ULE Series
www.murata-ps.com
Isolated, High Density, Eighth-Brick
1.25–20 Amp, DC-DC Converters
Typical unit
The ULE Series "Eighth-Brick" DC-DC Converters are high-current isolated
power converters designed for use in high-density system boards.
FEATURES
PRODUCT OVERVIEW
Measuring just 0.89 × 2.22 × 0.36 inches (22.6
× 56.4 × 9.1mm), these open-frame, low-profile
E-bricks fit the industry-standard quarter-brick
footprint. Now you can “cut-and-paste” the layout
from your last Q-brick design to save time and save output overvoltage protection, current limiting,
44% board space (1.86 square inches versus 3.3)
in the process.
From a 9-18V, 18-36V or 36-75V input, ULEs
deliver 1.5 to 48 Volt outputs with current up to
20 Amps. They employ an interleaved, synchro-
nous-rectifier topology that exploits 100% of their
duty cycle. They simultaneously achieve high
efficiency, low noise, tight line/load regulation, and
quick step response.
in heavy-copper pc boards all contribute to
impressive thermal derating. The ULEs feature set
includes high isolation (2250Vdc, 48V models),
input pi filters, input undervoltage shutdown,
RoHS compliant
New 1/8-brick package, 1/4-brick pinout
in through-hole or SMT version
0.89 x 2.22 x 0.36 in. (22.6 x 56.4 x 9.1mm)
short-circuit protection, and thermal shutdown. The
standard footprint carries VOUT trim, on/off control,
and sense pins (sense pins are not available on
12V or higher models).
All ULE E-Bricks are certified to the BASIC-
insulation requirements of UL/EN/IEC60950-1,
2nd edition, and all “D48” models (36-75V input
ranges) carry the CE mark. Safety certifications,
EMC compliance testing and qualification testing
are available.
Output current: 1.25-20 Amps
Output voltages: 1.5V to 48V
Input voltage: 12V, 24V and 48V nominal
Interleaved, synchronous-rectifier
topology delivers:
Outstanding efficiency (to 94%)
Low noise
Stable no-load operation
No output reverse conduction
An open-frame design, high efficiency, low-on-
resistance FETs, and planar magnetics embedded
Excellent thermal performance
On/off control, trim and sense pins
Fully isolated (2250Vdc BASIC)
Fully I/O protected; Thermal shutdown
Certified to UL/IEC/EN 60950-1 and CAN/CSA
C22.2 No.60950-1, 2nd edition
Lead-free construction/attach
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
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