UEI Series
www.murata-ps.com
50-60W Isolated Wide-Range DC/DC Converters
Featuring a full 50-60 Watt output in 2.9 square inches of board area,
the UEI series isolated DC/DC converter family offers efficient
regulated DC power for printed circuit board mounting.
PRODUCT OVERVIEW
Typical unit
Wide range 4:1 inputs on the 1.50" x 1.90" x 0.38" FPGAs. No minimum load is required. For systems
converter are either 9 to 36 Volts DC (Q12 models) requiring controlled startup/shutdown, an external
FEATURES
or 18 to 75 Volts DC (Q48 models), ideal for battery- switch, transistor or digital logic may be used to acti-
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Small footprint DC/DC converter, ideal for high
powered and telecom equipment. Fixed output vate the remote On/Off control. Remote Sense inputs
current applications
voltages from 3.3 VDC to 15 VDC are regulated to compensate for resistive line drops at high currents.
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Industry standard 1.50 x 1.90 x 0.38 open frame
within 0.05% and may be trimmed within 10%
A wealth of self-protection features avoid both
package and pinout
of nominal output. Applications include small instru-
converter and external circuit problems. These
n ments, computer-based systems, data communica-
Wide range input voltages 9-36 and 18-75Vdc
include input undervoltage lockout, input overvolt-
tions equipment, remote sensor systems, vehicle
age and overtemperature shutdown. The outputs
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Assembly and attachment for RoHS standards
and portable electronics.
current limit using the hiccup autorestart technique
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Isolation up to 2250 VDC (basic)
The UEI 50-60W Series includes full magnetic and the outputs may be short-circuited indefinitely.
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Up to 50-60W total output power with
and optical isolation up to 2250 Volts DC (basic Additional features include output overvoltage and
overtemperature shutdown
insulation). For connection to digital systems, the reverse conduction elimination. The synchronous
n outputs offer fast settling to current step loads and rectifier forward topology offers high efficiency for
High efficiency synchronous rectifier forward
topology tolerance of higher capacitive loads. Excellent ripple minimal heat buildup and no fan operation.
and noise specifications assure compatibility to
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Stable no-load operation with no required
circuits using CPUs, ASICs, programmable logic and
external components
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40 to +85C temperature range with derating
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Certified to UL60950-1, CSA-C22.2 No. 234,
EN60950-1, 2nd Edition safety approvals
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Extensive self-protection shut down features
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RoHS-6 compliant
SIMPLIFIED SCHEMATIC
+VOUT
+VIN
GATE
DRIVE
VIN
VOUT
ISOLATION
BARRIER
+SENSE
On/Off
Control
Control
TRIM
OPTO Reference, trim &
SENSE
ISOLATION Error Amplifier
Typical topology is shown.
For full details go to
Figure 1. Simplified block diagram
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_UEI Series 50-60W.C12 Page 1 of 14UEI Series
50-60W Isolated Wide-Range DC/DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output Input
Package
Efficiency
Power R/N (mVp-p) Regulation (Max.)
VIN Iin ,
Vout Iout Range Iin , full
Nom. no load
Sense
(V) (A) (V) load (A)
Min. Typ.
(W) Typ. Max. Line Load Case Pinout
(V) (mA)
Root Model Input
UEI-3.3/15-Q12PR-C 3.3 15.0 49.5 15 30 0.05% 0.06% 24 9-36 130 2.33 86.8% 88.5% yes C74 P52
UEI-3.3/18-Q48NR-C 3.3 18.0 59.4 60 125 0.075% 0.2% 48 18-75 130 1.38 87% 89.5% yes C74 P52
UEI-5/10-Q12PR-C 5 10.0 50.0 35 50 0.1% 0.1% 24 9-36 130 2.31 89% 90% yes C74 P52
UEI-5/12-Q48NR-C 5 12.0 60.0 70 100 0.1% 0.15% 48 18-75 130 1.37 89.5% 91% yes C74 P52
UEI-12/4.2-Q12P-C 12 4.2 50.4 50 120 0.05% 0.05% 24 9-36 130 2.35 87.8% 89.5% no C74 P51
UEI-12/5-Q48N-C 12 5.0 60.0 40 70 0.2% 0.2% 48 18-75 130 1.42 87% 89.8% no C74 P51
UEI-15/3.3-Q12P-C 15 3.3 49.5 30 100 0.075% 0.05% 24 9-36 130 2.29 88.3% 90% no C74 P51
UEI-15/4-Q48N-C 15 4.0 60.0 35 60 0.075% 0.05% 48 18-75 50 1.40 87.5% 89.3% no C74 P51
These are partial model numbers. Please refer to the full model number structure for complete ordering Output capacitors are 1 F ceramic || 10 F electrolytic. Input cap is 22 F, low ESR.
part numbers. I/O caps are necessary for our test equipment and may not be needed for your application.
Sense input is not included for 12 Vout and higher models. Sense is optional for 5 Vout and lower.
All specifications are typical at nominal line voltage and full load, +25 deg.C. unless otherwise noted.
See detailed specifications.
* TO BE DISCONTINUED
* NOTE: the following models are TO BE DISCONTINUED:
UEI-12/5-Q48P-C UEI-15/4-Q48P-C UEI-3.3/18-Q48PR-C UEI-5/10-Q12NRH-C UEI-5/12-Q48N-C
UEI-15/3.3-Q12N-C UEI-3.3/18-Q48N-C UEI-5/10-Q12N-C UEI-5/10-Q12P-C UEI-5/12-Q48NR-C
UEI-15/3.3-Q12P-C UEI-3.3/18-Q48NR-C UEI-5/10-Q12NL2-C UEI-5/10-Q12PR-C UEI-5/12-Q48NRL1-C
UEI-3.3/18-Q48P-C UEI-15/4-Q48N-C UEI-5/10-Q12NR-C UEI-5/10-Q12PRL2-C UEI-5/12-Q48P-C
UEI-5/12-Q48PR-C
PART NUMBER STRUCTURE
UEI - 3.3 / 15 - Q12 P R H Lx - C
Unipolar Wide Input
RoHS-6 Hazardous Substance Compliance
(does not claim EU RoHS exemption 7blead in solder)
Nominal Output Voltage
Pin Length Option
Blank = standard pin length 0.25 in. (6.35 mm)
Maximum Rated Output
L1 = 0.110 in. (2.79 mm)
Current in Amps
L2 = 0.145 in. (3.68 mm)
Conformal Coating Option
Input Voltage Range:
Blank = No coating, standard
Q12 = 9-36V
H = Coating added, optional
Q48 = 18-75V
(built to order; contact Murata Power Solutions for MOQ and lead times.)*
On/Off Control Logic:
Sense Inputs (5 Vout and lower):
P = Positive
R = Sense included as standard (for 5 Vout and lower models only. 12 Vout and higher
N = Negative models do not offer the sense option.)
Positive P logic is standard for Q12 models and optional special
Blank = Sense not installed for 5 Vout and lower models. Pins 5 and 8 omitted.
order for Q48 models. Negative N logic is standard for Q48 models
and optional special order for Q12 models.
Note:
Some model number combinations may not be available. See website or contact your local Murata sales representative.
www.murata-ps.com/support
MDC_UEI Series 50-60W.C12 Page 2 of 14
* Last time buy date is 3/31/2021. Please click here to view product discontinuance notice