UEI-3.3/15-Q12NR-C Murata Power Solutions Inc, UEI-3.3/15-Q12NR-C Datasheet - Page 5

• Manufacturer Part Number: UEI-3.3/15-Q12NR-C
• Description: CONVERTER, DC/DC, 3.3V, 15A
• Manufacturer: Murata Power Solutions Inc

Specifications of UEI-3.3/15-Q12NR-C

• No. Of Output Channels: 1
• Input Voltage: 9V To 36V
• Power Rating: 49.5W
• Output Voltage: 3.3V
• Output Current: 15A
• Supply Voltage: 24V
• Dc / Dc Converter Case Style: Through Hole
• Isolation Voltage: 2.25kV
• Product: Isolated
• Output Power: 50 W
• Input Voltage Range: 9 V to 36 V
• Output Voltage (channel 1): 3.3 V
• Output Current (channel 1): 15 A
• No. Of Outputs: 1
• Approval Bodies: CSA / EN / UL
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
ISOLATION CHARACTERISTICS
MISCELLANEOUS CHARACTERISTICS
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
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
UEI-3.3/15-Q12
Model Family
Model Family
Limit Inception
after warmup
98% of V
Current
15.5
5.2
6.7
5.3
5.8
20
23
14
A
out
Input to
Output.
2000
2250
2000
2250
2000
2250
2000
2250
,
Min
V
Protection
Method
limiting,
Current
Circuit
hiccup
restart
Short
auto
Resistance
Isolation
Min
MΩ
10
10
10
10
10
10
10
10
Current
Circuit
Short
www.murata-ps.com
TBD
A
(output shorted
Capacitance
Short Circuit
Isolation
to ground)
Continuous
Duration
pF
65
Isolation Safety
Pre-biased
Monotonic 2,000,000
insulation
setup
Rating
Basic
as much output filtering as needed to achieve your noise requirements. Excessive output capacitance
can retard transient response or possibly cause ringing or 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, a body diode will become forward biased
and will conduct considerable current. 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.
Calculated
MTBF
Hours
50-60W Isolated Wide-Range DC/DC Converters
Model Family
DYNAMIC CHARACTERISTICS
All models
Operating Temperature
Technical enquiries email: [e-mail], tel:
–40 to +85ºC;
with Derating
(see Notes)
Dynamic Load
100 to 2% V
180 to 2% V
100 to 2% V
(50-75-50%
Range
load step)
Response
μsec
out
out
out
MDC_UEI Series 50-60W.B16 Page 5 of 10
V
regulated
in
(Max.)
mSec
to V
50
temperature
–55 to 125ºC
Storage
Start-up Time
out
range
ºC
regulated (Max.)
UEI Series
Remote On/Off
to V
mSec
protection/
shutdown
50
Thermal
out
115
ºC
[phone]
condensing
Frequency
Switching
Humidity,
To +85ºC/
Relative
non-
85%
KHz
275
280
275
ºC