®
®
NEW
INNOVATION and EXCELLENCE
1.5, 1.8 & 2.5 Volt
Models
Single Output
A-Series, UWR Models
High-Density, 2" x 1"
1-6 Amp, 9-15 Watt DC/DC's
A-SERIES
Features
■
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-rectifier topologies
■
Guaranteed efficiencies 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 certified
■
CE mark (75VIN models)
■
Standard 2" x 1" packages and pinouts
■
Optional VOUT trim, sync, on/off control
■
Pin compatible with Lucent LC/LW Series
The new 1.5V, 1.8V and 2.5V models in DATEL’s flagship 9-15 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-efficiency (to 88%), synchronousrectifier topology with the newest components and time-tested, fully automated,
SMT-on-pcb construction, these UWR Models are able to bring you 9-15W (@ 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 1.5, 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 filters, input undervoltage and overvoltage lockout, input
reverse-polarity protection, output overvoltage protection, output current limiting, and
continuous short-circuit protection. On/off control, sync, and output-trim functions are
optional (see Optional Functions). All models are certified to IEC950, UL1950 and
EN60950 safety requirements for OPERATIONAL insulation. "D48" models (36-75V
inputs) are CE marked.
UWR 9-15W 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.
+VOUT
+VIN
SWITCH
CONTROL
–VOUT
–VIN
PWM
CONTROLLER
ON/OFF
CONTROL
OR SYNC
(OPTIONAL)
OPTO
ISOLATION
REFERENCE &
ERROR AMP
TRIM
(OPTIONAL)
UVLO & OVLO
COMPARATORS
1.5, 1.8, 2.5, 3.3V and 5V-output models use the synchronous-rectifier configuration shown above.
12V and 15V-output models employ a standard forward architecture.
Figure 1. Simplified Schematic
DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: [email protected] · Internet: www.datel.com
A Series
9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
Performance Specifications and Ordering Guide
➀
Input
PRELIMINARY
Output
R/N (mVp-p) ➁
Regulation (Max.)
Range
(Volts)
IIN ➃
(mA)
Package
(Case,
Pinout)
Efficiency
Model
VOUT
(Volts)
IOUT
(mA)
Typ.
Max.
Line
Load ➂
VIN Nom.
(Volts)
Min.
Typ.
UWR-1.5/6000-D12A
1.5
6000
45
65
±0.2%
±0.3%
12
10-18
85/914
TBD
82%
C14, P22
UWR-1.5/6000-D24A
1.5
6000
45
65
±0.2%
±0.3%
24
18-36
50/454
TBD
82.5%
C14, P22
UWR-1.5/6000-D48A
1.5
6000
45
65
±0.2%
±0.3%
48
36-75
40/226
TBD
83%
C14, P22
UWR-1.8/6000-D12A
1.8
6000
50
70
±0.2%
±0.3%
12
10-18
85/1084
TBD
83%
C14, P22
UWR-1.8/6000-D24A
1.8
6000
50
70
±0.2%
±0.3%
24
18-36
50/539
TBD
83.5%
C14, P22
UWR-1.8/6000-D48A
1.8
6000
50
70
±0.2%
±0.3%
48
36-75
40/268
TBD
84%
C14, P22
UWR-2.5/6000-D12A
2.5
6000
60
80
±0.2%
±0.3%
12
10-18
80/1489
TBD
84%
C14, P22
UWR-2.5/6000-D24A
2.5
6000
60
80
±0.2%
±0.3%
24
18-36
45/740
TBD
84.5%
C14, P22
UWR-2.5/6000-D48A
2.5
6000
60
80
±0.2%
±0.3%
48
36-75
35/367
TBD
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
C14, P22
3.3
4250
85
100
±0.2%
±0.5%
48
36-75
35/336
85%
87%
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
C14, P22
UWR-5/3000-D48A
5
3000
85
100
±0.2%
±0.3%
48
36-75
35/355
85.5%
88%
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
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 specified with two
external 0.47µF multi-layer ceramic capacitors installed across their output pins.
