Isolated High Power Quarter Brick DC/DC Converters
Typical unit
FEATURES
n
Volts DC fixed output up to 50 Amps
3.3
n
Industry standard quarter brick 2.3" x 1.45" x
0.39" open frame package
n
range 36 to 75 Vdc input voltages with 2250
Wide
Volt Basic isolation
n
Double lead-free assembly and attachment for RoHS
standards
n
to 165 Watts total output power
Up
n
efficiency synchronous rectifier topology
High
n
Stable no-load operation with no required external
components
n
Operating temperature range -40 to +85° C. with
no heat sink required
n
Designed to meet UL/EN 60950-1, CSA-C22.2 No.
60950-1, safety approvals
n
Extensive self-protection, current limiting and shut
down features
PRODUCT OVERVIEW
Unique among quarter-brick DC/DC converters, the
HPQ series offers very high output current (up to
50 Amps) in an industry standard “quarter brick”
package requiring no heat sink. The HPQ series
delivers up to 165 Watts fixed voltage output for
printed circuit board mounting. Wide range inputs
on the 2.3" x 1.45" x 0.39" converter are 36 to 75
Volts DC (48 Volts nominal), ideal for datacom and
telecom systems. The fixed output voltage is regu-
lated 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 effi-
ciency for minimal heat buildup and “no heat sink”
operation. The HPQ series is designed to meet full
safety certifications to UL/EN/IEC/CSA 60950-1 and
RFI/EMI conducted/radiated emission compliance
to FCC part 15 class B.
APPLICATIONS
n
Embedded systems, datacom and telecom
installations
n
farms, data centers and cellular repeater sites
Disk
n
Remote sensor systems, dedicated controllers
+V
IN
(3)
n
Instrumentation systems, R&D platforms, auto-
mated test fixtures
n
concentrators, voice forwarding and
Data
speech processing systems
+SENSE
(7)
+V
OUT
(8)
SWITCH
CONTROL
−V
OUT
(4)
–V
IN
(1)
PULSE
TRANSFORMER
PWM
CONTROLLER
OPTO
ISOLATION
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
REFERENCE &
ERROR AMP
−SENSE
(5)
V
OUT
TRIM
(6)
REMOTE
ON/OFF
CONTROL
(2)
Figure 1. Simplified Schematic
Typical topology is shown
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_HPQ Series.A05
Page 1 of 10
HPQ Series
Isolated High Power Quarter Brick DC/DC Converters
ORDERING GUIDE
➀
Output
I
out
V
out
(Amps, Power
(Volts) max.) (Watts) Typ.
3.3
50
165
50
R/N (mV
pk-pk)
Max.
Regulation
(Max.)
➁
Line
Input
I
in
full
V
in
Nom. Range
I
in
no
load
Load (Volts) (Volts) load (mA) (Amps)
48
36-75
80
3.82
Efficiency
Min.
88%
Typ.
90%
Dimensions
(inches)
1.45x2.3x0.39
Package
Dimensions
(mm)
36.8x58.4x9.9
Pinout
P32
Root Model
➀
HPQ-3.3/50-D48N-C
100 ±0.2% ±0.2%
➀
Please refer to the part number structure for additional ordering information and options.
➁
All specifications are at nominal line voltage and full load, +25 deg.C. unless otherwise noted. See detailed specifications. Output capacitors are 1 µF ceramic || 10 µF electrolytic with no input caps.These
caps are necessary for our test equipment and may not be needed for your application.
MECHANICAL SPECIFICATIONS
1.860 (47.2)
A
B
Dimensions are in inches (mm shown for ref. only).
Third Angle Projection
1.00
(25.4)
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only.
1.45
(36.8)
Screw length
must not
go through
baseplate.
#M3-THREAD X 0.15 DEEP
TYPICAL (4) PLACES
BASEPLATE
Optional baseplate
0.015 (0.4)
min. clearance
between highest
component and
pin shoulders
PINS 1-3, 5-7: 0.040 ±0.001 (1.016 ±0.025)
PINS 4 & 8: 0.060 ±0.001 (1.52 ±0.025)
0.50 (12.7)
With Baseplate
0.40 (10.2)
Without Baseplate
I/O Connections
(pin side view)
Pin
1
2
3
4
Function P32
Neg. Input
Remote On/Off Control
Pos. Input
Neg. Output
Pin
5
6
7
8
Function P32
Neg. Sense
Output Trim
Pos. Sense
Pos. Output
1
1.30
(33.0)
0.18
(4.6)
B
Component locations
are typical and may
vary between models.
