Single Output UEP Models
Ultra-High Density, 2" x 1", 1.2-6 Amp,15-30 Watt DC/DC’s
FEATURES
n
PRODUCT OVERVIEW
The UEP Series DC/DC Converters deliver
the most power/current (up to 30W/6Amps)
from a 1" x 2" package. And because of their
footprint compatibility, they can be used as
drop in replacements for their bigger brothers,
the standard 2" x 2" and 1.6" x 2" devices,
commonly used in the industry.
By combining a high-frequency (340kHz),
high-efficiency (to 89%), synchronous-rectifier
topology with the newest components and
time-tested, fully automated, SMT-on-pcb
construction, these UEP Models are able
to bring you 15-30W in the standard 2" x 1"
package from which most competitors can
only get 5-10W. All UEP’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 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
Choice of 3 input ranges:
10-18V, 18-36V, 36-75V
Models Include
3.3V @ 4.5A or 6A
5V @ 3.5A or 6A
15V @ 1.2A
12V @ 1.4A
Guaranteed efficiencies to 89%
15-30 Watts in 1" x 2" package
340kHz synchronous-rectifier topologies
–40 to +60/70°C ambient w/o derating
Fully isolated (1500Vdc); I/O protected
Trim and On/Off Control
UL1950/EN60950 certified
CE mark (75VIN models)
n
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n
n
n
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limiting, and continuous short-circuit protection.
Standard features also include on/off control
and output-trim. All models are certified to
IEC950, UL1950 and EN60950 safety require-
ments for OPERATIONAL insulation. “D48”
models (36-75V inputs) are CE marked.
UEP Series DC/DC’s are packaged
in low-cost, light-weight, diallyl phthalate
(UL94V-0 rated) plastic packages with stand-
offs. EMC compliance is achieved via a low-
noise design rather than through expensive
metal shielding.
For full details go to
www.murata-ps.com/rohs
+INPUT
(1)
+OUTPUT
(4)
SWITCH
CONTROL
➀
–OUTPUT
(5)
➀
–INPUT
(2)
PWM
CONTROLLER
UVLO & OVLO
COMPARATORS
ON/OFF
CONTROL
(3)
OPTO
ISOLATION
REFERENCE &
ERROR AMP
TRIM
(6)
➀
3.3V and 5V-output models use the synchronous-rectifier configuration shown above.
12V and 15V-output models employ a standard, diode-rectification architecture.
Figure 1. Simplified Schematic
Typical topology is shown.
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email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UEP Models.A02 Page 1 of 11
Single Output UEP Models
Ultra-High Density, 2" x 1", 1.2-6 Amp,15-30 Watt DC/DC’s
Performance Specifications and Ordering Guide
➀
Output
Model
UEP-3.3/4500-D12
UEP-3.3/4500-D24
UEP-3.3/4500-D48
UEP-3.3/6000-D48
UEP-5/3500-D12
UEP-5/3500-D24
UEP-5/3500-D48
UEP-5/6000-D48
UEP-12/1400-D12
UEP-12/1400-D24
UEP-12/1400-D48
UEP-15/1200-D12
UEP-15/1200-D24
V
out
(Volts)
3.3
3.3
3.3
3.3
5
5
5
5
12
12
12
15
15
I
out
(mA)
4500
4500
4500
6000
3500
3500
3500
6000
1400
1400
1400
1200
1200
R/N (mVp-p)
Typ.
85
85
85
85
85
85
85
85
85
85
85
85
85
Max.
100
100
100
100
100
100
100
100
100
100
100
100
100
Regulation (Max.)
Line
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
Load
➂
±0.5%
±0.5%
±0.5%
±0.3%
±0.5%
±0.5%
±0.5%
±0.3%
±0.5%
±0.5%
±0.5%
±0.5%
±0.5%
V
in
Nom.
