Datasheet

The UWQ series offers high output current (up to
17 Amps) in an industry standard “quarter brick”
package requiring no heat sink for most applica-
tions. The UWQ series delivers fi xed DC output
voltages up to 204 Watts (12V @17A) for printed
circuit board mounting. Wide range inputs of 18
to 75 Volts DC (48 Volts nominal) are ideal for
datacom and telecom systems.
Advanced automated surface mount assembly
and planar magnetics deliver galvanic isolation
rated at 2250 Vdc for basic insulation. To power
digital systems, the outputs offer fast settling to
current steps and tolerance of higher capacitive
loads. Excellent ripple and noise specifi cations as-
sure compatibility to CPU’s, ASIC’s, programmable
logic and FPGAs. No minimum load is required.
For systems needing controlled startup/shutdown,
an external remote On/Off control may use either
positive or negative logic.
A wealth of self-protection features include
input undervoltage lockout and overtemperature
shutdown using an on-board temperature sensor;
overcurrent protection using the “hiccup” auto-
restart technique, provides indefi nite short-circuit
protection, along with output OVP. The synchronous
rectifi er topology offers high effi ciency for minimal
heat generation and “no heat sink” operation. The
UWQ series is certifi ed to safety standards UL/
EN/IEC/CSA 60950-1, 2nd edition. It meets RFI/
EMI conducted/radiated emission compliance to
EN55022, CISPR22 with an external fi lter.
PRODUCT OVERVIEW
APPLICATIONS
Embedded systems, datacom and telecom
installations, wireless base stations
Disk farms, data centers and cellular repeater sites
Remote sensor systems, dedicated controllers
Instrumentation systems, R&D platforms, auto-
mated test fi xtures
Data concentrators, voice forwarding and
speech processing systems
FEATURES
Fixed DC outputs, 12V @17A
Industry standard quarter brick 2.3 x 1.45 x
0.46 open frame package
Wide range 18 to 75 Vdc input voltages with
2250 Volt Basic isolation
Remote ON/Off enable control
DOSA-compatible pinouts and form factor
High effi ciency synchronous rectifi er topology
Stable no-load operation
Monotonic startup into pre-bias output condition
Certifi ed to UL/EN 60950-1, CSA-C22.2 No.
60950-1, 2nd edition safety approvals
Extensive self-protection, OVP, input undervolt-
age, current limiting and thermal shutdown
F1
External
DC
Power
Source
Reference and
Error Amplifier
-Vout (4)
+Vout (8)
On/Off
Control
(2)
-Vin (3)
Open = On
+Vin (1)
logic)
Controller
and Power
Barrier
Figure 1. Connection Diagram
Typical topology is shown. Murata Power Solutions recommends an external fuse.
UWQ-12/17-Q48 Series
Wide Input, Isolated DOSA Quarter Brick DC/DC Converters
MDC_UWQ-12/17-Q48 Series.A06 Page 1 of 17
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Typical unit
Typical unit

Summary of content (17 pages)