NXE2 Series Datasheet by Murata Power Solutions Inc.

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Murcia Power Solutions
NXE2 Series
Isolated 2W Single Output SM DC-DC Converters
KDC_NXE2.C01 Page 1 of 10
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SELECTION GUIDE
Order Code1
Nominal Input
Voltage
Output Voltage
Input Current
Output Current
Load Regulation
(Typ)
Load Regulation
(Max)
Output Ripple
& Noise (Typ)
Output Ripple
& Noise (Max)
Efficiency (Min)
Efficiency (Typ)
Isolation
Capacitance
MTTF2
MIL. Tel.
V V mA mA % % mVp-p mVp-p % % pF kHrs
NXE2S0505MC 5 5 542 400 9 12 55 85 68.5 72 2.1 1853 18868
NXE2S1205MC 12 5 220 400 11 12 50 85 74.5 77 2.1 1800 46838
NXE2S1212MC 12 12 210 167 7 8.5 25 55 74.5 76.5 2.1 1848 22472
NXE2S1215MC 12 15 205 133 8.5 11 30 60 76 79 2.1 1631 58568
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage range Continuous operation, 5V input types 4.5 5 5.5 V
Continuous operation, 12V input types 10.8 12 13.2
Input reflected ripple
current
NXE2S0505MC 4
mA p-p
NXE2S1205MC 2.5
NXE2S1212MC 3.3
NXE2S1215MC 2.8
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation voltage Production tested for 1 second 3000 VDC
Qualification tested for 1 minute 3000
Resistance Viso= 1000VDC 10 GΩ
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated power TA=-40°C to 85°C 2.0 W
Voltage set point accuracy See tolerance envelopes
Line regulation4High VIN to low VIN, All other variants 1.15 1.2 %/%
High VIN to low VIN ,1205 variant 1.15 1.26
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency
NXE2S0505MC 130
kHz
NXE2S1205MC 100
NXE2S1212MC 115
NXE2S1215MC 100
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specification See derating graphs -40 85
°C
Storage -50 125
Case temperature rise above ambient
NXE2S0505MC 36
NXE2S1205MC 32
NXE2S1212MC 28
NXE2S1215MC 27
Cooling Free air convection
ABSOLUTE MAXIMUM RATINGS
Input voltage VIN, NXE2S05 types 7V
Input voltage VIN, NXE2S12 types 15V
1. Components are supplied in tape and reel packaging, please refer to package specification section. Orderable part numbers are
NXE2SXXXXMC-R7 (180 pieces per reel), or NXE2SXXXXMC-R13 (800 pieces per reel).
2. Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load.
3. Please refer to short circuit application notes.
4. NXE2S1205MC line regulation may increase to 2.15 %/% at the operating temperature limits.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
PRODUCT OVERVIEW
The NXE2 series is a new range of low cost, lower
profile, fully automated manufacture surface
mount DC-DC converters. The NXE2 series
automated manufacturing process with substrate
embedded transformer, offers increased product
reliability and repeatability of performance in a
halogen free, iLGA inspectable package. The NXE2
series, industry standard footprint is compatible
with existing designs.
The NXE2 series has a MSL rating 2, and is com-
patible with a peak reflow solder temperature of
260˚C as per J-STD-020.
FEATURES
Patents pending
Lower Profile
UL60950 Recognised
ANSI/AAMI ES60601-1 Recognised
3kVDC Isolation “Hi Pot Test”
Substrate Embedded Transformer
Automated Manufacture
Industry Standard Footprint
Short Circuit Protection3
Halogen Free
Murcia Power Solutions (um IV: a
NXE2 Series
Isolated 2W Single Output SM DC-DC Converters
KDC_NXE2.C01 Page 2 of 10
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TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage,
applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions NXE2 series of DC-DC converters are all 100% production tested at 3kVDC for 1 second and have been qualification tested at 3kVDC for 1 minute.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
When the insulation in the NXE2 series is not used as a safety barrier , i.e. provides functional isolation only, continuous or switched voltages across the barrier up to 3kV are
sustainable. Long term reliability testing at these voltages continues. Peak Inception voltages measured were in excess of 3.5kV when testing for partial discharge in accordance
with IEC 60270. Please contact Murata for further information.
