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PDF UEI-12 Data sheet ( Hoja de datos )
| Número de pieza | UEI-12 | |
| Descripción | 50-60W Isolated Wide-Range DC/DC Converters | |
| Fabricantes | Murata Manufacturing | |
| Logotipo |  |
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www.murata-ps.com
www.DataSheet4U.com
UEI Series
50-60W Isolated Wide-Range DC/DC Converters
Featuring a full 50-60 Watt output in 2.9 square inches of board area,
the UEI series isolated DC/DC converter family offers efficient
regulated DC power for printed circuit board mounting.
Typical unit
FEATURES
Small footprint DC/DC converter, ideal for high
current applications
Industry standard 1.50˝ x 1.90˝ x 0.38˝ open
frame package and pinout
Wide range input voltages 9-36 and 18-75Vdc
Assembly and attachment for RoHS standards
Isolation up to 2250 VDC (basic)
Up to 50-60W total output power with
overtemperature shutdown
High efficiency synchronous rectifier forward
topology
Stable no-lead operation with no required
external components
–40 to +85°C temperature range with derating
Designed to meet UL60950-1, CSA-C22.2 No.
234, EN60950-1 safety approvals
Extensive self-protection shut down features
RoHS6 compliant
PRODUCT OVERVIEW
Wide range 4:1 inputs on the 1.50" x 1.90" x
0.38" converter are either 9 to 36 Volts DC (Q12
models) or 18 to 75 Volts DC (Q48 models), ideal
for battery-powered and telecom equipment.
Fixed output voltages from 3.3 VDC to 15 VDC are
regulated to within ±0.05% and may be trimmed
within ±10% of nominal output. Applications
include small instruments, computer-based
systems, data communications equipment, remote
sensor systems, vehicle and portable electronics.
The UEI 50-60W Series includes full magnetic
and optical isolation up to 2250 Volts DC (basic
insulation). For connection to digital systems, the
outputs offer fast settling to current step loads
and tolerance of higher capacitive loads. Excellent
ripple and noise specifications assure compatibil-
ity to circuits using CPU’s, ASIC’s, programmable
logic and FPGA’s. No minimum load is required.
For systems requiring controlled startup/shut-
down, an external switch, transistor or digital logic
may be used to activate the remote On/Off control.
Remote Sense inputs compensate for resistive line
drops at high currents.
A wealth of self-protection features avoid both
converter and external circuit problems. These
include input undervoltage lockout, input overvolt-
age and overtemperature shutdown. The outputs
current limit using the “hiccup” autorestart
technique and the outputs may be short-circuited
indefinitely. Additional features include output
overvoltage and reverse conduction elimination.
The synchronous rectifier forward topology
offers high efficiency for minimal heat buildup
and “no fan” operation. The open frame design is
also available under special quantity order with
an encapsulation shell and thermally-conductive
potting compound. This option offers additional
cooling in low-airflow, high temperature applica-
tions.
SIMPLIFIED SCHEMATIC
For full details go to
www.murata-ps.com/rohs
+VIN
–VIN
On/Off
Control
Control
Typical topology is shown.
GATE
DRIVE
ISOLATION
BARRIER
OPTO
ISOLATION
Reference, trim &
Error Amplifier
+VOUT
–VOUT
+SENSE
TRIM
–SENSE
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MDC_UEI Series 50-60W.B24 Page 1 of 12
1 page  
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UEI Series
50-60W Isolated Wide-Range DC/DC Converters
ISOLATION CHARACTERISTICS
Model Family
UEI-3.3/15-Q12
UEI-3.3/18-Q48
UEI-5/10-Q12
UEI-5/12-Q48
UEI-12/4.2-Q12
UEI-12/5-Q48
UEI-15/3.3-Q12
UEI-15/4-Q48
Input to
Output.
Min
VDC
2000
2250
2000
2250
2000
2250
2000
2250
Isolation
Resistance
Min
Isolation
Capacitance
Isolation Safety
Rating
MΩ pF
10
10
10
10
10
1000
Basic
insulation
10
10
10
DYNAMIC CHARACTERISTICS
Model Family
Dynamic Load
Start-up Time
Response
(50-75-50%
load step)
VIN to VOUT Remote On/Off Switching
regulated
to VOUT
Frequency
(Max.) regulated (Max.)
