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UEI15_11 Datasheet, PDF (1/16 Pages) Murata Manufacturing Co., Ltd. – Isolated Wide Input Range 15-Watt DC/DC Converters | |||
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www.murata-ps.com
Typical unit
UEI15 Series
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 efï¬cient regulated DC power for printed
circuit board mounting.
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 efï¬ciency synchronous rectiï¬er forward
topology
 Stable operation with no required external
components
 Usable -40 to 85°C temperature range (with
derating)
 Certiï¬ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety ap-
provals, 2nd edition
 Extensive self-protection shut down features
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 ï¬ts 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 speciï¬cations assure compatibility to
circuits using CPUâs, ASICâs, programmable logic
and FPGAâs. 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 âhiccupâ autorestart technique and the outputs
may be short-circuited indeï¬nitely. Additional
features include output overvoltage and reverse
conduction elimination.
The high efï¬ciency offers minimal heat buildup
and âno fanâ operation.
+VOUT
+VIN
On/Off
Control
Control
GATE DRIVE
âVOUT
ISOLATION BARRIER
âVIN
ISOLATION
Reference, Trim &
TRIM
Error Ampliï¬er
Figure 1. Simpliï¬ed block diagramâ3.3V and 5VOUT models only. Typical topology is shown.
Ḥ
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
email: sales@murata-ps.com
14 Mar 2011 MDC_UEI15W.B42 Page 1 of 16
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