and output-trim functions are
optional (see Optional Functions). All models are certifi ed to IEC950, UL1950 and
EN60950 safety requirements. "D48" models (36-75V inputs) are CE marked.
UWR 7-15W DC/DC’s are packaged in low-cost, light-weight, diallyl phthalate
(UL94V-0 rated) plastic packages with standoffs. EMC compliance is achieved via a
low-noise design rather than through expensive metal shielding.
A- SERIES
INNOVATION and EX C ELL E N C
E
®
®
COMMON
(6)
+V
IN
(1)
–V
IN
(2)
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
COMPARATORS
UVLO & OVLO
ON/OFF
CONTROL
(3)
(OPTIONAL)
TRIM
(5)
(OPTIONAL)
+V
OUT
(4)
SWITCH
CONTROL
■
■
■
■
■
■
■
■
■
■
■
■
■
1.2/1.5/1.8/2.5VOUT models source 6 Amps
3.3VOUT models source 4.25 Amps
5/12/15VOUT models deliver full 15 Watts
310kHz synchronous-rectifi er topologies
Guaranteed effi ciencies to 86%
Choice of 3 input voltage ranges:
10-18V, 18-36V, 36-75V
–40 to +60/70°C ambient w/o derating
Fully isolated (1500Vdc); I/O protected
UL1950/EN60950 certifi ed
CE mark (75VIN models)
Standard 2" x 1" packages and pinouts
Optional VOUT trim and on/off control
Pin compatible with Lucent LC/LW Series
➀ 1.2 to 5V-output models use the synchronous-rectifi er confi guration shown above.
12V and 15V-output models employ a standard forward architecture.
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
NEW
1.2, 1.5, 1.8 & 2.5
Volt Models
➀
A Series 7-15W, SINGLE OUTPUT DC/DC CONVERTERS
UWR-1.2/6000-D12A 1.2 6000 45 65 ±0.2% ±0.3% 12 10-18 85/914 79% 81.5% C14, P22
UWR-1.2/6000-D24A 1.2 6000 45 65 ±0.2% ±0.3% 24 18-36 50/454 80.5% 82.5% C14, P22
UWR-1.2/6000-D48A 1.2 6000 45 65 ±0.2% ±0.3% 48 36-75 40/226 80.5% 82.5% C14, P22
UWR-1.5/6000-D12A 1.5 6000 45 65 ±0.2% ±0.3% 12 10-18 85/914 80% 82% C14, P22
UWR-1.5/6000-D24A 1.5 6000 45 65 ±0.2% ±0.3% 24 18-36 50/454 81% 82.5% C14, P22
UWR-1.5/6000-D48A 1.5 6000 45 65 ±0.2% ±0.3% 48 36-75 40/226 81% 83% C14, P22
UWR-1.8/6000-D12A 1.8 6000 50 70 ±0.2% ±0.3% 12 10-18 85/1084 81% 83% C14, P22
UWR-1.8/6000-D24A 1.8 6000 50 70 ±0.2% ±0.3% 24 18-36 50/539 82% 83.5% C14, P22
UWR-1.8/6000-D48A 1.8 6000 50 70 ±0.2% ±0.3% 48 36-75 40/268 82% 84% C14, P22
UWR-2.5/6000-D12A 2.5 6000 60 80 ±0.2% ±0.3% 12 10-18 80/1489 82% 84% C14, P22
UWR-2.5/6000-D24A 2.5 6000 60 80 ±0.2% ±0.3% 24 18-36 45/740 83% 84.5% C14, P22
UWR-2.5/6000-D48A 2.5 6000 60 80 ±0.2% ±0.3% 48 36-75 35/367 83% 85% C14, P22
UWR-3.3/4250-D12A 3.3 4250 85 100 ±0.2% ±0.5% 12 10-18 80/1375 83% 85% C14, P22
UWR-3.3/4250-D24A 3.3 4250 85 100 ±0.2% ±0.5% 24 18-36 45/672 84.5% 87% C14, P22
UWR-3.3/4250-D48A 3.3 4250 85 100 ±0.2% ±0.5% 48 36-75 35/336 85% 87% C14, P22
UWR-5/3000-D12A 5 3000 85 100 ±0.2% ±0.3% 12 10-18 110/1471 83% 85% C14, P22
UWR-5/3000-D24A 5 3000 85 100 ±0.2% ±0.3% 24 18-36 55/710 85.5% 88% C14, P22
UWR-5/3000-D48A 5 3000 85 100 ±0.2% ±0.3% 48 36-75 35/355 85.5% 88% C14, P22
UWR-12/1250-D12A 12 1250 85 100 ±0.2% ±0.3% 12 10-18 20/1471 82.5% 85% C14, P22
UWR-12/1250-D24A 12 1250 85 100 ±0.2% ±0.3% 24 18-36 20/718 85% 87% C14, P22
