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PDF HPQ-8.3 Data sheet ( Hoja de datos )
| Número de pieza | HPQ-8.3 | |
| Descripción | Isolated 22-Amp Quarter Brick DC/DC Converters | |
| Fabricantes | Murata Power Solutions | |
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www.murata-ps.com
HPQ-8.3/22-D48 Series
Isolated 22-Amp Quarter Brick DC/DC Converters
Typical unit
FEATURES
8.3 Volts DC fixed output up to 22 Amps
Industry standard quarter brick 2.3" x 1.45" x
0.4" 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 183 Watts total output power
High efficiency (92.5%) synchronous rectifier
topology
Stable no-load operation with no required external
components
Operating temperature range -40 to +85° C.
with no heat sink required
Certified to UL/EN 60950-1, CSA-C22.2 No.
60950-1, 2nd edition safety approvals
(certification is pending)
Extensive self-protection, current limiting and
shut down features
“X” optional version omits sense pins
PRODUCT OVERVIEW
The HPQ-8.3/22-D48 series offers high output
current (up to 22 Amps) in an industry standard
“quarter brick” package requiring no heat sink for
most applications. The HPQ-8.3/22-D48 series de-
livers fixed 8.3 Vdc output at 183 Watts for printed
circuit board mounting. Wide range inputs on the
2.3" x 1.45" x 0.4" 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 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
“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-8.3/22-D48
series is certified to UL safety standards (pending)
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
F1 +Vin (3)
External
DC
Power
Source
On/Off
Control
(2)
Open = On
$MPTFE 0GG
1PTJUJWF
polarity)
*TPMBUJPO
Barrier
Controller
and Power
5SBOTGFS
t4XJUDIJOH
t'JMUFST
t$VSSFOU4FOTF
Reference and
Error Amplifier
+Vout (8)
4FOTF
4FOTF
Trim (6)
-Vin (1)
-Vout (4)
Figure 1. Connection Diagram
Typical topology is shown. Murata Power Solutions
recommends an external fuse.
* “X” option omits sense pins.
For full details go to
www.murata-ps.com/rohs
(certification is pending)
www.murata-ps.com
email: [email protected]
31 Aug 2010 MDC_HPQ-8.3-22-D48 Series.A01 Page 1 of 14
www.DataSheet.in
1 page  
HPQ-8.3/22-D48 Series
Isolated 22-Amp 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
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
MECHANICAL (Through Hole Models)
Outline Dimensions (no baseplate)
(Please refer to outline drawing)
Outline Dimensions (with baseplate)
Conditions ➀
ON = pin open or external voltage
OFF = ground pin or external voltage
open collector/drain
(Vout - Vsense) Sense pins connected externally
at load
"B" suffix
Vin = 48V.
At 50% load, no trim
User-adjustable
Full load
97% 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.
5 Hz- 20 MHz BW, Cout=1μF MLCC paralleled
with 10μF tantalum
At all outputs
Full resistive load, low ESR
C59 case
WxLxH
Weight
Through Hole Pin Diameter
No baseplate
No baseplate
With baseplate
With baseplate
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Baseplate Material
ENVIRONMENTAL
Operating Ambient Temperature Range
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
Radiated, EN55022/CISPR22
Relative humidity, non-condensing
Altitude
Nickel subplate
Gold overplate
No derating, full power, 200 LFM, no condensation
Vin = Zero (no power)
Measured in center
External filter is required
To +85°C
must derate -1%/1000 feet
RoHS rating
Minimum
5
0
Typical/Nominal
optional
0.0 182.6
(Please refer to the Ordering Guide)
-1
7.47 8.3
9.5
0.0 22
No minimum load
25 29
Continuous
Non-latching
100
±0.02
600 4700
1.45x2.3x0.4
36.8x58.4x10.2
1.45x2.3x0.5
36.8x58.4x12.7
1.06
30
TBD
TBD
0.04 & 0.062
1.016 & 1.575
Copper alloy
100-299
3.9-19.6
Aluminum
-40
-55
105 110
B
B
10
-500
-152
RoHS-6
Maximum
13.5
1
2
0.5
184.4
1
9.13
12
22
34.5
5.0
Units
V
V
mA
V
W
% Vout
V
% Vout
A
A
A
±0.125
±0.25
150
10,000
85
125
125
90
10,000
3048
% 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
°C
°C
˚C
Class
Class
%RH
feet
meters
www.DataSheet.in
www.murata-ps.com
email: [email protected]
31 Aug 2010 MDC_HPQ-8.3-22-D48 Series.A01 Page 5 of 14
5 Page 
HPQ-8.3/22-D48 Series
Isolated 22-Amp Quarter Brick DC/DC Converters
+OUTPUT
COPPER STRIP
C1
C2 SCOPE
RLOAD
−OUTPUT
COPPER STRIP
C1 = 0.1μF CERAMIC
C2 = 10μF LOW ES
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 3. Measuring Output Ripple and Noise (PARD)
and a DC leakage resistance. When using the isolation feature, do not allow
the isolation voltage to exceed specifications. Otherwise the converter may
be damaged. Designers will normally use the negative output (-Output) as
the ground return of the load circuit. You can however use the positive output
(+Output) as the ground return to effectively reverse the output polarity.