2.30 (58.4)
2.00 (50.8)
A
A
Important!
Always
connect the sense pins. If they are not
connected to a remote load, wire each sense pin to its
respective voltage output at the converter pins.
2
3
4
5
6
7
8
B
0.600 (15.2)
4 EQ. SP.
@ 0.150 (3.8)
Optional mounting
holes, 4 places
2.15 (54.6)
BOTTOM VIEW
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_HPQ Series.A05
Page 2 of 10
HPQ Series
Isolated High Power Quarter Brick DC/DC Converters
PART NUMBER STRUCTURE
HPQ
-
3.3
/
50
-
D48 N B
Family
Series:
High Power
Quarter Brick
Nominal Output Voltage
Maximum Rated Output :
Current in Amps
Input Voltage Range:
D48 = 36-75 Volts (48V nominal)
H
-C
RoHS Hazardous Materials compliance
C
= RoHS-6 (no lead), standard
Y
= RoHS-5 (with lead), optional, special quantity order
Conformal coating (optional)
Blank
= no coating, standard
H
= Coating added, optional, special quantity order
Baseplate (optional)
Blank
= No baseplate, standard
B
= Baseplate installed, optional quantity order
On/Off Control Polarity
N
= Negative polarity, standard
P
= Positive polarity, optional
Note:
Some model combinations may not be
available. Contact Murata Power Solutions for
availability.
Performance and Functional Specifications
All specifications are typical unless noted. See Note 1.
Input
Input Voltage Range
Recommended External Fuse
Start-Up Voltage
Undervoltage Shutdown
Overvoltage Shutdown
Reflected (Back) Ripple Current (Note 2)
Internal Input Filter Type
Reverse Polarity Protection (Note 15)
Input Current:
Full Load Conditions
Inrush Transient
Shutdown Mode (Off, UV, OT)
Output Short Circuit
No Load, 3.3Vout
Low Line (Vin=Vmin, 3.3Vout)
Remote On/Off Control (Note 5)
Positive Logic (“P” suffix)
Negative Logic (“N” suffix)
Current
ON = +2.5 V. to +15 V. max. or open pin
OFF = 0 to +1 V. max. or ground pin
ON = -0.1 V. to +0.8 V. max. or ground pin
OFF = +2.5 V. to +15 V. max. or open pin
1 mA
See Ordering Guide.
0.05 A
2
Sec.
10 mA
50 mA
80 mA
5.21 Amps
See Ordering Guide.
10 Amps
33.0 Volts
32.0 Volts
None, see application notes.
20 mA pk-pk
Pi-type
See fuse information
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_HPQ Series.A05
Page 3 of 10
HPQ Series
Isolated High Power Quarter Brick DC/DC Converters
Output
Minimum Loading
Maximum Output Power
Accuracy (50% load)
Overvoltage Protection (Note 7)
Temperature Coefficient
Ripple/Noise (20 MHz bandwidth)
Line/Load Regulation (See Tech. Notes)
Efficiency
Remote Sense Compensation
Maximum Capacitive Loading, low ESR
Current Limit Inception (98% of Vout setting)
Short Circuit Mode (Notes 6, 12)
Short Circuit Current Output
Protection Method
Short Circuit Duration
Isolation
Isolation Voltage
Input to Output
Input to Baseplate
Baseplate to Output
Isolation Resistance
Isolation Capacitance
Isolation Safety Rating
Dynamic Characteristics
Dynamic Load Response
Turn-On Time
Remote On/Off Time
Switching Frequency
Environmental
Calculated MTBF (Note 4)
Operating Temperature Range
Storage Temperature Range
Thermal Protection/Shutdown
(Case temp. is measured in the center)
Relative Humidity
Physical
Outline Dimensions
Weight
Electromagnetic Interference
(may require external filter)
Safety (designed to meet)
See Mechanical Specifications
1.06 ounces (30 grams)
FCC Part 15, EN55022, Class B, conducted and radiated
UL/cUL 60950-1
CSA-C22.2 No. 60950-1
IEC/EN 60950-1
TBC
-40 to +85
°C
(with derating)
-55 to +125
°C
+115
°C
85%/+85
°C
200 µSec to within ±1% of final value. (50-75-50% load step)
10 mSec for Vout regulated
10 mSec for Vout regulated
400 ±40 KHz
2250 Vdc min.
1500 Vdc min.
1500 Vdc min.
10 Megohms
1000 pF
Basic insulation
5 Amps
Hiccup autorecovery upon overload removal. (See note 12)
Continuous, no damage (output shorted to ground)
No minimum load
166.6 Watts
±1 % of Vsetting. See note 16.
