UQQ Series
www.murata-ps.com
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 fit the industry-
standard footprint.
Typical unit
FEATURES
PRODUCT OVERVIEW
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-rectifier topology that
exploits 100% of their duty cycle. They simultane-
ously achieve ultra-high efficiency, tight line/load
regulation, low noise, and quick step response.
The UQQ’s feature set includes high isolation,
input pi filters, 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.
ꢀStandard quarter-brick package/pinout in
through-hole version
ꢀLow cost; Low profile, 0.43”(10.92mm)
ꢀ9-36V or 18-75V wide range inputs
ꢀOutput current: 4 to 25 Amps
A state of the art, single-board, open-frame
design with reduced component count, high
efficiency, low-on-resistance FET’s, and planar
magnetics embedded in heavy-copper pc boards
all contribute to impressive thermal derating.
ꢀOutput voltages: 3.3, 5, 12, 15 or 24V
All UQQ quarter-bricks are designed with full
magnetic and optical isolation up to 2250 Volts DC
(basic insulation).
ꢀInterleaved synchronous-rectifier topology
Ultra high efficiency
No output reverse conduction
ꢀOutstanding thermal performance
ꢀOn/off control, trim & sense functions
ꢀFully isolated, up to 2250Vdc (48 VIN)
ꢀOutput overvoltage protection
ꢃ6/54
ꢀFully I/O protected; Thermal shutdown
ꢀCertified to UL/EN/IEC60950-1, 2nd Edition
safety approvals
ꢃ3%.3%
n6/54
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ꢀRoHS hazardous substance compliant
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Figure 1. Connection Diagram
Typical topology is shown.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
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