The NXE2 series has been recognised by Underwriters Laboratory to 125Vrms Reinforced Insulation and 250Vrms Basic insulation, please see safety approval section below.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials,
construction and environment. The NXE2 series has a PCB embedded isolated transformer, using FR4 as an insolation barrier between primary and secondary windings. While parts
can be expected to withstand several times the stated test voltage, the isolation capability does depend on the FR4 insulation properties. Any material, including FR4 is susceptible
to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against
repeated high voltage isolation testing, but if it is absolutely required, that the voltage should be reduced by 20% from specified test voltage.
This consideration equally applies to agency recognised parts rated for better than functional isolation where the insulation is always supplemented by a further insulation system
of physical spacing or barriers.
SAFETY APPROVAL
ANSI/AAMI ES60601-1
The NXE2 series is recognised by Underwriters Laboratory (UL) to ANSI/AAMI ES60601-1 and provides 1 MOOP (Means Of Operator Protection) based upon a working
voltage of 250 Vrms max, between Primary and Secondary.
UL 60950
The NXE2 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for reinforced insulation to a working voltage of 125Vrms and for basic insulation to a working
voltage of 250Vrms.
Creepage is 2.5mm and clearance is 2mm
FUSING
The NXE2 Series of converters are not internally fused so to meet the requirements of UL an anti-surge input line fuse should always be used with ratings as defined below.
Input Voltage, 5V 1A
Input Voltage, 12V 400mA
All fuses should be UL recognised, V rated.
RoHS COMPLIANCE AND MSL INFORMATION
This series is compatible with Pb-Free soldering systems and is also backward compatible with Sn/Pb soldering systems.
The NXE2 series can be soldered in accordance with J-STD-020 and have a classification temperature of 260°C and
moisture sensitivity level 2. The termination finish on this product is Gold with plating thickness 0.12 microns.
Murulo Power Solutions 4*sz 2w
NXE2 Series
Isolated 2W Single Output SM DC-DC Converters
KDC_NXE2.C01 Page 3 of 10
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CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1 1µF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC-DC converter
C2 10µF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC-DC converter with an ESR of less
than 100m at 100 kHz
C3 100nF multilayer ceramic capacitor, general purpose
R1 450 resistor, carbon film, ±1% tolerance
R2 50 BNC termination
T1 3T of the coax cable through a ferrite toroid
RLOAD Resistive load to the maximum power rating of the DC-DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
Differential Mode Noise Test Schematic
OSCILLOSCOPE
Y INPUT
SUPPLY
C1 C2 C3 R1 T1 R2
Input Output
DC/DC Converter
R LOAD
+
+
-
-
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KDC_NXE2.C01 Page 4 of 10
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APPLICATION NOTES
Short Circuit Performance
Advisory Notes Minimum Load
The NXE2 series is not hermetically sealed, customers should ensure that parts
are fully dried before input power application.
The minimum load to meet datasheet specification is 10% of the full rated load
across the specified input voltage range. Lower than 10% minimum loading will
result in an increase in output voltage, which may rise to typically double the
specified output voltage if the output load falls to less than 5%.
Capacitive Loading & Start Up
Typical start up times for this series, with a typical input voltage rise time of 2.2µs and output capacitance of 10µF, are shown in the table below. The
product series will start into a capacitance of 47µF with an increased start time, however, the maximum recommended output capacitance is 10µF.
Output Ripple Reduction
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended. The voltage rating should be at least
twice (except for 15V output), the rated output voltage of the DC-DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of the DC-DC converter. At the rated current, the DC resistance of the inductor should
be such that the voltage drop across the inductor is <2% of the rated voltage of the DC-DC converter. The SRF (Self Resonant Frequency) should be >20MHz.