UWR-12/1250-D48A 12 1250 85 100 ±0.2% ±0.3% 48 36-75 20/359 85% 87% C14, P22
UWR-15/1000-D12A 15 1000 85 100 ±0.2% ±0.3% 12 10-18 20/1471 82.5% 85% C14, P22
UWR-15/1000-D24A 15 1000 85 100 ±0.2% ±0.3% 24 18-36 20/718 85% 87% C14, P22
UWR-15/1000-D48A 15 1000 85 100 ±0.2% ±0.3% 48 36-75 20/359 85% 87% C14, P22
R/N (mVp-p) ➁ Regulation (Max.) Effi ciency Package
V
OUT IOUT VIN Nom. Range IIN ➃ (Case,
Model (Volts) (mA) Typ. Max. Line Load ➂ (Volts) (Volts) (mA) Min. Typ. Pinout)
2
Performance Specifi cations and Ordering Guide
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions, unless otherwise noted.
➁ Ripple/Noise (R/N) is tested/speciifed over a 20MHz bandwidth. All models are specifi ed with two
external 0.47µF multi-layer ceramic capacitors located 2-3 inches from the module being tested.
➀
Wide Range Input
Output Confi guration:
U = Unipolar
Nominal Output Voltage:
1.2, 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 Volts
Maximum Output Current
in mA
Input Voltage Range:
D12 = 10-18 Volts (12V nominal)
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
U WR 3000-/ D48 A-5
Optional Functions
Blank -- Standard product. No options specifi ed.
T Trim function on pin 5. No pin 3.
C On/Off Control function (positive polarity) on pin 3. No pin 5.
CT On/Off Control function (positive polarity) on pin 3. Trim function on pin 5.
N On/Off Control function (negative polarity) on pin 3. No pin 5.
NT On/Off Control function (negative polarity) on pin 3. Trim function on pin 5.
L1 Pin length: 0.110 in. (2.79mm) ±0.010
L2 Pin length: 0.145 in. (3.68mm) ±0.010
Refer to the last page for additional options.
* Pins 3 and 5 are optional.
See Optional Functions and
Technical Notes for details.
CT
A-Series
High Reliability
Optional Functions
See Below/Last Page
Output Input
PART NUMBER STRUCTURE MECHANICAL SPECIFICATIONS
Pin Function P22 Pin Function P22
1 +Input 4 +Output
2 –Input 5 Trim*
3 On/Off Control* 6 Common
I/O Connections
➂ Load regulation is specifi ed over 10%-100% load conditions. 1.5-5V models are stable and
regulate under no-load conditions. 12/15V models have minimum loading requirements.
See Performance/Functional Specifi cations.
➃ Nominal line voltage, no-load/full-load conditions.
PRELIMINARY
Case C14
1
2
4
5
6
PLASTIC CASE
STANDOFF
0.020 (0.51)
3
1.00
(25.40)
2.00
(50.80)
0.20 MIN
(5.08)
0.400
(10.16)
0.800
(20.32)
0.800
(20.32)
0.60
(15.24)
0.49
(12.45)
0.040 ±0.002 DIA.
(1.016 ±0.051)
BOTTOM VIEW
0.200
(5.08)
0.100
(2.54)
0.10
(2.54)
DIMENSION ARE IN INCHES (MM)
LX
UWR Models
7-15W, SINGLE OUTPUT DC/DC CONVERTERS
3
Performance/Functional Specifi cations
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀➁
Input Voltage:
Continuous:
D12 Models 22 Volts
D24 Models 44 Volts
D48 Models 88 Volts
Transient (100msec):
D12 Models 50 Volts
D24 Models 50 Volts
D48 Models 100 Volts
Input Reverse-Polarity Protection Current must be <10 Amps. Brief
duration only. Fusing recommended.