(Volts)
12
24
48
48
12
24
48
48
12
24
48
12
24
Input
Range
(Volts)
10-18
18-36
36-75
36-75
10-18
18-36
36-75
36-75
10-18
18-36
36-75
10-18
18-36
V
out
(mA)
80/1490
50/730
35/360
40/470
120/1760
65/850
40/430
35/710
60/1650
45/800
20/400
60/1760
45/860
Efficiency
Min.
83.5%
85.5%
85.5%
86%
84%
86%
86%
88%
82.5%
85%
85%
82.5%
85%
Typ.
84.5%
87.5%
87.5%
88%
86%
88%
88%
91%
85%
87%
87%
85%
87%
Package
(Case,
Pinout)
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
C15, P21
➀
Typical at TA = +25°C under nominal line voltage and full-load conditions, unless otherwise noted.
➁
Ripple/Noise (R/N) is tested/specifed over a 20MHz bandwidth. All models are specified with no
external input/output capacitors.
➂
Load regulation is specified over no load to 100% load conditions for 3.3 and 5V
out
models, 25mA to
100% load conditions for 12 and 15 V
out
models.
➃
Nominal line voltage, no-load/full-load conditions.
PART NUMBER STRUCTURE
MECHANICAL SPECIFICATIONS
2.00
(50.80)
PLASTIC CASE
0.49
(12.45)
U EP
-
3.3
/
4500
-
D48 N
-
C
Output Configuration:
U
= Unipolar
External Pinout
ROHS-6
Hazardous
Substance
Compliance
N Suffix
Available for 12V
out
and 15V
out
Models
Input Voltage Range:
D12
= 10-18 Volts (12V nominal)
D24
= 18-36 Volts (24V nominal)
D48
= 36-75 Volts (48V nominal)
Maximum Output Current
in mA
1.00
(25.40)
Case C15
STANDOFF
0.020 (0.51)
0.20 MIN
(5.08)
0.040 ±0.001 DIA.
(1.016 ±0.025)
1.800
(45.72)
1
2
0.600
(15.24)
3
0.10
(2.54)
Nominal Output Voltage:
3.3, 5, 12 or 15 Volts
4
5
0.400
(10.16)
0.800
(20.32)
0.400
(10.16)
6
0.100
(2.54)
BOTTOM VIEW
0.10
(2.54)
DIMENSIONS ARE IN INCHES (MM)
Optional Functions
UEP converters are designed such that the 12 and 15V
out
models can be
configured for either positive logic on/off control (no suffix) or negative logic
(“N” suffix). 3.3 and 5V
out
models are available with positive logic only (no suffix).
No Suffix
On/Off Control function (positive polarity) on pin 3
N
On/Off Control function (negative polarity) on pin 3.
(12V and 15V models only.)
I/O Connections
Pin
1
2
3
4
5
6
Function P21
+Input
–Input
On/Off Control
+Output
–Output
Trim
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MDC_UEP Models.A02 Page 2 of 11
Single Output UEP Models
Ultra-High Density, 2" x 1", 1.2-6 Amp,15-30 Watt DC/DC’s
Performance/Functional Specifications
Typical @ T
A
= +25°C under nominal line voltage and full-load conditions, unless noted.
➀➁
Input
Input Voltage Range:
D12 Models
D24 Models
D48 Models
Overvoltage Shutdown:
D12 Models
D24 Models
D48 Models
➆
Start-Up Threshold:
➂
D12 Models
D24 Models
D48 Models
Undervoltage Shutdown:
➂
D12 Models
D24 Models
D48 Models
Input Current:
Normal Operating Conditions
Standby Mode (Off, OV, UV)
Input Filter Type
Reverse-Polarity Protection
On/Off Control
(Optional, Pin 3):
➃
D12, D24, & D48 Models
D12N, D24N, & D48N Models
10-18 Volts (12V nominal)
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
18.5-21 Volts (20V typical)
37-40 Volts (38V typical)
77-81 Volts (78.5V typical)
9.3-9.8 Volts (9.6V typical)
16.5-18 Volts (17V typical)
34-36 Volts (35V typical)
7-8.5 Volts (8V typical)
15.5-17.5 Volts (16.5V typical)
32.5-35.5 Volts (34.5V typical)
See Ordering Guide
5mA
Pi
Brief duration, 10A maximum
On = open or 13V - +V
IN
, I
IN
= 50µA max.