DC
DC
L
CLoad
Power
Source
Inductor Capacitor
L, µH SMD Through Hole C, µF
NXE2S0505MC 22 82223C 15223C 10
NXE2S1205MC 22 82223C 15223C 10
NXE2S1212MC 22 82223C 15223C 10
NXE2S1215MC 22 82223C 15223C 47
Start-up time
µS
NXE2S0505MC 260
NXE2S1205MC 160
NXE2S1212MC 550
NXE2S1215MC 870
Typical Start-Up Wave Form
The NXE2S0505MC offers short circuit protection at low ambient temperatures from -40°C to the temperatures shown in the below graph. The NXE2S12XXMC variants
offer only momentary short circuit protection.
1
10
100
1000
25 35 45 55 65 75 85
Time (seconds)
dĞŵƉĞƌĂƚƵƌĞ;ȗͿ
5V
5.5V
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TOLERANCE ENVELOPES
The voltage tolerance envelopes show typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading and set point accuracy. NXE2S1205MC & NXE2S1212MC output voltage will be outside the tolerance envelope at operating temperature limits.
NXE2S0505MC NXE2S1205MC
NXE2S1212MC NXE2S1215MC
15%
9%
Output Load Current (%)
Output Load Current (%) Output Load Current (%)
Output Load Current (%)
Output Voltage
Output Voltage
Output Voltage Output Voltage
5%
-7%
0%
1%
11%
4%
100
100 100
100
75
75 75
7550
50 50
5025
25 25
25
10
10 10
10
5%
-2%
-6%
2%
6%
-2%
-6%
3%
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EFFICIENCY VS LOAD
NXE2S0505MC NXE2S1205MC
NXE2S1212MC NXE2S1215MC
0
10
20
30
40
50
60
70
80
90
0 102030405060708090100110
Efficiency (%)
Load (%)
0
10
20
30
40
50
60
70
80
90
0 102030405060708090100110
Efficiency (%)
Load (%)
0
10
20
30
40
50
60
70
80
90
0 102030405060708090100110
Efficiency (%)
Load (%)
0
10
20
30
40
50
60
70
80
90
0 102030405060708090100110
Efficiency (%)
Load (%)
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DERATING GRAPHS
NXE2S0505MC NXE2S1205MC
NXE2S1212MC NXE2S1215MC
Load (%)
Temperature (
°C)
0
10
20
30
40
50
60
70
80
90
100
70 75 80 85 90 95 100
Load (%)
Temperature (
°C)
0
10
20
30
40
50
60
70
80
90
100
70 75 80 85 90 95 100
Load (%)
Temperature (
°C)
Load (%)
Temperature (
°C)
0
10
20
30
40
50
60
70
80
90
100
65 70 75 80 85 90 95 100
0
10
20
30
40
50
60
70
80
90
100
75 80 85 90 95 100 105
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EMC FILTERING AND SPECTRA
FILTERING
The following table shows the additional input capacitor and input inductor typically required to meet EN 55022 Curve B Quasi-Peak EMC limit, as shown in the following
plots.