Output Overvoltage Protection:
1.2V/1.5/1.8V Outputs 2.1/2.2/2.5 Volts, unlimited duration
2.5V/3.3V Outputs 3.4/4.4 Volts, unlimited duration
5V/12V/15V Outputs 7.1/16/18 Volts, unlimited duration
Output Current Current limited. Devices can
withstand sustained output short
circuits without damage.
Case Temperature +100°C
Storage Temperature –40 to +105°C
Lead Temperature (soldering, 10 sec.) +300°C
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
Input
Input Voltage Range:
D12A Models 10-18 Volts (12V nominal)
D24A Models 18-36 Volts (24V nominal)
D48A Models 36-75 Volts (48V nominal)
Overvoltage Shutdown:
D12A Models 18.5-21 Volts (20V typical)
D24A Models 37-40 Volts (38V typical)
D48A Models 77-81 Volts (78.5V typical)
Start-Up Threshold: ➂
D12A Models 9.4-9.8 Volts (9.6V typical)
D24A Models 16.5-18 Volts (17V typical)
D48A Models 34-36 Volts (35V typical)
Undervoltage Shutdown: ➂
D12A Models 7.5-8.5 Volts (8V typical)
D24A Models 16-17 Volts (16.5V typical)
D48A Models 32.5-35.5 Volts (34V typical)
Input Current:
Normal Operating Conditions See Ordering Guide
Standby Mode (Off, OV, UV) 5mA
Input Filter Type Pi
Reverse-Polarity Protection Brief duration, 10A maximum
On/Off Control (Optional, Pin 3): ➃ ➄
D12AC, D24AC, & D48AC Models On = open or 13V to +VIN, IIN = 50µA max.
Off = 0-0.8V, IIN = 1mA max.
D12AN, D24AN, & D48AN Models On = 0-0.8V, IIN = 2.6mA max.
Off = open or 3.3-5.5V, IIN = 1mA max.
Output
VOUT Accuracy (50% load):
1.2V/1.5V/1.8V/2.5V/3.3V Outputs ±1.5%, maximum
5/12/15V Outputs ±1%, maximum
Minimum Loading for Specifi cation: ➁
1.2V/1.5V/1.8V/2.5V/3.3V/5V Outputs No load
12V/15V Outputs 10% of IOUT max.
Minimum Loading for Stability: ➁
1.2V/1.5V/1.8V/2.5V/3.3V/5V Outputs No load
12V/15V Outputs 25mA
Ripple/Noise (20MHz BW) ➀ ➅ See Ordering Guide
Line/Load Regulation See Ordering Guide
Effi ciency See Ordering Guide
Isolation Voltage:
Input-to-Output 1500Vdc minimum (functional)
Isolation Capacitance 470pF
Isolation Resistance 100MΩ
Current Limiting:
1.2V/1.5V/1.8V/2.5V/3.3V/5V Outputs Hiccup technique, auto-recovery
12V/15V Outputs Power-limiting technique, auto-recovery
Overvoltage Protection Zener/transorb clamp, magnetic feedback
Temperature Coeffi cient ±0.04% per °C
Dynamic Characteristics
Transient Response (50% load step) 200µsec max. to ±1.5% of fi nal value
Start-Up Time: ➂
VIN to VOUT 50msec
On/Off to VOUT 30msec
Switching Frequency 310kHz (±30kHz)
Environmental
Operating Temperature (Ambient):
Without Derating ➆ –40 to +60/70°C
With Derating to +100°C (See Derating Curves)
Case Temperature:
Maximum Allowable +100°C
Storage Temperature –40 to +105°C
Physical
Dimensions 2" x 1" x 0.49" (51 x 25 x 12.45mm)
Shielding None
Case Material Diallyl phthalate, UL94V-0 rated
Pin Material Brass, solder coated
Weight 1.4 ounces (39.7 grams)
➀ All models are specifi ed with two external 0.47µF multi-layer ceramic capacitors installed
across their output pins.
➁ See Minimum Output Loading Requirements under Technical Notes.
➂ See Technical Notes for details.
➃ The On/Off Control and Trim functions are optional and must be installed by DATEL.