Off = 0-0.8V, I
IN
= 1mA max.
On = 0-0.5V, I
IN
= 50µA max.
Off = open or 2.4-10V, I
IN
= 3.7mA max.
Switching Frequency
6A Models
1.2A-4.5A Models
Dynamic Characteristics (continued)
400kHz (±20kHz)
340kHz (±40kHz)
Environmental
Operating Temperature
(Ambient):
Without Derating
➅
With Derating
Case Temperature:
Maximum Allowable
Storage Temperature
Dimensions
Shielding
Case Material
Pin Material
Weight
➀
➁
➂
➃
–40 to +60/70°C
to +100°C (See Derating Curves)
+100°C
–40 to +105°C
Physical
2" x 1" x 0.51" (51 x 25 x 12.95mm)
None
Diallyl phthalate, (UL94V-0 rated)
Gold-plated copper alloy with nickel underplate
1.4 ounces (39.7 grams)
Output
V
OUT
Accuracy
(50% load):
Minimum Loading:
➁
3.3V/5V Outputs
12V/15V Outputs
Ripple/Noise
(20MHz BW)
➀ ➄
Line/Load Regulation
Efficiency
Isolation Voltage:
Input-to-Output
Isolation Capacitance
Isolation Resistance
Current Limit Inception:
➂
6A Models
4.5A Models
3.5A Models
1.4A Models
1.2A Models
Short Circuit:
➂
Average Current
V
OUT
Trim Range
➂
Overvoltage Protection
➂
Temperature Coefficient
Transient Response
(50-100% load)
Start-Up Time:
➂
V
IN
to V
OUT
On/Off to V
OUT
±1.5%, maximum
No load
25mA
See Ordering Guide
See Ordering Guide
See Ordering Guide
1500Vdc minimum
470pF
100MW
7-8 Amps
5.5-7 Amps (6.25 Amps typ.)
5.5-6 Amps (5.25 Amps typ.)
1.9-2.7 Amps (2.3 Amps typ.)
1.5-2.1 Amps (1.8 Amps typ.)
Hiccup, indefinite
3 Amps maximum
±5%
Zener/transorb clamp, magnetic feedback
±0.02% per °C.Dynamic Characteristics
All models are specified with no external input/output capacitors.
See Minimum Output Loading Requirements under Technical Notes.
See Technical Notes for details.
The On/Off Control is designed to be driven with open-collector logic or the application of appro-
priate 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.
➄
Output noise may be further reduced with the addition of external output capacitors. See Technical
Notes.
➅
Operating temperature range without derating is model and input-voltage dependent. See
Temperature Derating.
➆
UEP-3.3/600-D48 and UEP-5/6000-D48 do not have overvoltage shutdown. See Absolute
Maximum Ratings for allowable input voltages.
Absolute Maximum Ratings
Input Voltage:
Continuous:
D12 Models
D24 Models
D48 Models
Transient (100msec):
D12 Models
D24 Models
D48 Models
Input Reverse-Polarity Protection
Output Overvoltage Protection:
3.3V Outputs
5V/12V/15V Outputs
Output Current
Case Temperature
Storage Temperature
Lead Temperature
(soldering, 10 sec.)
22 Volts
44 Volts
88 Volts
22 Volts
44 Volts
88 Volts
Current must be <10 Amps. Brief duration
only. Fusing recommended.
4.5 Volts, unlimited duration
6.8/15/18 Volts, unlimited duration
Hiccup. Devices can withstand sustained
output short circuits without damage.
