Stable no-load operation with no required external
components
Operating temperature range -40 to +85° C.
with no heat sink required
ed to UL/EN 60950-1, CSA-C22.2 No.
Certifi
60950-1, 2nd edition safety approvals
Extensive self-protection, current limiting and
shut down features
optional version omits trim and sense pins
“X”
The HPQ-12/25-D48 series offers high output
current (up to 25 Amps) in an industry standard
“quarter brick” package requiring no heat sink for
most applications. The HPQ-12/25-D48 series de-
livers fixed 12 Vdc output at 300 Watts for printed
circuit board mounting. Wide range inputs on the
2.3” x 1.45” x 0.49” converter are 36 to 75 Volts
DC (48 Volts nominal), ideal for datacom and telecom
systems. The fixed output voltage is regulated to
within ±0.25%.
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 specifications as-
sure 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 posi-
tive or negative logic. 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
“hiccup” autorestart technique provides indefinite
short-circuit protection. Additional safety features
include output overvoltage protection and reverse
conduction elimination. The synchronous rectifier to-
pology offers high efficiency for minimal heat buildup
and “no heat sink” operation. The HPQ-12/25-D48
series is certified to full safety standards 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
farms, data centers and cellular repeater sites
Disk
Remote sensor systems, dedicated controllers
Instrumentation systems, R&D platforms, auto-
mated test fixtures
concentrators, voice forwarding and
Data
speech processing systems
F1
+Vin (1)
Barrier
+Vout (8)
External
DC
Power
Source
On/Off
Control
(2)
Controller
and Power
Open = On
Reference and
Error Amplifier
-Vin (3)
-Vout (4)
Figure 1. Connection Diagram
Typical topology is shown. Murata Power Solutions
recommends an external fuse.
* “X” option omits trim and sense pins.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_HPQ-12/25-D48 Series.B07
Page 1 of 16
HPQ-12/25-D48 Series
Isolated 300-Watt Quarter Brick DC-DC Converters
PEFORMANCE SPECIFICATION SUMMARY AND ORDERING GUIDE
➀
Output
R/N (mV
pk-pk)
Max.
120
Regulation (Max.)
➁
Line
Load
Input
Efficiency
I
IN
full
V
IN
Nom. Range
I
IN
no
load
(Volts) (Volts) load (mA) (Amps) Min.
➂
Typ.
48
36-75
150
6.61
94%
95%
Package (C59)
Dimensions
(inches)
Dimensions
(mm)
I
OUT
V
OUT
(Amps, Power
Root Model
➀
(Volts) max.) (Watts) Typ.
HPQ-12/25-D48
12
25
300
80
±0.125% ±0.25%
2.3x1.45x0.49
max.
58.4x36.8x12.45
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 in parallel with 10 μF electrolytic
with no input caps.These caps are necessary for our test equipment and may not be needed for
your application.
➂
Ta=25C, Vin=48V, Full load condition.
PART NUMBER STRUCTURE
HPQ
-
12
/
25
-
D48 N B
Family
Series:
High Power
Quarter Brick
Nominal Output Voltage
H X 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
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)*
Trim & Sense Pins Option
Blank
= Trim and Sense installed, standard
X
= Trim and Sense removed
Z
= Sense removed (Trim included)
Conformal coating (optional)
Blank
= no coating, standard
H
= Coating added, optional
Maximum Rated Output
Current in Amps
Input Voltage Range:
D48
= 36-75 Volts (48V nominal)
On/Off Control Logic
N
= Negative logic, standard
P
= Positive logic, optional
*Special
quantity order is
required; samples available
with standard pin length only.
Baseplate (optional)
Blank
= No baseplate, standard
B
= Baseplate installed, optional
Note:
Some model number combinations
may not be available. See website
or contact your local Murata sales
representative.