See Optional Functions or contact DATEL for details.
➄ The On/Off Control is designed to be driven with open-collector logic or the application of
appropriate voltages (referenced to –Input, pin 2). Applying a voltage to the On/Off Control
pin when no input voltage is applied to the converter may cause permanent damage.
See Technical Notes.
➅ Output noise maybe further reduced with the addition of additional external output
capacitors. See Technical Notes.
➆ Operating temperature range without derating is model and input-voltage dependent.
See Temperature Derating.
A Series 7-15W, SINGLE OUTPUT DC/DC CONVERTERS
4
Trimming Output Voltages
These converters have a trim capability (pin 5) that allows users to adjust the
output voltage ±5%. Adjustments to the output voltage can be accomplished
via a trim pot, Figure 2, or a single fi xed resistor as shown in Figures 3 and 4.
A single fi xed resistor can increase or decrease the output voltage depending
on its connection. Fixed resistors should have an absolute TCR less than
100ppm/°C to minimize sensitivity to changes in temperature.
A single resistor connected from the Trim (pin 5) to the +Output (pin 4), see
Figure 3, will decrease the output voltage. A resistor connected from the Trim
(pin 5) to Output Common (pin 6) will increase the output voltage.
Trim adjustment greater than 5% can have an adverse effect on the convert-
er's performance and is not recommended.
20kΩ
5-22
Tu r n s
+INPUT +OUTPUT
COMMON
TRIM
–INPUT
ON/OFF
CONTROL
1
2
3
4
5
LOAD
6
+INPUT +OUTPUT
COMMON
TRIM
–INPUT
ON/OFF
CONTROL
1
2
3
4
5
LOAD
6
RTRIM DOWN
+INPUT +OUTPUT
COMMON
TRIM
–INPUT
ON/OFF
CONTROL
1
2
3
4
5
LOAD
6
RTRIM UP
Figure 2. Trim Connections Using A Trim Pot
Figure 4. Trim Connections To Increase Output Voltage Using Fixed Resistors
Figure 3. Trim Connections To Decrease Output Voltage Using Fixed Resistors
TECHNICAL NOTES
Floating Outputs
Since these are isolated DC/DC converters, their outputs are "fl oating."
Designers will usually use the output Common (pin 6) as the ground/return of
the load circuit. You can, however, use the +Output (pin 4) as ground/return to
effectively reverse the output polarity.
Minimum Output Loading Requirements
1.2 to 5V models employ a synchronous-rectifi er design topology. All models
regulate within spec and are stable under no-load conditions. 12/15V models
employ a traditional forward architecture and require 10% loading (125mA for
12V models, 100mA for 15V models) to achieve their listed regulation specs.
12/15V models also have a minimum-load-for-stability requirement (25mA).
For 12/15V models, operation between 25mA and 10% loading will result
in stable operation but regulation may degrade. Operation under no-load
conditions will not damage the 12/15V devices; however they may not meet
all listed specifi cations.
Filtering and Noise Reduction
All A-Series UWR DC/DC Converters achieve their rated ripple and noise
specifi cations using the external input and output capacitors specifi ed in
the Performance/Functional Specifi cations table. In critical applications, input/
output noise may be further reduced by installing additional external I/O caps.
Input capacitors should be selected for bulk capacitance, low ESR and high
rms-ripple-current ratings. Output capacitors should be selected for low ESR
and appropriate frequency response. All caps should have appropriate volt-
age ratings and be mounted 2-3 inches from the converter to achieve
published ratings.
The most effective combination of external I/O capacitors will be a function
of your particular load and layout conditions. Our Applications Engineers will
be happy to recommend potential solutions and can discuss the possibility of
our modifying a given device’s internal fi ltering to meet your specifi c require-
ments. Contact our Applications Engineering Group for additional details.
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. Fuses should also be
used if the possibility of sustained, non-current-limited, input-voltage polarity
reversals exists. For DATEL A-Series UWR 7-15 Watt DC/DC Converters, you
should use slow-blow type fuses with values no greater than the following.
VIN Range Fuse Value
"D12A" Models 3 Amps
"D24A" Models 2 Amps
"D48A" Models 1 Amp
UWR Models
7-15W, SINGLE OUTPUT DC/DC CONVERTERS
Accuracy of adjustment is subject to tolerances or resistor values
and factory-adjusted output accuracy.
