UEI15 Datasheet, PDF (1/5 Pages) Murata Power Solutions Inc. – Isolated Wide Input Range 15-Watt DC/DC Converters

This data sheet contains core information only. Please click here for the full data sheet.
www.murata-ps.com
UEI15 Series
Isolated Wide Input Range 15-Watt DC/DC Converters
Typical unit
FEATURES
„ Small footprint DC/DC converter, ideal for
high current applications
„ Industry standard 0.96" x 1.1" X 0.32" open
frame package and pinout
„ Wide range input voltages 9-36 and 18-75 Vdc
„ Assembly and attachment for RoHS standards
„ Isolation up to 2250 VDC (basic)
„ Up to 15 Watts or greater total output power
with overtemperature shutdown
„ High efficiency synchronous rectifier forward
topology
„ Stable operation with no required external
components
„ Usable -40 to 85°C temperature range (with
derating)
„ Meets UL 60950-1, CAN/CSA-C22.2 No. 60950-
1, IEC60950-1, EN60950-1 safety approvals
„ Extensive self-protection shut down features
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.
PRODUCT OVERVIEW
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 battery-
powered and telecom equipment. The industry-
standard pinout fits larger 1" x 2" converters. Fixed
output voltages from 3.3 VDC to 15 VDC are regu-
lated to within ±0.2% or less and may be trimmed
within ±10% of nominal output. Applications
include small instruments, area-limited microcon-
trollers, computer-based systems, data communi-
cations equipment, remote sensor systems, vehicle
and portable electronics.
The UEI 15W series includes full magnetic and
optical isolation up to 2250 Volts DC (basic insula-
tion). For connection to digital systems, the outputs
offer fast settling to current step loads and toler-
ance of higher capacitive loads. Excellent ripple
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, transis-
tor 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 overtem-
perature 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.
Contents of full data sheet
Page
Description, Photograph, Connection Diagram
1
Ordering Guide, Model Numbering
2
Mechanical Specifications, Input/Output Pinout
3
Detailed Electrical Specifications
6
Application Notes
8
Soldering Guidelines
11
Performance Data
12
SIMPLIFIED SCHEMATIC
+VOUT
+VIN
Ḥ
For full details go to
www.murata-ps.com/rohs
On/Off
Control
Control
−VIN
3.3V and 5VOUT models only.
www.murata-ps.com
GATE DRIVE
–VOUT
ISOLATION BARRIER
ISOLATION
Reference, Trim &
TRIM
Error Amplifier
Typical topology is shown.
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18 Sep 2009 MDC_UEI15W.B32_short Page 1 of 5