MDC_UEI-15W MURATA [Murata Manufacturing Co., Ltd.], MDC_UEI-15W Datasheet - Page 5

• Manufacturer Part Number: MDC_UEI-15W
• Description: Isolated Wide Input Range 15-Watt DC/DC Converters
• Manufacturer: MURATA [Murata Manufacturing Co., Ltd.]

Absolute Maximum Ratings
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 Specifi -
cations is neither implied nor recommended.
table below. The external capacitors listed below are ONLY for establishing test
specifi cations. They are required for our test fi xtures and equipment. Your applica-
tion may not need them. The converter is stable with no external capacitors but
Murata Power Solutions strongly recommends external caps. All caps are low-ESR
types. Where two or more capacitors are listed, these are connected in parallel. All
caps should mount close to the DC/DC using short leads.
tions are +25 deg.C, V
must be supplied for extended testing under power.
width. Input fi ltering is C
trolytic, L
nominal input voltage. At higher temperatures and/or lower airfl ow, 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.
ABSOLUTE MAXIMUM RATINGS
(1) All models are tested and specifi ed with external capacitors listed in the
All specifi cations are typical unless noted. General conditions for Specifi ca-
(2) Input Ripple Current is tested and specifi ed over a 5 Hz to 20 MHz band-
(3) Note that Maximum Power Derating curves indicate an average current at
Input Reverse Polarity Protection
Output Overvoltage, Volts Max.
Output Current, sustained short circuit
Storage Temperature
Voltage
Input
referred to –V
On/Off control,
BUS
Model
UEI15-033-Q12
UEI15-033-Q48
UEI15-050-Q12
UEI15-050-Q48
UEI15-120-Q12
UEI15-120-Q48
UEI15-150-Q12
UEI15-150-Q48
=12 μH.
Q12 models
Q48 models
INPUT/OUTPUT EXTERNAL TEST CAPACITORS
IN
IN
=nominal, V
IN
=33 μF, 100V tantalum, C
SPECIFICATION NOTES
Volts, transient 100mS
Volts, transient 100mS
Volts Max. continuous
Volts Max. continuous
Range, Min. ºC
Max. ºC
Input Capacitor
4.7 μF ceramic
4.7 μF ceramic
4.7 μF ceramic
4.7 μF ceramic
OUT
Volts, Max.
Volts, Min.
100 μF
100 μF
100 μF
100 μF
=nominal, full load. Adequate airfl ow
www.murata-ps.com
BUS
Output Capacitor(s)
Current-limited, see specs
=220 μF, 100V elec-
1 μF & 10 μF
1 μF & 10 μF
1 μF & 10 μF
1 μF & 10 μF
1 μF & 10 μF
1 μF & 10 μF
1 μF & 10 μF
1 μF & 10 μF
V
See fuse section
OUT
100 VDC
36 VDC
50 VDC
75 VDC
nom. +20%
+125
–0.3
-55
15
332 Method 1, Case 3, ground fi xed conditions, Tpcboard=+25 deg.C, full load,
natural air convection.
driven with external logic or by applying appropriate external voltages which
are referenced to Input Common. The On/Off Control Input should use either an
open collector or open drain transistor.
approximately 2% from the selected setting.
may damage the outputs.
I/O Filtering and Noise Reduction.
including “cold start” at –40
on-board components must not exceed +128°C.
or output load current is varied from a nominal midpoint value to either extreme.
removal. The overvoltage may occur either from internal failure or from an
external forcing voltage as in a shared power system.
the overcurrent fault is removed, the converter will immediately recover.
output trim.
ponents which exceed the ripple specifi cation. The output may be operated
indefi nitely with no load.
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 +V
rent rating with nominal input voltage.
a brief, full-current output. If the overcurrent 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 con-
verter immediately recovers normal operation.
downwards from +5.0V (more negative).
agency certifi cations and to avoid injury to personnel or equipment, the user
must connect an external fast-blow fuse to the input terminals. See fuse
information.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-
(5) The On/Off Control is normally controlled by a switch. But it may also be
(6) Output current limiting begins when the output voltage degrades
(7) The outputs are not intended to sink appreciable reverse current. This
(8) Output noise may be further reduced by adding an external fi lter. See
(9) All models are fully operational and meet published specifi cations,
(10) Regulation specifi cations describe the deviation as the line input voltage
(11) The output overvoltage protection is automatic recovery after fault
(12) Output current limit and short circuit protection is non-latching. When
(13) Do not exceed maximum power specifi cations when adjusting the
(14) At zero output current, the output may contain low frequency com-
(15) If reverse polarity is accidentally applied to the input, a body diode
(16) “Hiccup” operation repeatedly attempts to restart the converter with
(17) On model UEI15-050-Q48, if V
CAUTION: This product is not internally fused. To comply with safety
Isolated Wide Input Range 15-Watt DC/DC Converters
Technical enquiries email: [e-mail], tel:
IN
input. Use approximately twice the full input cur-
0
C. At full power, the package temperature of all
IN
<20V, output trim may only be adjusted
UEI15 Series
MDC_UEI15W.B24 Page 5 of 13
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