P A R T
N U M B E R
➂ Load regulation is specified 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 Specifications.
➃ Nominal line voltage, no-load/full-load conditions.
M E C H A N I C A L
S T R U C T U R E
S P E C I F I C A T I O N S
U WR - 5 / 3000 - D48 A CT LX
Output Configuration:
U = Unipolar
2.00
(50.80)
Pin Length Option:
L1 = 0.110"
L2 = 0.145"
PLASTIC CASE
0.49
(12.45)
Case C14
Wide Range Input
Nominal Output Voltage:
1.5, 1.8, 2.5, 3.3, 5, 12 or 15 Volts
Maximum Output Current
in mA
STANDOFF
0.020 (0.51)
Optional Functions
See Below
Input Voltage Range:
D12 = 10-18 Volts (12V nominal)
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
4
0.200
(5.08)
BOTTOM VIEW
DIMENSION ARE IN INCHES (MM)
I/O Connections
Pin Function P22
1
+Input
2
–Input
3
On/Off Control*
4
+Output
5
Trim*
6
Common
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.
Sync function on pin 3. No pin 5.
ST Sync function on pin 3. Trim function on pin 5.
Blank -- No Trim function. No On/Off Control function.
2
0.400
(10.16)
6
3
L1 Pin length: 0.110 in. (2.79mm) ±0.010
L2 Pin length: 0.145 in. (3.68mm) ±0.010
0.800
(20.32)
2
Trim function on pin 5. No pin 3.
CT On/Off Control function (positive polarity) on pin 3. Trim function on pin 5.
0.100
(2.54)
5
1.00
(25.40)
C On/Off Control function (positive polarity) on pin 3. No pin 5.
S
0.60
(15.24)
0.800
(20.32)
1
Optional Functions
T
0.040 ±0.002 DIA.
(1.016 ±0.051)
0.20 MIN
(5.08)
A-Series
High Reliability
0.10
(2.54)
* Pins 3 and 5 are optional.
See Optional Functions and
Technical Notes for details.
UWR Models
9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
Performance/Functional Specifications
Dynamic Characteristics
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀➁
Input
Input Voltage Range:
D12A Models
D24A Models
D48A Models
10-18 Volts (12V nominal)
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
Overvoltage Shutdown:
D12A Models
D24A Models
D48A Models
18.5-21 Volts (20V typical)
37-40 Volts (38V typical)
77-81 Volts (78.5V typical)
Start-Up Threshold: ➂
D12A Models
D24A Models
D48A Models
9.4-9.8 Volts (9.6V typical)
16.5-18 Volts (17V typical)
34-36 Volts (35V typical)
Undervoltage Shutdown: ➂
D12A Models
D24A Models
D48A Models
7.5-8.5 Volts (8V typical)
16-17 Volts (16.5V typical)
32.5-35.5 Volts (34V typical)
Input Current:
Normal Operating Conditions
Standby Mode (Off, OV, UV)
See Ordering Guide
5mA
Input Filter Type
Pi
Reverse-Polarity Protection
Brief duration, 10A maximum
200µsec max. to ±1.5% of final value
Start-Up Time: ➂
VIN to VOUT
On/Off to VOUT
50msec
30msec
Switching Frequency
310kHz (±30kHz)
Environmental
Operating Temperature (Ambient):
Without Derating ➆
With Derating
–40 to +60/70°C
to +100°C (See Derating Curves)
Case Temperature:
Maximum Allowable
+100°C
Storage Temperature
–40 to +105°C
Physical
Dimensions
On/Off Control (Optional, Pin 3): ➃ ➄
D12AC, D24AC, & D48AC Models
D12AN, D24AN, & D48AN Models
Sync (Optional, Pin 3) ➂ ➃
Input Threshold (Rising edge active)
Input Voltage Low
Input Voltage High
Input Resistance
Output High Voltage (100µA load)
Output Drive Current
Input/Output Pulse Width
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 specified 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, Sync 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.
On = open or 13V - +VIN, IIN = 50µA max.
Off = 0-0.8V, IIN = 1mA max.