VO = desired output voltage.
Model Trim Equation Start-Up Threshold and Undervoltage Shutdown
Under normal start-up conditions, devices will not begin to regulate until the
ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for
"D48A" models). Once operating, devices will not turn off until the input volt-
age drops below the Undervoltage Shutdown/Lockout limit (34V for "D48A"
models). Subsequent re-start will not occur until the input is brought back
up to the Start-Up Threshold. This built-in hysteresis obviously avoids any
indeterminate on/off situations at a single voltage.
Start-Up Time
The VIN to VOUT Start-Up Time is the interval between the time at which
a ramping input voltage crosses the turn-on threshold point and the fully-
loaded output voltage enters and remains within its specifi ed accuracy band.
Actual measured times will vary with input source impedance, external input
capacitance, and the slew rate and fi nal value of the input voltage as it
appears to the converter.
The On/Off to VOUT Start-Up Time assumes the converter is turned off via
the On/Off Control with the nominal input voltage already applied to the
converter. The specifi cation defi nes the interval between the time at which the
converter is turned on and the fully-loaded output voltage enters and remains
within its specifi ed accuracy band.
–16.9
DOWN
RT (kΩ) = 3.3 – VO
2.49(VO – 1.27)
UWR-3.3/4250-D12A
UWR-3.3/4250-D24A
UWR-3.3/4250-D48A –16.9
UP
RT (kΩ) = VO – 3.3
3.16
–15
DOWN
RT (kΩ) = 5 – VO
2.49(VO – 2.527)
UWR-5/3000-D12A
UWR-5/3000-D24A
UWR-5/3000-D48A –15
UP
RT (kΩ) = VO – 5
6.292
–2
DOWN
RT (kΩ) = 1.5 – VO
1.6(VO – 1.23)
UWR-1.5/6000-D12A
UWR-1.5/6000-D24A
UWR-1.5/6000-D48A –2
UP
RT (kΩ) = VO – 1.5
1.968
–2.49
DOWN
RT (kΩ) = 1.8 – VO
0.995(VO – 1.24)
UWR-1.8/6000-D12A
UWR-1.8/6000-D24A
UWR-1.8/6000-D48A –2.49
UP
RT (kΩ) = VO – 1.8
1.23
–11
DOWN
RT (kΩ) = 2.5 – VO
2(VO – 1.24)
UWR-2.5/6000-D12A
UWR-2.5/6000-D24A
UWR-2.5/6000-D48A –11
UP
RT (kΩ) = VO – 2.5
2.48
–49.9
DOWN
RT (kΩ) = 12 – VO
6.34(VO – 5.714)
UWR-12/1250-D12A
UWR-12/1250-D24A
UWR-12/1250-D48A –49.9
UP
RT (kΩ) = VO – 12
36.23
–63.4
DOWN
RT (kΩ) = 15 – VO
7.87(VO – 7.136)
–2
DOWN
RT (kΩ) = 1.2 – VO
1.62(VO – 0.9)
UWR-1.2/6000-D12A
UWR-1.2/6000-D24A
UWR-1.2/6000-D48A –2
UP
RT (kΩ) = VO – 1.2
1.458
UWR-15/1000-D12A
UWR-15/1000-D24A
UWR-15/1000-D48A –63.4
UP
RT (kΩ) = VO – 15
56.16
5
A Series 7-15W, SINGLE OUTPUT DC/DC CONVERTERS
TEMPERATURE DERATING
The thermal performance of A-Series UWR 7-15 Watt DC/DC Converters
is depicted in the derating curves shown below. All devices, when operated
at full load, in still ambient air, over their full specifi ed input voltage range,
can safely operate to TA maximum. All models, other than the D12A models
(10-18 Volt input range), can operate at higher ambient temperatures if the
input range is narrowed. For example, model UWR-5/3000-D48A can operate
safely to +70°C if the input range is kept between 36 and 48 Volts. Contact
DATEL's Applications Engineering Group if you need additional details.
