UCQ_SERIES Datasheet, PDF (1/16 Pages) Murata Manufacturing Co., Ltd. – Low-Profile, Quarter Brick, 8.3-40 Amp Isolated DC/DC Converters

Single Output UCQ Models
Low-Profile, Quarter Brick, 8.3-40 Amp
Isolated DC/DC Converters
Typical units
FEATURES
Standard quarter-brick package/pinout
Low cost; Low profile, 0.4" (10.2mm)
24V or 48V nominal input
Outputs: 1.2V to 12V
Interleaved synchronous-rectifier topology
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Outstanding thermal performance
On/off control, trim & sense functions
Fully isolated, 2250Vdc (BASIC)
Output overvoltage protection
Fully I/O protected; Thermal shutdown
Designed to meet UL/EN/IEC60950-1
safety approvals
+VIN
(3)
PRODUCT OVERVIEW
For applications requiring improved electrical and
thermal performance at reduced cost, consider
DATEL’s new UCQ series “quarter brick” DC/DC
power converters. These compact units measure
just 1.45" x 2.3" x 0.4" (36.8 x 60.9 x 10.2 mm)
and fit the industry-standard footprint.
Available outputs range between 1.2V @ 30 Amps
to 12V @ 8.3 Amps and accept a wide input range.
The UCQ’s interleaved, synchronous-rectifier
topology offers high efficiency (up to 93%), tight
line and load regulation, low noise and fast step
response. A single-board optimized open-frame
design contributes to impressive thermal opera-
tion. UCQ’s will operate up to +70°C and 100 LFM
airflow with no derating.
The UCQ’s feature full isolation to 2250Vdc
meeting BASIC insulation requirements of
UL/EN/IEC 60950-1. Input filters reduce propa-
gated switching noise back to input sources. Also
included is a remote On/Off switch control (with
positive or negative polarity), output trim adjustable
over nominal and output sense functions to reduce
power lead losses. Extensive protection items
avoid damage from out of limit voltages, currents
and temperatures. Protection faults automatically
recover using the hiccup technique. Besides safety
testing to 60950-1, certifications for the UCQ
include application for EMC compliance (to FCC
class B), qualification testing.
+SENSE
(7)
+VOUT
(8)
–VIN
(1)
REMOTE
ON/OFF
CONTROL*
(2)
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For full details go to
www.murata-ps.com/rohs
SWITCH
CONTROL
–VOUT
(4)
PWM
CONTROLLER
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
OPTO
ISOLATION
REFERENCE &
ERROR AMP
–SENSE
(5)
VOUT
TRIM
(6)
* Can be ordered with positive (standard) or negative (optional) polarity.
Typical topology may vary between units.
Figure 1. Simplified Schematic
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
MDC_UCQ Models.B09 Page 1 of 16