UEI30_11 Datasheet, PDF (1/16 Pages) Murata Manufacturing Co., Ltd. – 30W Isolated Wide-Range DC/DC Converters

www.murata-ps.com
UEI30 Series
30W Isolated Wide-Range DC/DC Converters
Typical unit
FEATURES
„ Small footprint DC/DC converter, ideal for high
current applications
„ 0.92" x 1.92" x 0.35" open frame package
„ Wide range input voltages 9-36 and 18-75Vdc
„ Assembly and attachment for RoHS-6 hazard-
ous substance compliance
„ Isolation up to 2250 VDC (basic), Q48 models
„ Up to 30W total output power with
overtemperature shutdown
„ High efficiency synchronous rectifier forward
topology
„ Stable no-load operation with no required
external components
„ –40 to +85°C temperature range; see derating
„ Certified to UL60950-1, CSA-C22.2 No. 234,
EN60950-1 safety approvals
„ Extensive self-protection shut down features
„ RoHS-6 hazardous substance compliant
Featuring a full 30 Watt output in 1.8 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
Wide range 4:1 inputs on the 0.92" x 1.92" x 0.35"
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 tightly
regulated and may be trimmed within ±10%
of nominal output. Applications include small
instruments, computer-based systems, data com-
munications equipment, remote sensor systems,
vehicle and portable electronics.
The UEI 30W Series includes full magnetic
and optical isolation up to 2250 Volts DC (basic
insulation), Q48 models. 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 switch, transistor
or digital logic may be used to activate the remote
On/Off control. 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 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 synchronous rectifier forward topology
offers high efficiency for minimal heat buildup
and “no fan” operation.
Contents
Page
Description, Photograph, Connection Diagram
1
Ordering Guide, Model Numbering, Soldering Guidelines
2
Mechanical Specs, Input/Output Pinout
3
Detailed Electrical Specifications
4
Application Notes
6
Performance Data
11
Ḥ
For full details go to
www.murata-ps.com/rohs
SIMPLIFIED SCHEMATIC
+VIN
–VIN
On/Off
Control
Control
Typical topology is shown.
GATE
DRIVE
ISOLATION
BARRIER
OPTO
ISOLATION
Reference, trim &
Error Amplifier
+VOUT
–VOUT
TRIM
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03 Feb 2011 MDC_UEI Series 30W.A14 Page 1 of 16