4 Volts
±0.02% per
°C.
of Vout range
See Ordering Guide and note 8.
See Ordering Guide and note 10.
See Ordering Guide
+10% max. deviation from output
10,000 µF max. See note 11.
59 Amps (after warm up) See note 12.
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_HPQ Series.A05
Page 4 of 10
HPQ Series
Isolated High Power Quarter Brick DC/DC Converters
Absolute Maximum Ratings
Input Voltage
Continuous or transient
Output Power
On/Off Control
Input Reverse Polarity Protection
Output Current
Storage Temperature
Lead Temperature
75 Volts max.
166.6 Watts max.
0V. min. to +15 V. max.
See Fuse section
Current-limited.
Devices can withstand sustained short circuit without damage.
-55 to +125
°C
+280
°C,
10 seconds max
Absolute maximums are stress ratings. Exposure of devices to any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Func-
tional Specifications Table is not implied nor recommended.
CAUTION:
This product is not internally fused. To comply with safety agency certifications and to avoid injury to personnel or equipment, the user
must
supply an external fast-blow fuse to the input terminals. See
fuse information.
Specification Notes
(1) All models are tested and specified with external 1||10 µF output capacitors and no external input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate our test equipment
and may not be required to achieve specified performance in your applications. All models are stable and regulate within spec under no-load conditions.
All specifications are typical unless noted. General conditions for Specifications are +25 °C, Vin=nominal, Vout=nominal, full load. Adequate airflow must be supplied for extended testing under power.
(2) Reflected Input Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=33 µF, 100V, Cbus=220 µF, 100V electrolytic, Lbus=12 µH.
(3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if the total
RMS current over time does not exceed the Derating curve. All Derating curves are presented at sea level altitude. Be aware of reduced power dissipation with increasing density altitude.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground fixed conditions, Tpcboard=+25 °C, full output load, natural air convection.
(5) The On/Off Control is normally controlled by a switch, relay or open collector or open drain transistor. But it may also be driven with external logic or by applying appropriate external voltages which are refer-
enced to Input Common.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting.
(7) The outputs are not intended to sink appreciable reverse current. This may damage the outputs.
(8) Output noise may be further reduced by adding an external filter. See I/O Filtering and Noise Reduction.
(9) All models are fully operational and meet published specifications, including “cold start” at –40
°C.
Maximum power requires that the package temperature of all on-board components must never exceed +128°C.
(10) Regulation specifications describe the deviation as the line input voltage or output load current is varied from a nominal midpoint value to either extreme.
(11) The converter is normally specified with the Input/Output filtering listed in Note 1. Higher capacitive load will reduce noise but at the expense of delayed settling time, extended turn-on time and slower transient
response. Use only as much output filtering as needed
and no more.
Thoroughly test your system under full load with all components installed. Low ESR capacitors with high capacitance may degrade dynamic
performance.
(12) “Hiccup” overcurrent operation repeatedly attempts to restart the converter with a brief, full-current output. If the overcurrent condition still exists, the restart current will be removed and then tried again. This short
current repeating pulse prevents overheating and damaging the converter. Output current limit and short circuit protection is non-latching. Once the fault is removed, the converter immediately recovers normal
operation.
(13) Do not exceed maximum power specifications when adjusting the output trim.
(14) At zero output current, the output may contain low frequency components which exceed the ripple specification. The output may be operated indefinitely with no load.
(15) Input Fusing: If reverse polarity is accidentally applied to the input, a body diode will become forward biased and will conduct considerable current. To ensure reverse input protection, always connect an external
input fast-blow fuse in series with the +Vin input. Use approximately twice the full input current rating with nominal input voltage.
(16) Output accuracy is dependent on user-supplied trim resistors. To achieve high accuracy, use ±1% or better tolerance metal-film resistors.
(17.) Always connect the sense pins. If they are not connected to a remote load, wire each sense pin to its respective voltage output at the converter pins.
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