6
Output Power (Watts)
Ambient Temperature (°C)
D24A and D48A Temperature Derating for 1.5V Output Models
10
9
8
7
6
5
4
3
2
1
0
–400404550556065707580859095100
VIN = 18V-27V (D24A)
VIN = 36V-48V (D48A)
VIN = 18V-30V (D24A)
VIN = 36V-60V (D48A)
VIN = 18V-36V (D24A)
VIN = 36V-75V (D48A)
Output Power (Watts)
Ambient Temperature (°C)
D24A and D48A Temperature Derating for 1.8V Output Models
12
11
10
9
8
7
6
5
4
3
2
1
0
–400404550556065707580859095100
VIN = 18V-27V (D24A)
VIN = 36V-48V (D48A)
VIN = 18V-30V (D24A)
VIN = 36V-60V (D48A)
VIN = 18V-36V (D24A)
VIN = 36V-75V (D48A)
Output Power (Watts)
Ambient Temperature (°C)
15.0
13.5
12.0
10.5
9.0
7.5
6.0
4.5
3
1.5
0
–400 404550556065707580859095100
VOUT = 2.5V, 5V, 12V and 15V
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.5V
VOUT = 1.2V
D12A (10-18V) Temperature Derating
Output Power (Watts)
Ambient Temperature (°C)
D24A and D48A Temperature Derating for 3.3V Output Models
14
12
10
8
6
4
2
0
–400404550556065707580859095100
VIN = 18V-27V (D24A)
VIN = 36V-48V (D48A)
VIN = 18V-30V (D24A)
VIN = 36V-60V (D48A)
VIN = 18V-36V (D24A)
VIN = 36V-75V (D48A)
Output Power (Watts)
Ambient Temperature (°C)
15.0
13.5
12.0
10.5
9.0
7.5
6.0
4.5
3
1.5
0
–400 404550556065707580859095100
VIN = 18V-27V (D24A)
VIN = 36V-48V (D48A)
VIN = 18V-30V (D24A)
VIN = 36V-60V (D48A)
VIN = 18V-36V (D24A)
VIN = 36V-75V (D48A)
D24A and D48A Temperature Derating for 2.5/5/12 /15V Output Models
UWR Models
7-15W, SINGLE OUTPUT DC/DC CONVERTERS
EFFICIENCY VS. LINE AND LOAD
90
85
80
75
70
65
60
55
50
45
Load Current (Amps)
Efficiency (%)
V
IN
= 10V
V
IN
= 12V
V
IN
= 18V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-1.8/6000-D12A Efficiency vs. Line and Load
90
85
80
75
70
65
60
55
50
45
Load Current (Amps)
Efficiency (%)
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-1.8/6000-D48A Efficiency vs. Line and Load
90
85
80
75
70
65
60
55
50
45
Load Current (Amps)
Efficiency (%)
V
IN
= 18V
V
IN
= 24V
V
IN
= 36V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-1.8/6000-D24A Efficiency vs. Line and Load
85
80
75
70
65
60
55
50
45
40
35
Load Current (Amps)
Efficiency (%)
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-1.5/6000-D48A Efficiency vs. Line and Load
85
80
75
70
65
60
55
50
45
40
35
Load Current (Amps)
Efficiency (%)
V
IN
= 18V
V
IN
= 24V
V
IN
= 36V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-1.5/6000-D24A Efficiency vs. Line and Load
85
80
75
70
65
60
55
50
45
40
35
Load Current (Amps)
Efficiency (%)
V
IN
= 10V
V
IN
= 12V
V
IN
= 18V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-1.5/6000-D12A Efficiency vs. Line and Load
7
Typical Performance Curves for UWR 7-15W A-Series
A Series 7-15W, SINGLE OUTPUT DC/DC CONVERTERS
90
85
80
75
70
65
60
55
50
45
UWR-3.3/4250-D12A Efficiency vs. Line and Load
Load Current (Amps)
Efficiency (%)
V
IN
= 10V
V
IN
= 12V
V
IN
= 18V
0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3
90
85
80
75
70
65
60
55
50
45
UWR-3.3/4250-D24A Efficiency vs. Line and Load
Load Current
(
Am
p
s
)
Efficiency (%)
V
IN
= 18V
V
IN
= 24V
V
IN
= 36V
0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3
90
85
80
75
70
65
60
55
50
45
UWR-3.3/4250-D48A Efficiency vs. Line and Load
0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3
Load Current (Amps)
Efficiency (%)
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
90
85
80
75
70
65
60
55
50
