UEI15 Series
www.murata-ps.com
Isolated Wide Input Range 15-Watt DC/DC Converters
Featuring a full 15 Watt or greater output in one square inch of board area, the UEI
series isolated DC/DC converter family offers efficient regulated DC power for printed
circuit board mounting.
Typical unit
FEATURES
PRODUCT OVERVIEW
footprint DC/DC converter, ideal for
Small
high current applications
Wide range 4:1 inputs on the 0.96" x 1.1" x 0.32"
converter are either 9 to 36 Volts DC (Q12 models)
or 18 to 75 Volts DC (Q48 models), ideal for batterypowered and telecom equipment. The industrystandard pinout fits larger 1" x 2" converters. Fixed
output voltages from 3.3 VDC to 15 VDC are regulated to within ±0.2% or less and may be trimmed
within ±10% of nominal output. Applications
include small instruments, area-limited microcontrollers, computer-based systems, data communications equipment, remote sensor systems, vehicle
and portable electronics.
The UEI 15W series includes full magnetic and
optical isolation up to 2250 Volts DC (basic insulation). For connection to digital systems, the outputs
offer fast settling to current step loads and tolerance of higher capacitive loads. Excellent ripple
Industry standard 0.96" x 1.1" X 0.32" open
frame package and pinout
ide range input voltages 9-36 and 18-75 Vdc
W
Assembly and attachment for RoHS standards
Isolation up to 2250 VDC (basic)
to 15 Watts or greater total output power
Up
with overtemperature shutdown
efficiency synchronous rectifier forward
High
topology
Stable operation with no required external
components
Usable -40 to 85°C temperature range (with
derating)
and noise specifications assure compatibility to
circuits using CPU’s, ASIC’s, programmable logic
and FPGA’s. For systems requiring controlled
startup/shutdown, an external switch, transistor or digital logic may be used to activate the
remote On/Off control.
A wealth of self-protection features avoid both
converter and external circuit problems. These
include input undervoltage lockout 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 high efficiency offers minimal heat buildup
and “no fan” operation.
ed to UL 60950-1, CAN/CSA-C22.2 No.
Certifi
60950-1, IEC60950-1, EN60950-1 safety approvals, 2nd edition
Extensive self-protection shut down features
+VOUT
+VIN
–VOUT
On/Off
Control
Control
GATE DRIVE
ISOLATION BARRIER
−VIN
ISOLATION
Figure 1. Simplified block diagram—3.3V and 5VOUT models only.
Reference, Trim &
Error Amplifier
TRIM
Typical topology is shown.
For full details go to
www.murata-ps.com/rohs
REG.-Nr. D806
www.murata-ps.com/support
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