MURATA UEI User Manual

UEI Series

GATE

DRIVE

OPTO

ISOLATION

Control

Reference, trim &

Error Amplifier

+V

IN

+V

OUT

–V

OUT

–V

IN

On/Off

Control

TRIM

–SENSE

+SENSE

ISOLATION

BARRIER

50-60W Isolated Wide-Range DC/DC Converters

Featuring a full 50-60 Watt output in 3.2 square inches of board
area, the UEI series isolated DC/DC converter family offers
efficient regulated DC power for printed circuit board mounting.

Typical unit

FEATURES

n

Small footprint DC/DC converter, ideal for high
current applications

n

Industry standard 1.55" x 2" x 0.4" open frame
package and pinout

n

Wide range input voltages 9-36 and 18-75Vdc

n

Double lead-free assembly and attachment
for RoHS standards

n

2250V Basic isolation (48V models)

n

Up to 50-60W total output power with
overtemperature shutdown

n

High efficiency synchronous rectifier forward
topology

n

Stable no-lead operation with no required
external components

n

Full power –40 to +70°C temperature range

n

UL60950-1, CSA-C22.2 No. 234, EN60950-1
safety approvals

n

Extensive self-protection shut down features

n

RoHS compliant

PRODUCT OVERVIEW

Wide range 4:1 inputs on the 1.55" x 2"x 0.4"
converter are either 9 to 36 Volts DC (Q12
models) or 18 to 75 Volts DC (Q48 models), ideal
for battery-powered and telecom equipment.
Fixed output voltages from 3.3 VDC to 15 VDC are
regulated to within ±0.05% and may be trimmed
within ±10% of nominal output. Applications
include small instruments, computer-based sys­tems, data communications equipment, remote
sensor systems, vehicle and portable electronics.

Full magnetic and optical isolation includes
Basic protection up to 2250 Volts DC. For con­nection to digital systems, the outputs offer fast
settling to current step loads and tolerance of
higher capacitive loads. Excellent ripple and
noise specifications assure compatibility to
circuits using CPU’s, ASIC’s, programmable logic
and FPGA’s. No minimum load is required. For
systems requiring controlled startup/shutdown,
an external remote On/Off control may use a

SIMPLIFIED SCHEMATIC

switch, transistor or digital logic. Remote Sense
inputs compensate for resistive line drops at high
currents.

A wealth of self-protection features avoid both
converter and external circuit problems. These
include input undervoltage lockout, input over­voltage and overtemperature shutdown. The out­puts current limit using the “hiccup” autorestart
technique and the outputs may be short-circuited
indefinitely. Additional features include output
overvoltage and reverse conduction elimination.

The synchronous rectifier forward topology
offers high efficiency for minimal heat buildup
and “no fan” operation. The open frame design
is also available under special quantity order
with an encapsulation shell and thermally­conductive potting compound. This option offers
additional cooling in low-airflow, high tempera­ture applications.

Typical topology is shown.

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com Technical enquiries email: [e-mail], tel: [phone]

MDC_UEI Series 50-60W.B16 Page 1 of 10

UEI Series

50-60W Isolated Wide-Range DC/DC Converters



PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE

o u t

V

(V)

Root Model

UEI-3.3/15-Q12PR-C 3.3 15 49.5 15 30 ±0.05% ±0.06% 24 9-36 130 2.33 86.8% 88.5% 1.55x1.95x0.375 P52

UEI-3.3/18-Q48NR-C 3.3 18 59.4 60 125 ±0.075% ±0.2% 48 18-75 130 1.38 87% 89.5% 1.55x1.95x0.375 P52

UEI-5/10-Q12PR-C 5 10 50 35 50 ±0.1% ±0.1% 24 9-36 130 2.31 89% 90% 1.55x1.95x0.375 P52

UEI-5/12-Q48NR-C 5 12 60 70 100 ±0.1% ±0.15% 48 18-75 130 1.37 89.5% 91% 1.55x1.95x0.375 P52

UEI-12/4.2-Q12P-C 12 4.2 50.4

UEI-12/5-Q48N-C 12 5 60

UEI-15/3.3-Q12P-C 15 3.3 49.5

UEI-15/4-Q48N-C 15 4 60



Power R/N (mVp-p) Regulation (Max.)

Io u t

(A)

(W) Typ. Max. Line Load

Output Input

V

IN

Range

Nom.