45
Load Current (Amps)
Efficiency (%)
V
IN
= 18V
V
IN
= 24V
V
IN
= 36V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-2.5/6000-D24A Efficiency vs. Line and Load
90
85
80
75
70
65
60
55
50
45
Load Current (Amps)
Efficiency (%)
V
IN
= 10V
V
IN
= 12V
V
IN
= 18V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-2.5/6000-D12A Efficiency vs. Line and Load
90
85
80
75
70
65
60
55
50
45
Load Current (Amps)
Efficiency (%)
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
0.6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6
UWR-2.5/6000-D48A Efficiency vs. Line and Load
8
Typical Performance Curves for UWR 7-15W A-Series
UWR Models
7-15W, SINGLE OUTPUT DC/DC CONVERTERS
90
85
80
75
70
65
60
55
50
45
40
UWR-5/3000-D12A Efficiency vs. Line and Load
Load Current (Amps)
Efficiency (%)
V
IN
= 10V
V
IN
= 12V
V
IN
= 18V
0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3
90
85
80
75
70
65
60
55
50
45
40
UWR-5/3000-D24A Efficiency vs. Line and Load
Load Current (Amps)
Efficiency (%)
V
IN
= 18V
V
IN
= 24V
V
IN
= 36V
0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3
90
85
80
75
70
65
60
55
50
45
40
UWR-5/3000-D48A Efficiency vs. Line and Load
0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3
Load Current (Amps)
Efficiency (%)
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
9
90
85
80
75
70
65
60
55
50
UWR-12/1250-D12A Efficiency vs. Line and Load
Load Current
(
Am
p
s
)
Efficiency (%)
V
IN
= 10V
V
IN
= 12V
V
IN
= 18V
0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3
90
85
80
75
70
65
60
55
50
UWR-12/1250-D24A Efficiency vs. Line and Load
Load Current (Amps)
Efficiency (%)
V
IN
= 18V
V
IN
= 24V
V
IN
= 36V
0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3
90
85
80
75
70
65
60
55
50
UWR-12/1250-D48A Efficiency vs. Line and Load
0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3
Load Current (Amps)
Efficiency (%)
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
Typical Performance Curves for UWR 7-15W A-Series
A Series 7-15W, SINGLE OUTPUT DC/DC CONVERTERS
90
85
80
75
70
65
60
55
UWR-15/1000-D12A Efficiency vs. Line and Load
0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1
Load Current (Amps)
Efficiency (%)
V
IN
= 10V
V
IN
= 12V
V
IN
= 18V
90
85
80
75
70
65
60
55
UWR-15/1000-D24A Efficiency vs. Line and Load
Load Current (Amps)
Efficiency (%)
V
IN
= 18V
V
IN
= 24V
V
IN
= 36V
0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1
90
85
80
75
70
65
60
55
UWR-15/1000-D48A Efficiency vs. Line and Load
Load Current (Amps)
Efficiency (%)
V
IN
= 36V
V
IN
= 48V
V
IN
= 75V
0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1
10
EFFICIENCY VS. LINE AND LOAD
Typical Performance Curves for UWR 7-15W A-Series
Output Ripple and Noise (PARD)
(VIN = nominal, VOUT = 2.5V @ 6A, two external 0.47µF output capacitors.)
20mV, 1µsec/div, 20MHz BW
Output Ripple and Noise (PARD)
(VIN = nominal, VOUT = 1.8V @ 6A, two external 0.47µF output capacitors.)
20mV, 1µsec/div, 20MHz BW
Output Ripple and Noise (PARD)
(VIN = nominal, VOUT = 1.5V @ 6A, two external 0.47µF output capacitors.)
20mV, 1µsec/div, 20MHz BW
UWR Models
7-15W, SINGLE OUTPUT DC/DC CONVERTERS
11
20mV, 1µsec/div, 20MHz BW
Output Ripple and Noise (PARD)
(VIN = nominal, VOUT = 12V @ 1.25A, two ext. 0.47µF output capacitors.)
Output Ripple and Noise (PARD)
(VIN = nominal, VOUT = 15V @ 1A, two external 0.47µF output capacitors.)