Minimum Output Loading Requirements
These converters employ a synchronous rectifier design topology. All models
regulate within specification and are stable under no load to full load conditions.
Operation under no load might however slightly increase output ripple and noise.
Thermal Shutdown
To protect against thermal over-stress, these converters include thermal shut-
down circuitry. If environmental conditions cause the temperature of the DC/
DC’s to rise above the Operating Temperature Range up to the shutdown tem-
perature, an on-board electronic temperature sensor will power down the unit.
When the temperature decreases below the turn-on threshold, the converter
will automatically restart. There is a small amount of hysteresis to prevent
rapid on/off cycling. CAUTION: If you operate too close to the thermal limits, the
converter may shut down suddenly without warning. Be sure to thoroughly test
your application to avoid unplanned thermal shutdown.
Temperature Derating Curves
The graphs in the next section illustrate typical operation under a variety of condi-
tions. The Derating curves show the maximum continuous ambient air temperature
and decreasing maximum output current which is acceptable under increasing
forced airflow measured in Linear Feet per Minute (“LFM”). Note that these are
AVERAGE measurements. The converter will accept brief increases in temperature
and/or current or reduced airflow as long as the average is not exceeded.
Note that the temperatures are of the ambient airflow, not the converter itself
which is obviously running at higher temperature than the outside air. Also note
that “natural convection” is defined as very low flow rates which are not using
fan-forced airflow. Depending on the application, “natural convection” is usu-
ally about 30-65 LFM but is not equal to still air (0 LFM).
Murata Power Solutions makes Characterization measurements in a closed
cycle wind tunnel with calibrated airflow. We use both thermocouples and an
infrared camera system to observe thermal performance. As a practical matter,
it is quite difficult to insert an anemometer to precisely measure airflow in
most applications. Sometimes it is possible to estimate the effective airflow if
you thoroughly understand the enclosure geometry, entry/exit orifice areas and
the fan flowrate specifications.
CAUTION: If you exceed these Derating guidelines, the converter may have an
unplanned Over Temperature shut down. Also, these graphs are all collected
near Sea Level altitude. Be sure to reduce the derating for higher altitude.
Output Overvoltage Protection (OVP)
This converter monitors its output voltage for an over-voltage condition using
an on-board electronic comparator. The signal is optically coupled to the pri-
mary side PWM controller. If the output exceeds OVP limits, the sensing circuit
will power down the unit, and the output voltage will decrease. After a time-out
period, the PWM will automatically attempt to restart, causing the output volt-
age to ramp up to its rated value. It is not necessary to power down and reset
the converter for this automatic OVP-recovery restart.
If the fault condition persists and the output voltage climbs to excessive levels,
the OVP circuitry will initiate another shutdown cycle. This on/off cycling is
referred to as “hiccup” mode.
Output Fusing
The converter is extensively protected against current, voltage and temperature
extremes. However, your application circuit may need additional protection. In the
extremely unlikely event of output circuit failure, excessive voltage could be applied
to your circuit. Consider using an appropriate external protection.
Output Current Limiting
As soon as the output current increases to approximately its overcurrent limit,
the DC/DC converter will enter a current-limiting mode. The output voltage will
decrease proportionally with increases in output current, thereby maintaining a
somewhat constant power output. This is commonly referred to as power limiting.
Current limiting inception is defined as the point at which full power falls below
the rated tolerance. See the Performance/Functional Specifications. Note
particularly that the output current may briefly rise above its rated value. This
enhances reliability and continued operation of your application. If the output
current is too high, the converter will enter the short circuit condition.
Output Short Circuit Condition
When a converter is in current-limit mode, the output voltage will drop as
the output current demand increases. If the output voltage drops too low, the
magnetically coupled voltage used to develop PWM bias voltage will also drop,
thereby shutting down the PWM controller. Following a time-out period, the
PWM will restart, causing the output voltage to begin rising to its appropriate
value. If the short-circuit condition persists, another shutdown cycle will initi-
ate. This on/off cycling is called “hiccup mode.” The hiccup cycling reduces the
average output current, thereby preventing excessive internal temperatures.
Trimming the Output Voltage (See Specification Note 7)
The Trim input to the converter allows the user to adjust the output voltage over
the rated trim range (please refer to the Specifications). In the trim equations
and circuit diagrams that follow, trim adjustments use a single fixed resistor
connected between the Trim input and either Vout pin. Trimming resistors should
have a low temperature coefficient (±100 ppm/deg.C or less) and be mounted
www.DataSheet.in
www.murata-ps.com
email: [email protected]
31 Aug 2010 MDC_HPQ-8.3-22-D48 Series.A01 Page 11 of 14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet HPQ-8.3.PDF ] | |
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