+100°C
–40 to +105°C
+300°C
Dynamic Characteristics
300µsec max. to ±1.5% of final value
50msec
30msec
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.
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MDC_UEP Models.A02 Page 3 of 11
Single Output UEP Models
Ultra-High Density, 2" x 1", 1.2-6 Amp,15-30 Watt DC/DC’s
TECHNICAL NOTES
Floating Outputs
Since these are isolated DC/DC converters, their outputs are “floating.” Design-
ers will usually use the –Output (pin 5) 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
3.3 and 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, diode-rectification architecture and require 25mA
loading to achieve their listed regulation specs. Operation under 25mA load
conditions will not damage the 12/15V devices; however they may not meet all
listed specifications.
Filtering and Noise Reduction
All UEP Series DC/DC Converters achieve their rated ripple and noise speci-
fications with no external input/output capacitors. In critical applications,
input/output noise may be further reduced by installing 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.
The most effective combination of external I/O capacitors will be a function
of load and layout conditions. Our Applications Engineers can recommend
potential solutions and 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.
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 UEP Series DC/DC Converters, you should use
slow-blow type fuses with values no greater than the following.
VIN Range
D12 Models
D24 Models
D48 Models (1.2-4.5A)
D48 Models (6A)
Fuse Value
3 Amps
2 Amps
1 Amp
2 Amp
1
+OUTPUT
4
+INPUT
2
–INPUT
TRIM
6
20kΩ
5-22
Turns
LOAD
3
ON/OFF
CONTROL
–OUTPUT
5
Figure 2. Trim Connections Using A Trim Pot
1
+INPUT
+OUTPUT
4
R
TRIM DOWN
2
–INPUT
TRIM
6
LOAD
3
ON/OFF
CONTROL
–OUTPUT
5
Figure 3. Trim Connections To Decrease Output Voltage Using Fixed Resistors
1
+INPUT
+OUTPUT
4
2
–INPUT
TRIM
6
LOAD
R
TRIM UP
3
ON/OFF
CONTROL
–OUTPUT
5
Figure 4. Trim Connections To Increase Output Voltage Using Fixed Resistors
Model
UEP-3.3/4500-D12
UEP-3.3/4500-D24
UEP-3.3/4500-D48
UEP-3.3/6000-D48
UEP-5/3500-D12
UEP-5/3500-D24
UEP-5/3500-D48
UEP-5/6000-D48
UEP-12/1400-D12
UEP-12/1400-D24
UEP-12/1400-D48
Trim Equation
R
T
DOWN
(kΩ) =
R
T
UP
(kΩ) =
R
T
DOWN
(kΩ) =
R
T
UP
(kΩ) =
R
T
DOWN
(kΩ) =
R
T
UP
(kΩ) =
R
T
DOWN
(kΩ) =
R
T
UP
(kΩ) =
2.49(V
O
–
1.27)
3.3
–
V
O
3.16
V
O
–
3.3
–16.9
–16.9
2.49(V
O
–
2.527)
–15
5
–
V
O
6.292
V
O
–
5
–15
Trimming Output Voltages
These converters have a trim capability (pin 6) 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 depend-
ing 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 6) to the +Output (pin 4), see
Figure 3, will decrease the output voltage. A resistor connected from the Trim
(pin 6) to –Output (pin 5) will increase the output voltage.
Trim adjustment greater than 5% can have an adverse effect on the converter's
performance and is not recommended.
6.34(V
O
–
5.714)
–49.9
12
–
V
O
36.23
V
O
–
12
–49.9
UEP-15/1200-D12
UEP-15/1200-D24
UEP-15/1200-D48
7.87(V
O
–
7.136)
–63.4
15
–
V
O
56.16
V
O
–
15
–63.4
Accuracy of adjustment is subject to tolerances of resistor values and factory-
adjusted output accuracy. V
o
= desired output voltage.
