UWS Datasheet, PDF (1/25 Pages) Murata Power Solutions Inc. – Sixteenth-brick DOSA-Compatible, Wide Input Isolated DC/DC

www.murata-ps.com
UWS Series
Sixteenth-brick DOSA-Compatible,
Wide Input Isolated DC/DC Converters
FEATURES
„High efficiency synchronous rectifier forward
topology
„18-75 Volts DC wide input range with 3.3, 5 and
12 Volts for Output voltage
„Up to 54 Watts total output power with
overtemperature shutdown
„Tiny 1.31" x 0.91" x 0.36" open frame package
„Industry standard DOSA "brick" format
and pinout
„Extensive self-protection shut down features
„Small footprint DC/DC converter, ideal for high
current applications
„2250 Volt Basic input/output isolation (48V
models)
„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
Typical units
PRODUCT OVERVIEW
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-
brick” width (0.91 inches) while still retaining a
high power output and full 2250 Volt DC isolation.
The PC-board mount converter family accepts
18 to 75 Volts DC inputs and delivers fixed outputs
regulated to within ±0.125%. 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
FPGA’s. No minimum load is required. For systems
requiring controlled startup/shutdown, an external
remote On/Off control may use a switch, transistor
or digital logic.
Many self-protection features on the UWS series
avoid both converter and external circuit hazards.
These include input undervoltage lockout 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 rectifier forward topology yields
high efficiency for minimal heat buildup and “no
fan” operation.
F1
+Vin (1)
External
DC
Power
Source
On/Off
Control
(2)
Open = On
$MPTFE

0GG
1PTJUJWF

MPHJD
-Vin (3)
*TPMBUJPO
Barrier
Controller
and Power
5SBOTGFS
t
4XJUDIJOH
t
'JMUFST
t
$VSSFOU
4FOTF
Reference and
Error Amplifier
Figure 1. Connection Diagram
Typical topology is shown. Murata Power
Solutions recommends an external fuse.
Ḥ
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
+Vout (8)
4FOTF
 
4FOTF
 
Trim (6)
-Vout (4)
*Sense is included on the UWS-3.3/15-Q48
and UWS-5/10-Q48.
MDC_UWS Series.B02 Page 1 of 25