NXE1 Series

NXE1 Series
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Isolated 1W Single Output SM DC/DC Converters
Isolation
Capacitance
mA
%
%
mVp-p
mVp-p
%
%
pF
kHrs
5
200
7.8
10
28
50
65
69
8
6384
MTTF2
Efficiency (Typ)
V
5
Efficiency (Min)
Output Ripple
& Noise (Max)
Load Regulation
(Typ)
V
NXE1S0505MC
Output Current
Output Ripple
& Noise (Typ)
･･Patents pending
Load Regulation
(Max)
FEATURES
Output Voltage
Order Code1
Nominal Input
Voltage
SELECTION GUIDE
･･Lower Profile
INPUT CHARACTERISTICS
･･UL60950 Recognition pending
Parameter
Conditions
Min.
Typ.
Max.
Units
Continuous operation, 5V input types
4.5
･･UL60601 Recognition pending
Voltage range
Reflected ripple current
5.0
7.5
5.5
15
V
mA p-p
･･3kVDC Isolation “Hi Pot Test”
ISOLATION CHARACTERISTICS
･･Substrate Embedded Transformer
Parameter
Conditions
Min.
Typ.
Max.
Units
Isolation voltage
Resistance
Flash tested for 1 second
Viso= 1000VDC
3000
10
･･Automated Manufacture
･･Industry Standard Footprint
･･Momentary Short Circuit Protection
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
Switching frequency
All output types
Min.
Typ.
Max.
120
Units
kHz
OUTPUT CHARACTERISTICS
PRODUCT OVERVIEW
The NXE1 series is a new range of low cost, lower
profile, fully automated manufacture surface
mount DC/DC converters. The NXE1 series
automated manufacturing process with substrate
Embedded Transformer, offers increased product
reliability and repeatability of performance in a
halogen free, iLGA inspectable package. The NXE1
series, industry standard footprint is compatible
with existing designs.
Parameter
Conditions
Rated power
Voltage set point accuracy
Line regulation
TA=-40°
C to 85°
C
See tolerance envelope
High VIN to low VIN
Min.
Typ.
Max.
Units
1.0
W
1.1
1.2
% /%
Typ.
Max.
Units
85
125
°
C
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
Product temperature rise above ambient
Cooling
All output types
-40
-50
All output types
Free air convection
ABSOLUTE MAXIMUM RATINGS
Input voltage VIN, NXE1S05 types
For full details go to
www.murata-ps.com/rohs
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7V
1. Components are supplied in tape and reel packaging, please refer to package specification section.
2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
C, nominal input voltage and rated output current unless otherwise specified.
All specifications typical at TA= 25°
All enquiries: www.murata-ps.com/support
KDC_ NXE1.A01 Page 1 of 6
NXE1 Series
Isolated 1W Single Output SM DC/DC Converters
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 NXE1 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 3kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
For a part holding no specific agency approvals, such as the NXE1 series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or
60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part
could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must
be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to
safety standard requirements.
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 NXE1 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 recognized parts rated for better than functional isolation where the insulation is always supplemented by a further insulation system
of physical spacing or barriers.
RoHS COMPLIANCE, MSL AND PSL INFORMATION
This series is compatible with RoHS soldering systems and is also backward compatible with Sn/Pb soldering systems.
The pin termination finish on this product series is Gold with nickel pre-plate.
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KDC_ NXE1.A01 Page 2 of 6
NXE1 Series
Isolated 1W Single Output SM DC/DC Converters
TOLERANCE ENVELOPES
The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading.
NXE1S0505MC
Output Voltage
10%
5%
3%
-4%
10
100
75
50
25
Output Load Current (% )
EFFICIENCY VS LOAD
NXE1S0505MC
80
70
Efficiency (%)
60
50
40
NXE1S0505MC
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
TEMPERATURE DERATING GRAPH
NXE1S0505MC
Output Power (W)
1.5
1.0
0.5
0
-40
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85°
C
Safe Operating Area
100
50
0
Ambient Temperature (°
C)
150
All enquiries: www.murata-ps.com/support
KDC_ NXE1.A01 Page 3 of 6
NXE1 Series
Isolated 1W Single Output SM DC/DC Converters
APPLICATION NOTES
Advisory Notes
Minimum Load
The NXE1 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% .
The NXE1 has been tested to the following standards, which should not be
exceeded for shock and vibration:
BS EN 60068-2-64:2008 (Vibration Broadband Random)
BS EN 60068-2-27:2009 (Mechanical Shock)
Capacitive Loading & Start Up
Typical start up times for this series, with a typical input voltage rise time of 2.2μ
s and output capacitance of 10μ
F, are shown in the table below. The
product series will start into a capacitance of 47μ
F with an increased start time, however, the maximum recommended output capacitance is 10μ
F.
Typical Start-Up Wave Form
NXE1S0505MC
Start-up time
μ
S
330
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.
L
L, μ
H
NXE1S0505MC
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Inductor
SMD
Through Hole
Capacitor
C, μ
F
Power
Source
DC
C
Load
DC
All enquiries: www.murata-ps.com/support
KDC_ NXE1.A01 Page 4 of 6
NXE1 Series
Isolated 1W Single Output SM DC/DC Converters
PACKAGE SPECIFICATIONS
Mechanical Dimensions
Pin Connections
12.70 [0.500]
(7.62 [0.300])
SMA PICKUP POINT
Pin
Function
1
3
7
8
14
-Vin
+Vin
-Vout
+ Vout
NA
NA - Not available for electrical connection.
