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UWE-100-120W Series
Wide Input, Isolated Eighth-Brick DC-DC Converters
The UWE Series "Eighth-Brick" DC-DC Converters are high-current isolated
power modules designed for use in high-density system boards.
Typical units
FEATURES
PRODUCT OVERVIEW
?
? Industry-standard through-hole eighth-brick
package with 2.3" x 0.9" x 0.39" outline
dimensions
?
? Wide input range of 18-75 Vdc
?
? Fixed outputs from 3.3, 5 and 12 Volts DC up to
120 Watts
?
? Synchronous recti?cation yields very high ef-
?ciency and low power dissipation
?
? Operating temperature range from -40°C to
+85?C with derating
Up
? ? to 2250 Volt DC isolation
?
?
? Outstanding thermal performance and derating
? Extensive self-protection, over temperature
and overload features with no output reverse
conduction
?
?
? On/Off control, trim and remote sense functions
? Certi ?ed to UL/EN/IEC 60950-1, CAN/CSA-C22.2
No. 60950-1, 2nd Edition, safety approvals and
EN55022/CISPR22 standards
?
? Pre-bias operation for startup protection
+V IN
With dimensions of only 2.3 x 0.9 x 0.39 inches,
the UWE series open frame DC-DC converters
deliver up to 120 Watts in an industry-standard
“eighth-brick” through-hole package. This format
can plug directly into quarter-brick pin outs.
Several standard ?xed-output voltages from 3.3
Vdc to 12 Vdc assure compatibility in embedded
equipment, CPU cards and instrument subsystems.
The extended 4-to-1 input voltage range (18-75V)
is ideal for battery-powered, telecom or portable
applications. Very high ef?ciency means no fans
or temperature deratings in many applications.
An optional baseplate extends operation into most
conceivable environments.
The synchronous recti?er design uses the maxi-
mum available duty cycle for greatest ef?ciency
and low power dissipation with no reverse output
conduction. These devices deliver low output noise,
SWITCH
tight line/load regulation, stable no-load operation
and fast load step response. All units are precision
assembled in a highly automated facility with ISO-
traceable manufacturing quality standards. Isolation
of 2250 Volts assures safety and fully differential
(?oating) operation for greatest application ?ex-
ibility. On-board Sense inputs compensate for line
voltage errors at high output currents. Outputs are
trimmable within ±10% of nominal voltage.
A wealth of protection features prevents damage
to both the converter and outside circuits. Inputs
are protected from under voltage and outputs fea-
ture short circuit protection, over current and over
temperature shut down. Overloads automatically
recover using the “hiccup” technique upon fault
removal. The UWE is certi?ed to standard safety
and EMI/RFI approvals. All units meet RoHS-6
hazardous materials compliance.
+V OUT
VOLTAGE
REGULATOR
DRIVE
+SENSE
–V IN
SS
PWM
?V OUT
?SENSE
ON/OFF
CONTROL
UV, OT
ISOLATION
REFERENCE
AMPLIFIER,
TRIM AND FEEDBACK
Typical topology is shown.
TRIM
　
Figure 1. Simpli?ed Block Diagram
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_UWE-100-120W.B07 Page 1 of 27
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