(V)

Please contact Murata Power Solutions for further information.

(V)

no load

in ,

I

(mA)

in , full

I

load (A)

Efficiency

Min. Typ.

Package

Case (inches) Pinout

 These are partial model numbers. Please refer to the full model number structure for complete

ordering part numbers.

 These specifications are preliminary. Contact MPS for availability.
 All specifications are typical at nominal line voltage and full load, +25 deg.C. unless otherwise

noted. See detailed specifications.

PART NUMBER STRUCTURE

/

UEI -

Nominal Output Voltage

Maximum Rated Output

Current in Amps

Input Voltage Range:

Q12 = 9-36V

Q48 = 18-75V

15

Q12-3.3

P R Z

On/Off Control Polarity:

P = Positive
N = Negative

Positive “P” polarity is standard for Q12 models and optional special
order for Q48 models. Negative “N” polarity is standard for Q48
models and optional special order for Q12 models.

 Output capacitors are 1 µF ceramic || 10 µF electrolytic. Input cap is 22 µF, low ESR.
 I/O caps are necessary for our test equipment and may not be needed for your application.
 Sense input is not included for 12 V

-

C

RoHS-6 compliance

Plastic Case:

Z = Plastic case, optional*
Blank = No plastic case

Sense Inputs (5 Vo u t and lower):

R = Sense included as standard (for 5 Vo u t

and lower models only. 12 Vo u t and higher
models do not offer the sense option.)

Blank = Sense not installed for 5 Vo u t and
lower models. Pins 6 and 9 omitted.

o u t and higher models. Sense is optional for 5 Vo u t and lower.

Note:

Not all model number combinations are
available. Contact Murata Power Solutions.

* Please contact Murata Power Solutions
for availability on teh plastic case models.

Technical enquiries email: [e-mail], tel: [phone]www.murata-ps.com

MDC_UEI Series 50-60W.B16 Page 2 of 10

MECHANICAL SPECIFICATIONS

0.64 MIN

‘H’

.025 MIN

CLEARANCE

.188

4.78

‘L’

‘W’

10.16

.400

2.54

.100

1.3

0.05

2.54

.500

.100

2

'W'

12.70

5.08

.400

.200

10.16

5.08

.200

.600

15.24

SIDE VIEW

BOTTOM VIEW

.040±.002 PINS

1.02±0.05

2

TOP VIEW

9

8

7

6

5

4

1

C

L

1

2

4

5

6

7

8

9

C

L

C

L

C

L

1.800

45.72

Third Angle Projection

Dimensions are in inches (mm shown for ref. only).

Components are shown for reference only.

Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚

UEI Series

50-60W Isolated Wide-Range DC/DC Converters

INPUT/OUTPUT CONNECTIONS, WITH SENSE

Pin Function P52 Pin Function P52

5 +Sense In
1 Positive Input 6 Positive Output
2 Negative Input No pin
3 No pin 7 Negative Output
4 On/Off Control In 8 –Sense In

9 Trim

Important: If sense inputs are not connected to a remote load, connect them
to their respective V

o u t pins at the converter.

PHYSICAL CHARACTERISTICS

Outline dimensions See mechanical specs

Pin material

Copper alloy with gold plate

over nickel underplate

Pin diameter 0.04" (1.016mm)

Pin Finish Gold plate

Weight TBD

Electromagnetic interference

FCC part 15, class B,

EN55022 (may need filter)

Flammability Rating UL 94V-0

Safety

IEC/EN/UL/cUL 60950-1,

CSA-C22.2 No. 60950-1

INPUT/OUTPUT CONNECTIONS, WITHOUT SENSE

Pin Function P51 Pin Function P51

5 No pin
1 Positive Input 6 Positive Output
2 Negative Input No pin
3 No pin 7 Negative Output
4 On/Off Control In 8 No pin

9 Trim

Pins 5 and 8 are omitted for models without sense inputs.

OUTLINE DIMENSIONS

Model Family “H” Height “W” Width “L” Length Case

“Z” Series Plastic Case 0.40 (10.2) 1.60 (40.6) 2.00 (50.8) C78
No Plastic Case (Open Frame) 0.38 (9.5) 1.55 (39.4) 1.95 (49.5) C74

Technical enquiries email: [e-mail], tel: [phone]www.murata-ps.com

MDC_UEI Series 50-60W.B16 Page 3 of 10