20mV, 2.5µsec/div, 20MHz BW
20mV, 1µsec/div, 20MHz BW
Output Ripple and Noise (PARD)
(VIN = nominal, VOUT = 3.3V @ 4.25A, two ext. 0.47µF output capacitors.)
20mV, 1µsec/div, 20MHz BW
Output Ripple and Noise (PARD)
(VIN = nominal, VOUT = 5V @ 3A, two external 0.47µF output capacitors.)
Typical Performance Curves for UWR 7-15W A-Series
Options and Adaptations
Optional Functions
The versatile A-Series 7-15W DC/DC Converters offer numerous electrical
and mechanical options. Per the Ordering Guide on page 2, the trailing "A"
(for A-Series) in each part number pertains to the base part number. Part-
number suffi xes are added after the "A," indicating the selection of standard
options. The resulting part number is a "standard product" and is available
to any customer desiring that particular combination of options. As described
below, selecting certain options will result in the installation of additional pins
in certain locations.
Suffi x Description
Blank No VOUT Trim or On/Off Control functions added (no I/O pins
installed in the pin 3 and pin 5 positions). The pin length remains at
0.2 inches (5.08 mm).
T Add a VOUT Trim function on pin 5. No pin 3 installed.
C Add an On/Off Control function on pin 3 (with positive polarity).
No pin 5 installed.
CT Add the On/Off Control function (with positive polarity) on pin 3
and add the VOUT trim function on pin 5.
N Add an On/Off Control function on pin 3 with negative polarity. No
pin 5 installed.
NT Add the On/Off Control function with negative polarity on pin 3
and add the VOUT trim function on pin 5.
L1 Trim the pin length to 0.110 ±0.010 inches (2.79 ±0.25mm). This
option requires a 100-piece minimum order quantity.
L2 Trim the pin length to 0.145 ±0.010 inches (3.68 ±0.25mm). This
option requires a 100-piece minimum order quantity.
Adaptations
There are various additional confi gurations available on A-Series 7-15W
DC/DC's. Because designating each of them with a standard part-number
suffi x would result in an unmanageable matrix of part numbers, such are
designated by DATEL and assigned 5-digit "part-number suffi xes. Once a
confi guration has been requested by a customer and created by DATEL, the
resulting product is available to any customer as a "standard" off-the-shelf
product. Consequently, the following products are offered for sale:
UWR-3.3/4250-D48AT-30690
Standard product, 48VIN, 3.3VOUT/4.25A with a VOUT Trim function added in
the pin 3 position, with adapted current limit set point to 6.5A min. and with
removed Input Overvoltage Shutdown function.
UWR-5/3000-D48ACT-30770
Standard product, 48VIN, 5VOUT/3A with On/Off Control function (positive
polarity) on pin 3, VOUT Trim function added on pin 5. Adaptations:
Trim equations are Tyco/Lucent-compatible. Transformer isolation system
has been enhanced to meet the BASIC INSULATION requirements of
UL60950/EN60950. I/O pins are 25-mil-square Tyco/Lucent compatible.
Shielded metal case is connected to +VIN pin 1. Input Overvoltage Shutdown
function has been removed.
Contact DATEL directly if you are interested in your own set of options/
adaptations. Further examples of such include, but are not limited to the
following:
Competitor-compatible pin shape and/or length, instead of DATEL's stan-
dard 40-mil round pins.
Shielded metal case connected to the I/O pin of your choice.
Electrical modifi cation of the VOUT-Trim functionality/equations and/or the
On/Off Control function to be competitor-compatible.
Raising the Input Overvoltage Lockout/Shutdown trip point to a level that
enables the device to experience brief input transients (of known peak
value and duration) without shutting down. For example, we can move
the threshold to +110V for applications that anticipate 100V, 100msec
input transients.
A Series 7-15W, SINGLE OUTPUT DC/DC CONVERTERS
DATEL 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. Specifi cations are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444
DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01
DATEL GmbH München, Germany Tel: 89-544334-0
DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DS-0426C 3/02
DATEL, Inc. 11 Cabot Boulevard, Mansfi eld, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
Internet: www.datel.com Email: sales@datel.com
Data Sheet Fax Back: (508) 261-2857
INNOVATION and EX C ELL E N C
E
®
®
ISO-9001 REGISTERED
12