Complete Model Number Example:
HPQ-12/25-D48NBHXL1-C
Negative On/Off logic, baseplate installed, conformally coated, trim and sense pins removed, 0.110˝ pin length, RoHS-6 compliance
www.murata-ps.com/support
MDC_HPQ-12/25-D48 Series.B07
Page 2 of 16
HPQ-12/25-D48 Series
Isolated 300-Watt Quarter Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Input Voltage, Continuous
Input Voltage, Transient
Isolation Voltage
Input Reverse Polarity
On/Off Remote Control
Output Power
Output Current
Conditions
➀
Full power operation
Operating or non-operating,
100 mS max. duration
Input to output tested 100 mS
None, install external fuse
Power on or off, referred to -Vin
Minimum
36
Typical/Nominal
Maximum
80
100
2250
Units
Vdc
Vdc
Vdc
Vdc
Vdc
W
None
0
0
13.5
300
Current-limited, no damage,
0
25
A
short-circuit protected
Storage Temperature Range
Vin = Zero (no power)
-55
125
°C
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 or recommended.
INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold
Undervoltage shutdown
Overvoltage protection
Reverse Polarity Protection
Internal Filter Type
Input current
Full Load Conditions
Low Line
Inrush Transient
Output in Short Circuit
No Load
Standby Mode (Off, UV, OT)
Reflected (back) ripple current
➁
Conditions
➀ ➂
36
Fast blow
Rising input voltage
Falling input voltage
Rising input voltage
None, install external fuse
33
31
48
20
34
32
None
None
Pi-type
6.61
8.82
0.3
50
150
5
50
94
2250
2250
1500
1500
basic
10
1000
Certified to UL-60950-1, CSA-C22.2 No.60950-1,
IEC/EN60950-1, 2nd edition
Per MIL-HDBK-217F, ground benign,
Tambient=+TBD°C
Per Telcordia SR-332, issue 1, class 3, ground
fixed, Tcase=+25°C
Yes
TBD
1500
260
Power On, to Vout regulation band,
100% resistive load
Remote ON to Vout Regulated
50-75-50% load step to 1% error band
same as above
25
550
±500
25
825
0.1
±750
Hours x 10
3
Hours x 10
3
KHz
mS
mS
μSec
A / μSec
mV
MΩ
pF
95
75
35
34
Vdc
A
Vdc
Vdc
Vdc
Vdc
Vin = nominal
Vin = minimum
Vin = 48V.
Iout = minimum, unit=ON
Measured at input with specified filter
Vin=48V, full load
No baseplate
With baseplate
With baseplate
With baseplate
6.82
9.1
100
250
10
70
A
A
A2-Sec.
mA
mA
mA
mA, RMS
%
Vdc
Vdc
Vdc
Vdc
GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage, input to output
Isolation Voltage, input to output
Isolation Voltage, input to baseplate
Isolation Voltage, output to baseplate
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
Calculated MTBF
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
➈
Startup Time
Dynamic Load Response
Dynamic Load di/dt
Dynamic Load Peak Deviation
FEATURES and OPTIONS
Remote On/Off Control
➃
“N” suffix:
Negative Logic, ON state
Negative Logic, OFF state
Control Current
ON = pin grounded or external voltage
OFF = pin open or external voltage
open collector/drain
-0.1
3.5
0.8
13.5
2
Vdc
Vdc
mA
www.murata-ps.com/support
MDC_HPQ-12/25-D48 Series.B07
Page 3 of 16
HPQ-12/25-D48 Series
Isolated 300-Watt Quarter Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONT.)
FEATURES and OPTIONS (cont.)
Remote On/Off Control (cont.)
➃
“P” suffix:
Positive Logic, ON state
Positive Logic, OFF state
Control Current
Remote Sense Compliance
➆
Base Plate
Conditions
➀
Minimum
Typical/Nominal
Maximum
Units
ON = pin open or external voltage
OFF = ground pin or external voltage
open collector/drain
Vsense=Vout - Vload, Sense pins connected
externally to respective Vout’s
"B" suffix
3.5
0
13.5
0.8
2
0.5
optional
V
V
mA
V
OUTPUT
Total Output Power
Voltage
Setting Accuracy
Output Voltage Range
➆
Overvoltage Protection
Current
Output Current Range
Minimum Load
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Regulation
➄
Line Regulation
Load Regulation
Ripple and Noise
➅
Temperature Coefficient
Maximum Capacitive Loading
0.0
At 50% load, no trim
User-adjustable
Via magnetic feedback
11.76
-10
300
12
14.4
0.0
98% of Vnom., after warmup
Hiccup technique, autorecovery within 1.25%
of Vout
Output shorted to ground, no damage
Hiccup current limiting
Vin=min. to max., Vout=nom., full load
Iout=min. to max., Vin=nom.
