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HPQ-12-25-D48 Datasheet, PDF (1/12 Pages) Murata Manufacturing Co., Ltd. – Isolated 300-Watt Quarter Brick DC/DC Converters | |||
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www.murata-ps.com
HPQ-12/25-D48 Series
Isolated 300-Watt Quarter Brick DC/DC Converters
Typical unit
FEATURES
 12 Volts DC ï¬xed output up to 25 Amps
 Industry standard quarter brick 2.3â x 1.45â x
0.44â open frame package
 Wide range 36 to 75 Vdc input voltages with
2250 Volt Basic isolation
 Double lead-free assembly and attachment for
RoHS standards
 Up to 300 Watts total output power
 High efï¬ciency (94.5%) synchronous rectiï¬er
topology
 Stable no-load operation with no required external
components
 Operating temperature range -40 to +85° C.
with no heat sink required
 Certiï¬ed to UL/EN 60950-1, CSA-C22.2 No.
60950-1, 2nd edition safety approvals
 Extensive self-protection, current limiting and
shut down features
 âXâ optional version omits trim and sense pins
PRODUCT OVERVIEW
The HPQ-12/25-D48 series offers high output
current (up to 25 Amps) in an industry standard
âquarter brickâ package requiring no heat sink for
most applications. The HPQ-12/25-D48 series de-
livers ï¬xed 12 Vdc output at 300 Watts for printed
circuit board mounting. Wide range inputs on the
2.3â x 1.45â x 0.44â converter are 36 to 75 Volts
DC (48 Volts nominal), ideal for datacom and telecom
systems. The ï¬xed output voltage is regulated to
within ±2%.
Advanced automated surface mount assembly
and planar magnetics deliver galvanic isolation
rated at 2250 Vdc for basic insulation. To power
digital systems, the outputs offer fast settling to
current steps and tolerance of higher capacitive
loads. Excellent ripple and noise speciï¬cations as-
sure compatibility to CPUâs, ASICâs, programmable
logic and FPGAâs. No minimum load is required. For
systems needing controlled startup/shutdown, an
external remote On/Off control may use either posi-
tive or negative polarity. Remote Sense inputs com-
pensate for resistive line drops at high currents.
A wealth of self-protection features avoid prob-
lems with both the converter and external circuits.
These include input undervoltage lockout and
overtemperature shutdown using an on-board tem-
perature sensor. Overcurrent protection using the
âhiccupâ autorestart technique provides indeï¬nite
short-circuit protection. Additional safety features
include output overvoltage protection and reverse
conduction elimination. The synchronous rectiï¬er to-
pology offers high efï¬ciency for minimal heat buildup
and âno heat sinkâ operation. The HPQ-12/25-D48
series is certiï¬ed to full safety standards UL/EN/IEC/
CSA 60950-1, 2nd edition and RFI/EMI conducted/
radiated emission compliance to EN55022, CISPR22
with external ï¬lter.
APPLICATIONS
 Embedded systems, datacom and telecom
installations
 Disk farms, data centers and cellular repeater sites
 Remote sensor systems, dedicated controllers
 Instrumentation systems, R&D platforms, auto-
mated test ï¬xtures
 Data concentrators, voice forwarding and
speech processing systems
F1
+Vin (3)
External
DC
Power
Source
On/Off
Control
(2)
Open = On
$MPTFE0GG
1PTJUJWF
polarity)
-Vin (1)
Ḥ
For full details go to
www.murata-ps.com/rohs
*TPMBUJPO
Barrier
Controller
and Power
5SBOTGFS
t4XJUDIJOH
t'JMUFST
t$VSSFOU4FOTF
Reference and
Error Ampliï¬er
Figure 1. Connection Diagram
Typical topology is shown. Murata Power Solutions
recommends an external fuse.
* âXâ option omits trim and sense pins.
+Vout (8)
4FOTF
4FOTF
Trim (6)
-Vout (4)
www.murata-ps.com
email: sales@murata-ps.com
09 Nov 2010 MDC_HPQ-12/25-D48 Series.A03 Page 1 of 12
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