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UQQ Series
Wide Input Range Single Output DC-DC Converters
For applications requiring wide range input, improved electrical and
thermal perfomance consider Murata Power Solutions’ new UQQ
Series “Quarter-Brick” DC-DC Converters. They measure just 1.45
x 2.22 x 0.43 inches (36.8 x 56.4 x 10.92mm) and ?t the industry-
standard footprint.
Typical unit
FEATURES
PRODUCT OVERVIEW
?
? Standard quarter-brick package/pinout in
through-hole version
?
?
?
? Low cost; Low pro?le, 0.43" (10.92mm)
? 9-36V or 18-75V wide range inputs
? Output current: 4 to 25 Amps
?
? Output voltages: 3.3, 5, 12, 15 or 24V
?
? Interleaved synchronous-recti?er topology
? Ultra high ef?ciency
?
?
? Outstanding thermal performance
? On/off control, trim & sense functions
From an 9-36V or 18-75V input, UQQ’s deliver
outputs of 3.3V, 5V,12V,15V, or 24V. They employ
an interleaved, synchronous-recti?er topology that
exploits 100% of their duty cycle. They simultane-
ously achieve ultra-high ef?ciency, tight line/load
regulation, low noise, and quick step response.
A state of the art, single-board, open-frame
design with reduced component count, high
ef?ciency, low-on-resistance FET’s, and planar
magnetics embedded in heavy-copper pc boards
all contribute to impressive thermal derating.
The UQQ’s feature set includes high isolation,
input pi ?lters, input undervoltage shutdown, output
overvoltage protection, current limiting, short-circuit
protection and thermal shutdown. The standard
footprint carries on/off control (positive or negative
polarity), output trim (+10/–20%) and output sense
functions.
All UQQ quarter-bricks are designed with full
magnetic and optical isolation up to 2250 Volts DC
(basic insulation).
?
?
? Fully isolated, up to 2250Vdc (48 V IN )
? Output overvoltage protection
?
? Fully I/O protected; Thermal shutdown
?
? Certi ?ed to UL/EN/IEC60950-1, 2nd Edition
safety approvals
?
? RoHS hazardous substance compliant
Figure 1. Connection Diagram
Typical topology is shown.
　
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_UQQ.D03 Page 1 of 18
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