Vin=48V, full load, 5 Hz- 20 MHz BW, Cout=1μF
MLCC paralleled with 10μF
At all outputs
Full resistive load, low ESR
C59 case
LxWxH
28.5
No minimum load
32
0.8
Continuous
Non-latching
±0.125
±0.25
80
0.02
0
2.3x1.45x0.49 max.
58.4x36.8x12.45
2.3x1.45x0.5
58.4x36.8x12.7
1.51
47
2.4
68
0.04 & 0.062
1.016 & 1.575
Copper alloy
100-299
3.9-19.6
Aluminum
-40
-40
-55
105
85
110
125
125
4,700
100
% of Vout
% of Vout
mV pk-pk
% of Vout./°C
μF
Inches
mm
Inches
mm
Ounces
Grams
Ounces
Grams
Inches
mm
μ-inches
μ-inches
306
12.24
+10
18
25.0
42
1.0
W
Vdc
% of Vnom.
V
A
A
A
MECHANICAL (Through Hole Models)
Outline Dimensions (no baseplate)
(Please refer to outline drawing)
Outline Dimensions (with baseplate)
Weight
No baseplate
No baseplate
With baseplate
With baseplate
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Baseplate Material
Nickel subplate
Gold overplate
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
Radiated, EN55022/CISPR22
Relative humidity, non-condensing
Altitude
Acceleration
Shock
Sinusoidal Vibration
RoHS rating
See derating curves
No derating required
Vin = Zero (no power)
Measured at hotspot
External filter is required
°C
°C
°C
°C
Class
Class
%RH
feet
meters
g
g
110
B
B
To +85°C
must derate -1%/1000 feet
Halfsine wave, 3 axes
GR-63-Core, Section 5.4.2
10
-500
-152
50
1
RoHS-6
90
10,000
3048
www.murata-ps.com/support
MDC_HPQ-12/25-D48 Series.B07
Page 4 of 16
HPQ-12/25-D48 Series
Isolated 300-Watt Quarter Brick DC-DC Converters
Notes
➀
Unless otherwise noted, all specifications apply over the input voltage range, full temperature
range, nominal output voltage and full output load. General conditions are near sea level altitude,
no base plate installed and natural convection airflow unless otherwise specified. All models are
tested and specified with external parallel 1 μF and 10 μF multi-layer ceramic output capacitors.
No external input capacitor is used (see Application Notes). All capacitors are low-ESR types wired
close to the converter. These capacitors are necessary for our test equipment and may not be
needed in the user’s application.
➁
Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is
Cin = 33 μF, Cbus = 220μF and Lbus = 4.7 μH.
➂
All models are stable and regulate to specification under no load.
➃
The Remote On/Off Control is referred to -Vin.
➄
Regulation specifications describe the output voltage changes as the line voltage or load current
is varied from its nominal or midpoint value to either extreme. The load step is ±25% of full load
current.
➅
Output Ripple and Noise is measured with Cout = 1μF MLCC paralleled with 10μF tantalum, 20
MHz oscilloscope bandwidth and full resistive load.
➆
The Sense and Trim pins are removed for the “X” model option.
➇
NOTICE—Please use only this customer data sheet as product documentation when laying out your
printed circuit boards and applying this product into your application. Do NOT use other materials as
official documentation such as advertisements, product announcements, or website graphics.
We strive to have all technical data in this customer data sheet highly accurate and complete. This cus-
tomer data sheet is revision-controlled and dated. The latest customer data sheet revision is normally
on our website (www.murata-ps.com) for products which are fully released to Manufacturing. Please be
especially careful using any data sheets labeled “Preliminary” since data may change without notice.
The pinout (Pxx) and case (Cxx) designations (typically P65 or C59) refer to a generic family of
closely related information. It may not be a single pinout or unique case outline. Please be aware
of small details (such as Sense pins, Power Good pins, etc.) or slightly different dimensions
(baseplates, heat sinks, etc.) which may affect your application and PC board layouts. Study the
Mechanical Outline drawings, Input/Output Connection table and all footnotes very carefully.
Please contact Murata Power Solutions if you have any questions.
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