Isolated High Power Quarter Brick DC-DC Converters
Typical unit
FEATURES
Volts DC fixed output up to 50 Amps
3.3
Industry standard quarter brick 2.3" x 1.45" x
0.40" open frame package
range 36 to 75 Vdc input voltages with 2250
Wide
Volt Basic isolation
Double lead-free assembly and attachment for RoHS
standards
to 165 Watts total output power
Up
efficiency synchronous rectifier topology
High
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
nverters,
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/
control may
shutdown, an external remote On/Off c
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.
Instrumentation systems, R&D platforms, auto-
mated test fixtures
concentrators, voice forwarding and
Data
speech processing systems
+SENSE
(7)
+V
OUT
(8)
APPLICATIONS
Embedded systems, datacom and telecom
installations
farms, data centers and cellular repeater sites
Disk
Remote sensor systems, dedicated controllers
+V
IN
(1)
SWITCH
CONTROL
−V
OUT
(4)
–V
IN
(3)
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/support
MDC_HPQ-3.3/50-D48 Series.B01
Page 1 of 11
HPQ-3.3/50-D48 Series
Isolated High Power Quarter Brick DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
➀
Output
R/N (mV
pk-pk)
Max.
Regulation
(Max.)
➁
Line
Input
Efficiency
Min.
88%
Typ.
90%
Dimensions
(inches)
Package
Dimensions
(mm)
Pinout
P32
Root Model
➀
HPQ-3.3/50-D48
I
OUT
V
OUT
(Amps, Power
(Volts) max.) (Watts) Typ.
3.3
50
165
50
I
IN
full
V
IN
Nom. Range
I
IN
no
load
Load (Volts) (Volts) load (mA) (Amps)
48
36-75
80
3.82
100 ±0.2% ±0.2%
1.45x2.3x0.40 36.8x58.4x10.2
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.
PART NUMBER STRUCTURE
HPQ
-
3.3
/
50
-
D48 N B
Family
Series:
High Power
Quarter Brick
Nominal Output Voltage
H
Lx
-
C
RoHS Hazardous Materials compliance
C
= RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder), standard
Y
= RoHS-5 (with lead), optional, special quantity order
Maximum Rated Output :
Current in Amps
Input Voltage Range:
D48 = 36-75 Volts (48V nominal)
Pin length option
Blank
= standard pin length 0.180 in. (4.6 mm)
L1
= 0.110 in. (2.79 mm)*
L2
= 0.145 in. (3.68 mm)*
*Special quantity order is required;
no sample quantities available.
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
Note:
Some model number combinations
may not be available. Please contact
Murata Power Solutions.
On/Off Control Polarity
N
= Negative polarity, standard
P
= Positive polarity, optional
www.murata-ps.com/support
MDC_HPQ-3.3/50-D48 Series.B01
Page 2 of 11
HPQ-3.3/50-D48 Series
Isolated High Power Quarter Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS
➀
Absolute Maximum Ratings
Input Voltage
Continuous
Transient, 100 mS max.
Output Power
On/Off Control
Input Reverse Polarity Protection
Output Current
Storage Temperature
Lead Temperature
75 Volts max.
100 Volts max.
166.6 Watts max.
0V. min. to +15 V. max.
None. Install external fuse.
Current-limited.
Devices can withstand sustained short circuit without damage.
-55 to +125
°C
See soldering guidelines.
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions
other than those listed in the Performance/Functional Specifications Table is not implied nor recommended.
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 fast blow
33.0 Volts
32.0 Volts
None, see application notes.
20 mA pk-pk
Pi-type
None. Install external fuse.
www.murata-ps.com/support
MDC_HPQ-3.3/50-D48 Series.B01
Page 3 of 11
HPQ-3.3/50-D48 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 (see note 1)
Turn-On Time
Remote On/Off Time
Switching Frequency
Environmental
Calculated MTBF (Note 4)
Operating Temperature Range (no baseplate)
Maximum Baseplate Operating Temperature
Storage Temperature Range
Thermal Protection/Shutdown
(Case temp. is measured in the center)
Relative Humidity
Physical
Outline Dimensions
Weight (without baseplate)
Electromagnetic Interference
(may require external filter)
Safety
See Mechanical Specifications
1.06 ounces (30 grams)
Meets EN55022, CISPR22, Class B,
conducted and radiated
Meets UL/cUL 60950-1
CSA-C22.2 No. 60950-1
IEC/EN 60950-1, 2nd Edition
TBC
-40 to +85
°C
(with derating)
+100
°C
-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/support
MDC_HPQ-3.3/50-D48 Series.B01
Page 4 of 11
HPQ-3.3/50-D48 Series
Isolated High Power Quarter Brick DC-DC Converters
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 equip-
ment 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
referenced to Input Common.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting.
(7) The output is 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 tran-
sient 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: To ensure reverse input protection, always connect an external input fast-blow fuse in series with the +Vin input.
(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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