UWS Series
www.murata-ps.com
Sixteenth-brick DOSA-Compatible,
Wide Input Isolated DC-DC Converters
FEATURES
High efficiency synchronous flyback topology
18-75 Volts DC wide input range with 3.3, 5 and
12 Volts for Output voltage
Typical units
Up to 54 Watts total output power with
overtemperature shutdown
PRODUCT OVERVIEW
Tiny 1.30" x 0.90" x 0.36" open frame package
The world of “brick” DC-DC converters has seen
a steady size reduction. The UWS series makes
another dramatic size shrink down to a “sixteenth- remote On/Off control may use a switch, transistor
brick” width (0.90 inches) while still retaining a
high power output and full 2250 Volt DC isolation.
The PC-board mount converter family accepts
FPGA’
s. N
o mi
ni
mum l
oad i
s requi
red. For systems
requiring controlled startup/shutdown, an external
Industry standard DOSA "brick" format
and pinout
Extensive self-protection shut down features
or digital logic.
Many self-protection features on the UWS series
avoid both converter and external circuit hazards.
Small footprint DC-DC converter, ideal for high
current applications
18 to 75 Volts DC inputs and delivers fixed outputs These include input undervoltage lockout and
2250 Volt Basic input/output isolation (48V
models)
regulated to within 0.125ꢀ. The UWS converters
are ideal for datacom and telecom applications,
cell phone towers, data centers, server farms and
network repeaters.
UWS outputs may be trimmed while delivering
fast settling to current step loads and no adverse
effects from higher capacitive loads. Excellent ripple
and noise specifications assure compatibility to cir-
cuits using CPU’s, ASIC’s, programmable logic and
overtemperature shutdown. The output of these
DC-DC converters have 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 flyback topology yields high
efficiency for minimal heat buildup and “no fan”
operation.
Operating temperature range -40 to +85°C with
derating
Stable no-load operation with no required exter-
nal components
Certified to UL 60950-1, 2nd Edition, EN60950-1
safety approvals
*TPMBUJPO
F1
+Vin (1)
+Vout (8)
Barrier
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tꢀ'JMUFST
ꢁ4FOTFꢀꢂꢃꢄꢅ
External
DC
Power
Source
On/Off
Control
(2)
Controller
and Power
5SBOTGFS
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ꢆ4FOTFꢀꢂꢇꢄꢅ
Trim (6)
Open = On
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Reference and
Error Amplifier
-Vin (3)
-Vout (4)
Figure 1. Connection Diagram
*Sense is included on the UWS-3.3/15-Q48
and UWS-5/10-Q48.
Typical topology is shown. Murata Power
Solutions recommends an external fuse.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_UWS Series.D04 Page 1 of 25