HPQ-3.3 Datasheet, PDF (1/10 Pages) Murata Manufacturing Co., Ltd. – Isolated High Power Quarter Brick DC/DC Converters

www.murata-ps.com
HPQ-3.3/50-D48 Series
Isolated High Power Quarter Brick DC/DC Converters
Typical unit
FEATURES
„ 3.3 Volts DC fixed output up to 50 Amps
„ Industry standard quarter brick 2.3" x 1.45" x
0.40" 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 165 Watts total output power
„ High efficiency synchronous rectifier topology
„ Stable no-load operation with no required external
components
„ Operating temperature range -40 to +85° C. with
no heat sink required
„ Meets UL/EN 60950-1, CSA-C22.2 No. 60950-1,
safety approvals, 2nd Edition
„ Extensive self-protection, current limiting and shut
down features
PRODUCT OVERVIEW
Unique among quarter-brick DC/DC converters,
the HPQ-3.3/50-D48 series offers very high output
current (up to 50 Amps) in an industry standard
“quarter brick” package requiring no heat sink. The
HPQ-3.3/50-D48 series delivers up to 165 Watts
fixed voltage output for printed circuit board mount-
ing. Wide range inputs on the 2.3" x 1.45" x 0.40"
converter are 36 to 75 Volts DC (48 Volts nominal),
ideal for datacom and telecom systems. The fixed
output voltage is regulated to within ±1% and may
be trimmed within ±10% of nominal output.
Advanced automated surface mount assembly
and planar magnetics deliver full magnetic and
optical isolation with Basic protection up to 2250
Volts. To power digital systems, the outputs offer
fast settling to current steps and tolerance of
higher capacitive loads. Excellent ripple and noise
specifications assure compatibility to CPU’s, ASIC’s,
programmable logic and FPGA’s. No minimum load
is required. For systems needing controlled startup/
shutdown, an external remote On/Off control may
use either positive or negative polarity. Remote
Sense inputs compensate 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. Excessive overcurrents limit their
power using the “hiccup” autorestart technique
and the outputs may be short-circuited indefinitely.
Additional safety features include output overvolt-
age protection and reverse conduction elimination.
The synchronous rectifier topology offers high
efficiency for minimal heat buildup and “no heat
sink” operation. The HPQ-3.3/50-D48 series meets
safety certifications to UL/EN/IEC/CSA 60950-1,
2nd Edition and RFI/EMI conducted/radiated
emission compliance to EN55022-CISPR22 with
external filter.
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 fixtures
„ Data concentrators, voice forwarding and
speech processing systems
+SENSE
+VIN
(7)
(3)
+VOUT
(8)
–VIN
(1)
REMOTE
ON/OFF
CONTROL
(2)
Ḥ
For full details go to
www.murata-ps.com/rohs
SWITCH
CONTROL
PWM
CONTROLLER
PULSE
INPUT UNDERVOLTAGE, INPUT
TRANSFORMER ^{OVERVOLTAGE, AND OUTPUT}
OVERVOLTAGE COMPARATORS
OPTO
ISOLATION
REFERENCE &
ERROR AMP
Figure 1. Simplified Schematic
Typical topology is shown
−VOUT
(4)
−SENSE
(5)
VOUT TRIM
(6)
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21 Feb 2011 MDC_HPQ-3.3/50-D48 Series.A13 Page 1 of 10