S
4.80 [0.189] MAX
SEATING PLANE
SMA PICKUP POINT
0.1 (0.004) S x5 PINS
2.54 [0.100]
(TOP OF PCB)
[ ]
3.40 0.134
2.80 0.110
1
3
7
7.37 [0.290]
10.41 [0.410]
14
8
7.62 [0.300]
2.54 [0.100]
All dimensions in mm ±0.25mm (inches ±0.01). All pins on a 2.54 (0.1) pitch and within ±0.25 (0.01) of true position.
Weight: 1 g
Recommended Footprint Details
7.62 [0.300]
x5 PLACES
2.30 [0.091]
9.40 [0.370]
x5 PLACES
1.00 [0.039]
2.54 [0.100]
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All enquiries: www.murata-ps.com/support
KDC_ NXE1.A01 Page 5 of 6
NXE1 Series
Isolated 1W Single Output SM DC/DC Converters
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS
TAPE OUTLINE DIMENSIONS
22.3 [0.876] MIN
[
]
3°MAX
Ø332 [13.071] MAX
OR
Ø180 [7.087] MAX
Ø13.50 Ø 0.531
12.80 0.504
13.3 [0.525]#
]
0.6 0.024 MAX
0.3 0.012
]
30.40 [1.197] MAX #
DIRECTION OF UNREELING
Ø1.5+-0.1
0.0
0.004
]
[Ø0.059 +-0.000
1.50 [0.059]
MIN ##
16.0 [0.630]
11.0 [0.433]#
Ø1.5 [Ø0.059] MIN
2.0 [0.079]
3°MAX
Ø20.20 [Ø0.795]
MIN
4.0 [0.157]
COVER TAPE
1.75 [0.069]
11.5 [0.453]
24.0 [0.945] MAX
5.0 [0.197]
REEL PACKAGING DETAILS
LEADER SECTION
400 [15.748] MIN
GOODS
ENCLOSURE
SECTION
TRAILER SECTION
160 [6.299] MIN
100 [3.937]
MIN
Product Orientation
Pin 1, located nearest to
carrier drive sprocket.
Reel Quantity: 7” - 420 13” -1000
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
w w w.m urata-p s.com /sup p ort
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/
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.
© 2014 Murata Power Solutions, Inc.
All enquiries: www.murata-ps.com/support
KDC_ NXE1.A01 Page 6 of 6
Murata Power Solutions社（MPS社）製品の取り扱い上の注意
1．製品の運搬時、電子部品等に力を加えたり、力が加わる様な作業をしないで下さい。
2．以下のような環境条件では絶縁劣化を引き起こす危険性がありますので、設置及び保管しないでください。
・本仕様書の規格外の高温，高湿の保存や直射日光の当たるところ。
･腐食性ガス雰囲気（Cl2、H2S、NH3、SO2、NOX等）。
・水、油、有機溶剤等の液体がかかるところ。
・塵埃の多いところ。
・その他、上記に準ずるところ。
3．低分子シロキサン（ジメチルポリシロキサン）含有率の高いシリコンゴム、シリコンボンド等の使用により、ボリウ
ムやポテンショメータ摺動子やスイッチ類の接点の接触不良が発生する場合があります。低分子シロキサン含
有率は０．１％以下のものをご使用ください。
4．製品に使用されている個々の部品は、周囲温度により、その信頼性と寿命（MTBF）は極端に短くなります。当
データシートに定められている温度条件の範囲内で使用してください。
お願い
1. 本データシートは特に規定しない限り、電源単体での品質を規定するものです。ご使用に際しては御社製品
に実装された状態で必ず評価、確認をして下さい。
2. 当製品に万が一異常や不具合が生じた場合でも、２次災害防止の為に、完成品に適切なフェールセーフ機
能を必ず付加して下さい。
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理由により、高信頼性が要求される以下の用途でのご使用をご検討の場合、又は、当データシートに記載され
た用途以外でのご使用をご検討の場合は、必ず事前に弊社営業部又は最寄りの営業所までご連絡下さい。
①航空機器 ②宇宙機器 ③海底機器 ④発電所制御機器 ⑤防災/防犯機器 ⑥交通用信号機器
⑦ 輸送機器(自動車､列車､船舶等) ⑧医療機器 ⑨情報処理機器 ⑩その他上記機器と同等の機器
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してはご確認下さい。記載内容にご不明の点がございましたら、弊社営業部までお問い合わせ下さい。
5. 製品によっては、お守りいただかないと発煙、発火等に至る可能性のある定格や注意(保管・使用環境、定格
上の注意、実装上の注意、取扱上の注意)を記載しておりますので、必ずご覧下さい。
6. 当データシートに記載の製品の使用もしくは当データシートに記載の情報の使用に際して、当社もしくは第三
者の知的財産権その他の権利にかかわる問題が発生した場合は、当社はその責を負うものではありません。ま
た、これらの権利の実施権の許諾を行うものではありません。
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出する場合、同法に基づく輸出許可が必要です。
8. MPS 社の製造工程では、モントリオール議定書で規制されているオゾン層破壊物資(ODS)は一切使用しており
ません。

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