On = 0-0.8V, IIN = 2.6mA max.
Off = open or 3.3-5.5V, IIN = 1mA max.
1-2.7 Volts
0-0.9 Volts
2.8-5 Volts
35kΩ minimum
3.5-4.8 Volts
35mA
160-360nsec
Absolute Maximum Ratings
Input Voltage:
Continuous:
D12 Models
D24 Models
D48 Models
Transient (100msec):
D12 Models
D24 Models
D48 Models
Output
VOUT Accuracy (50% load):
1.5V/1.8V/2.5V/3.3V Outputs
5/12/15V Outputs
Transient Response (50% load step)
±1.5%, maximum
±1%, maximum
Minimum Loading for Specification: ➁
1.5V/1.8V/2.5V/3.3V/5V Outputs
No load
12V/15V Outputs
10% of IOUT max.
Input Reverse-Polarity Protection
Minimum Loading for Stability: ➁
1.5V/1.8V/2.5V/3.3V/5V Outputs
12V/15V Outputs
No load
25mA
Ripple/Noise (20MHz BW) ➀ ➅
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Output Overvoltage Protection:
1.5/1.8V Outputs
2.5V/3.3V Outputs
5V/12V/15V Outputs
Efficiency
See Ordering Guide
Output Current
22 Volts
44 Volts
88 Volts
50 Volts
50 Volts
100 Volts
Current must be <10 Amps. Brief
duration only. Fusing recommended.
TBD/TBD Volts, unlimited duration
TBD/4.5 Volts, unlimited duration
6.8/15/18 Volts, unlimited duration
Current limited. Devices can
withstand sustained output short
circuits without damage.
Isolation Voltage:
Input-to-Output
1500Vdc minimum
Isolation Capacitance
470pF
Case Temperature
+100°C
100MΩ
Storage Temperature
–40 to +105°C
Lead Temperature (soldering, 10 sec.)
+300°C
Isolation Resistance
Current Limiting:
1.5V/1.8V/2.5V/3.3V/5V Outputs
12V/15V Outputs
Hiccup technique, auto-recovery
Power-limiting technique, auto-recovery
Overvoltage Protection
Zener/transorb clamp, magnetic feedback
Temperature Coefficient
±0.04% per °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 Specifications Table is not implied.
3
A Series
T E C H N I C A L
9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
Trim adjustment greater than 5% can have an adverse effect on the converter's performance and is not recommended.
N O T E S
Floating Outputs
4
1
Since these are isolated DC/DC converters, their outputs are "floating."
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.
+OUTPUT
+INPUT
2
–INPUT
Minimum Output Loading Requirements
3
1.5-5V models employ a synchronous-rectifier 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 specifications.
ON/OFF
CONTROL
TRIM
COMMON
5
20kΩ
5-22
Turns
LOAD
6
Figure 2. Trim Connections Using A Trim Pot
1
+INPUT
+OUTPUT
4
RTRIM DOWN
2
–INPUT
3
Filtering and Noise Reduction
All A-Series UWR 9-15 Watt DC/DC Converters achieve their rated ripple and
noise specifications using the external input and output capacitors specified
in the Performance/Functional Specifications 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
voltage ratings and be mounted as close to the converters as possible.
ON/OFF
CONTROL
TRIM
COMMON
5
LOAD
6
Figure 3. Trim Connections To Decrease Output Voltage Using Fixed Resistors
1
+INPUT
+OUTPUT
2
–INPUT
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 filtering to meet your specific requirements. Contact our Applications Engineering Group for additional details.
3
ON/OFF
CONTROL
TRIM
4
5
LOAD
RTRIM UP
COMMON
6
Figure 4. Trim Connections To Increase Output Voltage Using Fixed Resistors
Input Fusing
Model
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 9-15 Watt DC/DC Converters, you
should use slow-blow type fuses with values no greater than the following.
VIN Range
"D12A" Models
"D24A" Models
"D48A" Models
Fuse Value
3 Amps
2 Amps
1 Amp
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 fixed resistor as shown in Figures 3 and 4.