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
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MDC_UEP Models.A02 Page 4 of 11
Single Output UEP Models
Ultra-High Density, 2" x 1", 1.2-6 Amp,15-30 Watt DC/DC’s
Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold
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
"D48" models). Once operating, devices will not turn off until the input voltage
drops below the Undervoltage Shutdown limit (34V for "D48" models). Subse-
quent re-start will not occur until the input is brought back up to the Start-Up
Threshold. This built in hysteresis prevents any unstable on/off situations from
occurring at a single input voltage.
Input voltages exceeding the input overvoltage shutdown specification listed in
the Performance/Functional Specifications will cause the device to shutdown. A
built-in hysteresis of 0.6 to 1.6 Volts for all models will not allow the converter
to restart until the input voltage is sufficiently reduced.
The two 6 Amp models do not feature overvoltage shutdown and withstand
surges to 100V without shutting down. For custom overvoltage protection,
contact DATEL.
Input Reverse-Polarity Protection
If the input-voltage polarity is accidentally reversed, an internal diode will
become forward biased and likely draw excessive current from the power
source. If the source is not current limited (<10A) nor the circuit appropriately
fused, it could cause permanent damage to the converter.
On/Off Control
The input-side, remote On/Off Control function (pin 3) can be ordered to oper-
ate with either polarity (negative polarity available for 12 and 15 Volt models
only). Positive-polarity devices (standard, no part-number suffix) are enabled
when pin 3 is left open or is pulled high (+13V to V
IN
applied with respect to
–Input, pin 2, (see Figure 2). Positive-polarity devices are disabled when pin 3
is pulled low (0-0.8V with respect to –Input). Negative-polarity devices are off
when pin 3 is open or pulled high (+2.4V to +10V), and on when pin 3 is pulled
low (0-0.5V). See Figure 3.
1
+INPUT
3
ON/OFF
CONTROL
2
–INPUT
Figure 3. Driving the Negative Polarity On/Off Control Pin
Dynamic control of the remote on/off function is best accomplished with a
mechanical relay or an open-collector/open-drain drive circuit (optically iso-
lated if appropriate). The drive circuit should be able to sink appropriate current
(see Performance Specs) when activated and withstand appropriate voltage
when deactivated.
Applying an external voltage to pin 3 when no input power is applied to the
converter can cause permanent damage to the converter.
Start-Up Time
The V
IN
to V
OUT
start-up time is the interval of time where the input voltage
crosses the turn-on threshold point, and the fully loaded output voltage enters
and remains within its specified accuracy band. Actual measured times will
vary with input source impedance, external input/output capacitance, and load.
The UEP Series implements a soft start circuit that limits the duty cycle of the
PWM controller at power up, thereby limiting the Input Inrush current.
The On/Off Control to V
OUT
start-up time assumes the converter has its nominal
input voltage applied but is turned off via the On/Off Control pin. The specifica-
tion 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. Similar to the V
IN
to V
OUT
start-up, the On/Off Control to V
OUT
start-up time is also governed by the internal soft start circuitry and external
load capacitance.
Current Limiting
When output increases to 120% to 190% of the rated output current, the DC/DC
converter will go into a current limiting mode. In this condition the output
voltage will decrease proportionately with increases in output current, thereby
maintaining a somewhat constant power dissipation. This is commonly
referred to as power limiting. Current limit inception is defined as the point
where the full-power output voltage falls below the specified tolerance. See
Performance/Functional Specifications. If the load current being drawn from
the converter is significant enough, the unit will go into a short circuit condi-
tion. See “Short Circuit Condition.”
1
+INPUT
200k
13V CIRCUIT
3
ON/OFF
CONTROL
5V CIRCUIT
2
–INPUT
Figure 2. Driving the Positive Polarity On/Off Control Pin
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MDC_UEP Models.A02 Page 5 of 11
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