UHP28_2_12A Datasheet, PDF (1/9 Pages) Murata Manufacturing Co., Ltd. – Isolated, 12 Amp Half Brick, 48VIN/28.2VOUT DC/DC Converters

UHP-28.2/12-D48
Isolated, 12 Amp Half Brick, 48VIN/28.2VOUT DC/DC Converters
ORDERING GUIDE SUMMARY
Model
VOUT Range
UHP-28.2/12-D48
28.2V
IOUT Range
0-12A
VIN Range
36-75V
Ripple/Noise
100mVp-p
Efficiency
91.5%
Typical unit
INPUT CHARACTERISTICS
Parameter
Voltage Range
Current, full power
Undervoltage Shutdown
Short Circuit Current
Remote On/Off Control
Typ. @ 25°C, full load
36-75 Volts
5.77 Amps
32 Volts
200mA
0 to +VIN
Notes
48V nominal
VIN = 48V
VIN = 48V
Positive or negative logic
FEATURES
N Wide 36-75V input range
N 28.2V output @ 12 Amps. max.
N Very high efficiency of 91.5%
N Operates to +110°C baseplate w/derating
N Conduction-cooled baseplate, no fans
N Industry-standard mounting and pinout
N Remote sense, trim and On/Off control
N Isolated to 2250Vdc (Basic insulation)
N Multiple I/O protection features
N UL/EN60950-1 safety approvals, CE mark
N ETSI 300-019-2-4 surge, shock/vibration
DESCRIPTION
The UHP-28.2/12-D48 is especially designed for
unattended cellular and PCS base stations, remote
wide band RF amplifiers and wireless communi-
cation facilities. To avoid unreliable system fans,
the UHP-28.2/12-D48 can be operated using con-
duction cooling while attached to a housing wall
or system heat sink. No forced airflow is needed
up to +110°C baseplate temperature.
The UHP-28.2/12-D48's MTBF is 3 million hours
(+40°C GF) and ruggedization conforms to
ETSI 300-019-2-4. Multiple protection features
avoid damage to outside equipment and to the
converter itself. The converter will shut down on
sustained input undervoltage, output overcurrent,
output short circuit and overvoltage and thermal
shutdown. Overload currents less than a short
circuit limit the output current so that operation
OUTPUT CHARACTERISTICS
Parameter
Voltage
Current
Power Output
Accuracy
Ripple & Noise
Line and Load Regulation
Overcurrent Protection
Overtemperature Protection
Efficiency (minimum)
Efficiency (typical)
Typ. @ 25°C, full load
28.2 Volts ±10%
0 to 12 Amps
342 Watts max.
±1.25%
100mVp-p
±0.05%/±0.1%
30 Amps
+125°C
89.5%
91.5%
Notes
Trim range shown
No minimum load
Max. baseplate @ 342W = 80°C
20MHz bandwidth
With hiccup auto-restart
GENERAL SPECIFICATIONS
Parameter
Dynamic Load Response
Operating Temperature Range
Operating Temperature Range
Safety
Typ. @ 25°C, full load
100μsec
–40 to +110°C
–40 to +32°C
UL/IEC/EN 60950-1
Notes
50-75-50% step to ±1 of final value
With baseplate, see derating curve
Without baseplate
And CSA C22.2-No.234
MECHANICAL CHARACTERISTICS
With baseplate
2.30 x 2.40 x 0.502 inches (58.4 x 61.0 x 12.8 mm)
Without baseplate
2.30 x 2.40 x 0.452 inches (58.4 x 61.0 x 11.5 mm)
is not interrupted. Upon short circuit shutdown,
the converter will automatically attempt to restart
(“hiccup” mode) when the overload is removed.
The input will tolerate up to 100V overvoltage
spikes (100msec).
The UHP-28.2/12-D48 uses industry-standard
half-brick external outline dimensions, pinout and
mechanical mounting. The overall unit is designed
to be as “lead-free” as practical in construction
and method of attachment (no lead added in
assembly).
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
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