A single fixed 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 Equation
UWR-3.3/4250-D12A
UWR-3.3/4250-D24A
UWR-3.3/4250-D48A
RTDOWN (kΩ) =
UWR-5/3000-D12A
UWR-5/3000-D24A
UWR-5/3000-D48A
RTDOWN (kΩ) =
UWR-12/1250-D12A
UWR-12/1250-D24A
UWR-12/1250-D48A
RTDOWN (kΩ) =
UWR-15/1000-D12A
UWR-15/1000-D24A
UWR-15/1000-D48A
RTDOWN (kΩ) =
RTUP (kΩ) =
RTUP (kΩ) =
RT UP (kΩ) =
RTUP (kΩ) =
2.49(VO – 1.27)
3.3 – VO
3.16
VO – 3.3
–16.9
–16.9
2.49(VO – 2.527)
–15
5 – VO
6.292
VO – 5
–15
6.34(VO – 5.714)
–49.9
12 – VO
36.23
VO – 12
–49.9
7.87(VO – 7.136)
–63.4
15 – VO
56.16
VO – 15
–63.4
Accuracy of adjustment is subject to tolerances or resistor values
and factory-adjusted output accuracy. VO = desired output voltage.
4
UWR Models
9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
D24A Temperature Derating Curves for 5V, 12V and 15V Output Models
Start-Up Threshold and Undervoltage Shutdown
15.0
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 voltage 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.
VIN = 18V-27V
13.5
12.0
Output Power (Watts)
10.5
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 fullyloaded output voltage enters and remains within its specified accuracy band.
Actual measured times will vary with input source impedance, external input
capacitance, and the slew rate and final value of the input voltage as it
appears to the converter.
VIN = 18V-30V
9.0
7.5
VIN = 18V-36V
6.0
4.5
3
1.5
0
–40
0
40
45
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
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 specification defines the interval between the time at which the
converter is turned on and the fully-loaded output voltage enters and remains
within its specified accuracy band.
D24A and D48A Temperature Derating Curves for 3.3V Output Models
14
VIN = 18V-27V (D24A)
VIN = 36V-48V (D48A)
12
Output Power (Watts)
10
TEMPERATURE DERATING
The thermal performance of A-Series UWR 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 specified input voltage range, can
safely operate to +60°C. 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.
VIN = 18V-30V (D24A)
VIN = 36V-60V (D48A)
8
VIN = 18V-36V (D24A)
6
VIN = 36V-75V (D48A)
4
2
0
–40
0
40
45
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
D48A Temperature Derating Curves for 5V, 12V and 15V Output Models
D12A (10-18V) Temperature Derating Curves
15.0
15.0
VIN = 36V-48V
13.5
13.5
12.0
12.0
10.5
10.5
Output Power (Watts)
Output Power (Watts)
VOUT = 5V, 12V and 15V
9.0
7.5
VOUT = 3.3V
6.0
4.5
VIN = 36V-60V
9.0
7.5
VIN = 36V-75V
6.0
4.5
3
3
1.5
1.5
0
0
–40
0
40
45
50
55
60
65
70
75
80
85
90
95
–40
100
0
40
45
50
55
60
65
70
75
Ambient Temperature (°C)
Ambient Temperature (°C)
5
80
85
90
95
100
A Series
9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
EFFICIENCY VS. LINE AND LOAD
UWR-5/3000-D12A Efficiency vs. Line and Load
90
85
85
80
80
75
75
Efficiency (%)
Efficiency (%)
UWR-3.3/4250-D12A Efficiency vs. Line and Load
90