Part Number Capacitor Inductor
NXE2S0505MC 4.7µF 15µH
NXE2S1205MC 4.7µF 15µH
NXE2S1212MC 3.3µF 10µH
NXE2S1215MC 3.3µF 22µH
NXE2S0505MC NXE2S1205MC
NXE2S1212MC NXE2S1215MC
0
10
20
30
40
50
60
70
80
90
100
1.00E+05 1.00E+06 1.00E+07 1.00E+08
dBuV
Frequency (Hz)
0
10
20
30
40
50
60
70
80
90
100
1.00E+05 1.00E+06 1.00E+07 1.00E+08
dBuV
Frequency (Hz)
0
10
20
30
40
50
60
70
80
90
100
1.00E+05 1.00E+06 1.00E+07 1.00E+08
dBuV
Frequency (Hz)
0
10
20
30
40
50
60
70
80
90
100
1.00E+05 1.00E+06 1.00E+07 1.00E+08
dBuV
Frequency (Hz)
DC
DC
C
L
Murulo Power Solutions 12 mm 500]» (7 .52 [0 may ‘ SMA F‘CKUP PO‘NT '7 ] “ , ,,,,, , SEATING PLANE SMA P‘CKUPPOINT \g 7 x5 P‘NS (TOP OF PCB) 316:024[am:00091 ‘1‘ V151“? 100] 1U W 1 \ 3 \ 7 x5 PLACES ‘37[0054] ‘ ‘ may [0410] 14‘ ‘ a ’5“ W Y kaSPLACESOéV [a 074] ——~ 7 .51 [u 300] a 2.54 [0 100] r—ji 7.62 [0300] xi PLACES 2 30 [O 091] 9.40 [0.370] RECOMMENDED \SOLATION BARR‘ER gm 7, x5 PLACES fl 1.00 [o 039] 2 54 [o 100]
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PACKAGE SPECIFICATIONS
Mechanical Dimensions Pin Connections
Pin Function
1 -Vin
3 +Vin
7 -Vout
8 +Vout
14 NA
NA - Not available for electrical connection.
Recommended Footprint Details
All dimensions in mm (inches), Controlling dimension is mm.
Tolerances (unless otherwise stated) ±0.2 (0.008).
Components shown for reference only Weight: 1.1g
Murcia Power Solutions F W 7 ’ ' ‘ ‘ T{it—6%£—<><}>——@1~:b—d)—:¢rl~:¢Hakdfid‘rlrwizbf , ‘ \ ‘ \ L, \ 'Dgi} / 1 1 \ " i+ “gag“ 7 774,77 7 777», 7 774?, ‘u ," EDD DD ‘ ; ‘3“ x ‘ ‘ ‘ ‘ ' 1 1 1 "
NXE2 Series
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Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice. © 2018 Murata Power Solutions, Inc.
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS REEL PACKAGING DETAILS
TAPE OUTLINE DIMENSIONS
13.3 [0.524]#
0.6 0.024
5.0 [0.197]
11.0 [0.433]#
DIRECTION OF UNREELING
1.75 [0.069]
11.5 [0.453]
24.3 [0.957] MAX
4.0 [0.157] 2.0 [0.079]
Ø1.5 +0.1
-0.0
[
Ø0.059 +0.004
-0.000
]
16.0 [0.630]
Ø1.5 [Ø0.059] MIN
22.25 [0.876] MIN
COVER TAPE
3° MAX
3° MAX
]
]
MAX
30.40 [1.197] MAX #
1.50 [0.059]
MIN ##
Ø20.20 [Ø0.795]
MIN
Ø330 [13.000] MAX
OR
Ø177.8 [7.000] MAX
Ø13.0+0.5
-0.2
[
Ø0.512+0.020
-0.008
]
100 [3.937]
MIN
LEADER SECTION
400 [15.748] MIN
GOODS
ENCLOSURE
SECTION
TRAILER SECTION
160 [6.299] MIN
Tape & Reel specifications shall conform with current EIA-481 standard
Unless otherwise stated all dimensions in mm(inches)
Controlling dimension is mm
# Measured at hub
## Six equi-spaced slots on 180mm/7” reel
Tape & Reel specifications shall conform with current EIA-481 standard
Unless otherwise stated all dimensions in mm(inches) ±0.1mm (±0.004 Inches)
Controlling dimension is mm
Components shall be orientated within the carrier tape as indicated
# Measured on a plane 0.3mm above the bottom pocket
Carrier tape pockets shown are
illustrative only - Refer to carrier tape
diagram for actual pocket details.
Reel Quantity: 7” - 180 or 13” - 800

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