UEI-3.3/15-Q12
UEI-3.3/18-Q48
UEI-5/10-Q12
UEI-5/12-Q48
UEI-12/4.2-Q12
UEI-12/5-Q48
UEI-15/3.3-Q12
UEI-15/4-Q48
μsec
100 to 2% VOUT
180 to 2% VOUT
mSec
100 to 2% VOUT
200 to 1% VOUT
400 to 1% VOUT
150 to 1% VOUT
TBD
50
mSec
50
KHz
275
280
275
250
265
TBD
MISCELLANEOUS CHARACTERISTICS
Model Family
Output Current
Limit Inception Output
Short
98% of VOUT,
after warmup
A
Circuit
Protection
Method
UEI-3.3/15-Q12
20
UEI-3.3/18-Q48
23
UEI-5/10-Q12
UEI-5/12-Q48
UEI-12/4.2-Q12
UEI-12/5-Q48
14
15.5
6
6.1
Current
limiting,
hiccup
auto
restart
UEI-15/3.3-Q12
5.3
UEI-15/4-Q48
5.8
Output
Short
Circuit
Current
A
0.5
0.06
0.5
TBD
Output
Short Circuit
Duration
(output shorted
Pre-biased
setup
Calculated
MTBF
to ground)
Hours
Continuous
Monotonic
(external 2,000,000
VOUT < VSET)
Operating Temperature
Range
Storage
temperature
range
Thermal
protection/
shutdown
Relative
Humidity,
non-
condensing
ºC ºC ºC
–40 to +85ºC;
with Derating
(see Notes)
–55 to 125ºC 115
To +85ºC/
85%
Specification Notes:
(1) All models are tested and specified with external 1||10 μF output capacitors and a 22 μF 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 deg.C,
Vin=nominal, Vout=nominal, full load. Adequate airflow must be supplied for extended testing under
power.
(2) Input Back 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, 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 deg.C, full load, natural air convection.
(5) The On/Off Control is normally selected by a switch or an 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 and do not exceed the On/Off voltage specifications.
(6) Output current limiting begins when the output voltage degrades approximately 2% from the
selected setting.
(7) The outputs are not intended to sink appreciable reverse current.
(8) Output noise may be further reduced by adding an external filter. Low voltage logic circuits may
have a small voltage margin between logic ZERO and logic ONE, requiring noise suppression. Use only
as much output filtering as needed to achieve your noise requirements. Excessive output capacitance
can retard transient response or possibly cause instability. Low ESR ceramic capacitors may degrade
dynamic performance. Be sure to thoroughly test your system under full load with all components
installed.
(9) All models are fully operational and meet published specifications, including “cold start” at –40°C.
At full power, the package temperature of all on-board components must not 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 output overvoltage protection is automatic recovery. The overvoltage may occur either from
internal failure or from an external forcing voltage as in a shared power system.
(12) Output current limit and short circuit protection is non-latching. When the overcurrent fault is
removed, the converter will immediately recover. After an output overcurrent or short circuit, “hiccup”
operation repeatedly attempts to restart the converter with a brief, full-current output. If the overcur-
rent condition still exists, the restart current will be removed and then tried again. This short current
pulse prevents overheating and damaging the converter. Once the fault is removed, the converter
immediately resumes 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) If reverse polarity is accidentally applied to the input, to ensure reverse input protection with full
output load, always connect an external input fuse in series with the +Vin input. Use approximately
twice the full input current rating with nominal input voltage.
CAUTION: This product is not internally fused. To comply with safety agency certifications and to
avoid injury to personnel or equipment, the user must connect an external fast-blow fuse to the input
terminals. See fuse information.
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MDC_UEI Series 50-60W.B24 Page 5 of 12
5 Page 
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UEI-5/12-Q48
Efficiency vs. Line Voltage and Load Current @ 25ºC
92
90
88
86
84 VIN = 18V
82 VIN = 24V
80 VIN = 36V
78 VIN = 48V
VIN = 60V
76
VIN = 75V
74
72
123456789
Load Current (Amps)
UEI Series
50-60W Isolated Wide-Range DC/DC Converters
Typical Performance Curves
UEI-5/12-Q48N Maximum Current Temperature Derating at Sea Level
(VIN = 48V, air flow is from pin 1 to pin 2)
12
11.5
11
10.5
10
9.5
9
Natural Convection
100 LFM
200 LFM
300 LFM
400 LFM
10 11 12
8.5
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Ambient Temperature (°C)
UEI-12/4.2-Q12
Efficiency vs. Line Voltage and Load Current @ 25ºC
92.5
90.0
87.5
85.0 VIN = 9V
82.5
VIN = 24V
80.0
77.5 VIN = 36V
75.0
72.5
70.0
67.5
65.0
62.5
60.0
0.31 0.69 1.13 1.48 1.87 2.25 2.64 3.01 3.42 3.81 4.20
Load Current (Amps)
UEI-12/4.2-Q12 Maximum Current Temperature Derating at Sea Level
(VIN = 24V, airflow is from pin 1 to pin 2)
4.25
4.20
4.15
4.10 Natural Convection
4.05 100 LFM
200 LFM
4.00
300 LFM
3.95
3.90
3.85
3.80
40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C)
90
UEI-12/5-Q48
Efficiency vs. Line Voltage and Load Current @ 25ºC
92
90
88
86 VIN = 18V
84 VIN = 24V
82
VIN = 36V
80
78 VIN = 48V
76 VIN = 75V
74
72
70
68
66
0.5 1 1.75 2.5 3
3.5
Load Current (Amps)
4
4.5 5
UEI-12/5-Q48 Maximum Current Temperature Derating at Sea Level
(VIN = 48V, air flow is from pin 2 to pin 1)
5.2
4.95
4.7
4.45
4.2
3.95
3.7
3.45
Natural Convection
100 LFM
200 LFM
300 LFM
400 LFM
3.2
2.95
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Ambient Temperature (°C)
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MDC_UEI Series 50-60W.B24 Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet UEI-12.PDF ] | |
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