VIN = 10V
70
65
VIN = 12V
60
VIN = 10V
70
VIN = 12V
65
60
55
VIN = 18V
VIN = 18V
55
50
50
45
45
40
0.4
0.9
1.4
1.8
2.3
2.8
3.3
3.8
0.3
4.3
0.6
1.0
2
2.3
2.7
3
2.7
3
2.7
3
UWR-5/3000-D24A Efficiency vs. Line and Load
UWR-3.3/4250-D24A Efficiency vs. Line and Load
90
90
85
85
80
80
75
75
Efficiency (%)
Efficiency (%)
1.7
Load Current (Amps)
Load Current (Amps)
VIN = 18V
70
65
VIN = 24V
60
VIN = 18V
70
VIN = 24V
65
60
55
VIN = 36V
VIN = 36V
55
50
50
45
40
45
0.4
0.9
1.4
1.8
2.3
2.8
3.3
3.8
0.3
4.3
0.6
1.0
1.3
1.7
2
2.3
Load Current (Amps)
Load Current (Amps)
UWR-3.3/4250-D48A Efficiency vs. Line and Load
UWR-5/3000-D48A Efficiency vs. Line and Load
90
90
85
85
80
80
75
75
Efficiency (%)
Efficiency (%)
1.3
VIN = 36V
70
65
VIN = 48V
60
VIN = 36V
70
VIN = 48V
65
60
55
VIN = 75V
VIN = 75V
55
50
50
45
45
40
0.4
0.9
1.4
1.8
2.3
2.8
3.3
3.8
4.3
0.3
Load Current (Amps)
0.6
1.0
1.3
1.7
2
Load Current (Amps)
6
2.3
UWR Models
9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
EFFICIENCY VS. LINE AND LOAD
UWR-15/1000-D12A Efficiency vs. Line and Load
UWR-12/1250-D12A Efficiency vs. Line and Load
90
90
85
85
80
75
Efficiency (%)
Efficiency (%)
80
VIN = 10V
70
VIN = 12V
65
VIN = 18V
VIN = 10V
75
VIN = 12V
70
VIN = 18V
65
60
60
55
55
50
0.1
0.2
0.4
0.5
0.7
0.8
1.0
1.1
0.1
1.3
0.2
0.3
Load Current (Amps)
UWR-12/1250-D24A Efficiency vs. Line and Load
90
85
85
0.7
0.8
0.9
1
0.9
1
0.9
1
80
75
Efficiency (%)
Efficiency (%)
0.6
UWR-15/1000-D24A Efficiency vs. Line and Load
90
80
VIN = 18V
70
VIN = 24V
65
VIN = 36V
VIN = 18V
75
VIN = 24V
70
VIN = 36V
65
60
60
55
50
55
0.1
0.2
0.4
0.5
0.7
0.8
1.0
1.1
1.3
0.1
0.2
0.3
Load Current (Amps)
0.4
0.6
0.7
0.8
Load Current (Amps)
UWR-12/1250-D48A Efficiency vs. Line and Load
UWR-15/1000-D48A Efficiency vs. Line and Load
90
90
85
85
80
80
75
Efficiency (%)
Efficiency (%)
0.4
Load Current (Amps)
VIN = 36V
70
VIN = 48V
65
VIN = 75V
VIN = 36V
75
VIN = 48V
70
VIN = 75V
65
60
60
55
50
55
0.1
0.2
0.4
0.5
0.7
0.8
1.0
1.1
0.1
1.3
Load Current (Amps)
0.2
0.3
0.4
0.6
0.7
Load Current (Amps)
7
0.8
A Series
9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S
Typical Performance Curves
Output Ripple and Noise (PARD)
Output Ripple and Noise (PARD)
(VIN = nominal, 3.3V @ 4.25A, two external 0.47µF output capacitors.)
(VIN = nominal, 12V @ 1.25A, two external 0.47µF output capacitors.)
20mV/div, 20MHz BW
20mV/div, 20MHz BW
Output Ripple and Noise (PARD)
Output Ripple and Noise (PARD)
(VIN = nominal, 5V @ 3A, two external 0.47µF output capacitors.)
(VIN = nominal, 15V @ 1A, two external 0.47µF output capacitors.)
20mV/div, 20MHz BW
®
20mV/div, 20MHz BW
®
INNOVATION and EXCELLENCE
ISO-9001 REGISTERED
DS-0426B
9/01
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
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
Internet: www.datel.com
Email: [email protected]
Data Sheet Fax Back: (508) 261-2857
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. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
8