BEI15 Series
www.murata-ps.com
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
Typical unit
FEATURES
PRODUCT OVERVIEW
Featuring a full 15 Watt output in one square
ꢀꢀ50 Volts DC (Q48 models) and ꢀ000 VDC (Q1ꢀ
models). For powering digital systems, the outputs
offer fast settling to step transients and will accept
higher capacitive loads. Excellent ripple and noise
specifications assure compatibility to noise-sus-
Small footprint DC/DC converter, ideal for
high current applications
inch of board area, the BEI-15 series isolated DC/
DC converter family offers efficient regulated DC
power for printed circuit board mounting. The
wide range 4:1 inputs on the 0.96" x 1.1" x 0.35"
Industry standard 0.96" x 1.1" X 0.35"
open frame package and pinout
Wide range input voltages 9-36 and
18-75 Vdc
(ꢀ4.4 x ꢀ7.9 x 8.9 mm) converter are either 9 to 36 ceptible circuits. For systems requiring controlled
Volts DC (Q1ꢀ models) or 18 to 75 Volts DC (Q48
models), ideal for battery-powered and telecom
equipment. The industry-standard pinout fits larger
1" x ꢀ" converters. Fixed output voltages of 5,
1ꢀ or 15 VDC are regulated to within 0.ꢀ5ꢁ.
Applications include small instruments, area-
limited microcontrollers, data communications
equipment, remote sensor systems, vehicle and
portable electronics.
startup/shutdown, an external remote On/Off
control may use a switch, transistor or digital logic.
A wealth of self-protection features avoid both
converter and external circuit faults. These include
input undervoltage lockout and overtemperature
shutdown. The outputs current limit using the
“hiccup” autorestart technique and the outputs
are short-circuit protected. Additional features
include output overvoltage and reverse conduction
elimination. The high efficiency offers minimal heat
buildup and “no fan” operation.
Bipolar 5V, 1ꢀV and 15V outputs
Up to 15 Watts or greater total output
power with overtemperature shutdown
Isolation up to ꢀꢀ50 VDC (basic), Q48 models
High efficiency synchronous rectifier
forward topology
Usable -40 to 85°C temperature range
(with derating)
The BEI-15 series includes full magnetic
and optical isolation with Basic protection up to
Assembly and attachment for RoHS standards
Extensive self-protection shut down
features
Meets UL 60950-1, CAN/CSA-
Cꢀꢀ.ꢀ No. 60950-1, IEC60950-1,
EN60950-1 safety approvals (ꢀnd Edition)
CONNECTION DIAGRAM
*TPMBUJPO
F1
+Vin (1)
Barrier
+Vout (6)
Common (5)
-Vout (4)
tꢀ4XJUDIJOH
tꢀ'JMUFST
External
DC
Power
Source
Controller
and
Power
On/Off
Control
(3)
tꢀ4XJUDIJOH
5SBOTGFS
tꢀ'JMUFST
Open = On
$MPTFEꢀꢁꢀ0GG
ꢂ1PTJUJWFꢀ
MPHJDꢃ
Reference and
Error Amplifier
-Vin (ꢀ)
Typical topology is shown.
Murata Power Solutions recommends a fuse at F1.
For full details go to
www.murata-ps.com/rohs
REG.-Nr. D806
www.murata-ps.com/support
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