A0315NXT-1W [MICRODC]
1W, FIXED INPUT, ISOLATED DUAL OUTPUT SMD DC-DC CONVERTER; 1W，定电压输入，隔离双输出系列的DC -DC转换器
| 型号： | A0315NXT-1W |
| 厂家： | 
MICRODC POWER TECHNOLOGY CO., LTD |
| 描述： | 1W, FIXED INPUT, ISOLATED DUAL OUTPUT SMD DC-DC CONVERTER |
| 文件： | 总6页 (文件大小：1164K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A-NXT-1W Series
1W, FIXED INPUT, ISOLATED DUAL OUTPUT SMD DC-DC CONVERTER
SELECTION GUIDE
Efficiency
(%.Typ.)
Input
Output
Isolation
Capacitance
pF
MTTF1
KHrs
Voltage(VDC)
Nominal
Order code
Current (mA)
Voltage
(VDC)
Current
(mA)
Rated Load
A0303NXT-1W
A0305NXT-1W
A0309NXT-1W
A0312NXT-1W
A0315NXT-1W
A0503NXT-1W
A0505XT-1W
3.3
3.3
3.3
3.3
3.3
5
402
388
405
390
392
259
290
251
267
260
256
121
113
111
110
±3.3
±5
±152
±100
±55
81
83
74
76
81
85
83
86
85
74
78
80
80
85
81
29
30
34
40
42
31
33
42
38
44
43
50
72
89
100
1005
399
827
375
206
964
1697
367
682
343
188
559
375
243
154
FEATURES
◆Footprint over pins 1.64cm2
±9
◆Short Circuit Protection(automatic recovery)
◆I/O isolation voltage 1000VDC
◆Operating Temperature: -40℃～﹢85℃
◆High efficiency up to 78%
±12
±15
±3.3
±5
±42
±33
±152
±100
±100
±55
5
A0505NXT-1W
A0509NXT-1W
A0512NXT-1W
A0515NXT-1W
A1205NXT-1W
A1209NXT-1W
A1212NXT-1W
A1215NXT-1W
5
±5
◆Toroidal magnetics
5
±9
5
±12
±15
±5
±42
◆Small SMD package with footprint
◆Power density 1.36W/cm3
5
±33
12
12
12
12
±100
±55
◆Lead frame technology
±9
◆Multi-layer ceramic capacitors
◆Custom solutions available
±12
±42
±15
±33
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
All specifications typical at TA=25℃, nominal input voltage and rated output current unless otherwise specified.
MODEL SELECTION
⑦
A 05 05 N X T -1W
①
②
③
④
⑤
⑥
Input Characteristics
Parameter
Voltage range
Start up time
Conditions
Min.
Typ.
Max.
Units
①Product Series
③Output Voltage
⑤Fixed Input
②Input Voltage
④No Pin
⑥SMD Package
Continuous operation, 3V input
Continuous operation, 5V input
Continuous operation, 12V input
2.97
4.5
3.3
5
3.63
5.5
VDC
VDC
⑦Rated Power
10.8
12
41
13.2
50
VDC
mA p-p
APPLICATIONS
The A-NXT-1W series are miniature,1W
DC/DC converters with high isolation in a
SMD package. With a new package design
these converters are qualified for the higher
temperatures requested by lead-free reflow
solder processes. With the small footprint,
these converters are the ideal solution for
board level power distribution,mainly for
applications in the industrial and telecom field.
For automated SMD production lines the
devices can be supplied in standard tape and
reel package.
Isolation Characteristics
Parameter
Conditions
Min.
Typ.
Max.
Max.
Units
Isolation voltage
Resistance
Flash tested for 1 second
Viso= 1000VDC
1000
10
VDC
GΩ
General Characteristics
Parameter
Conditions
Min.
Typ.
Units
0312, 0315
100
110
115
kHz
kHz
kHz
Switching frequency
0303, 0305, 0503, 0505
All other variants
Absolute Maximum Ratings
Parameter
Conditions
MICRODC RESERVES THE COPYRIGHT
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
300℃
700mW
5.5V
Input voltage V , A03 types
Input voltage Vin, A05 types
7V
Input voltage Vin, A12 types
15V
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Page 1 of 6
A-NXT-1W Series
Output Specifications
Parameter
Conditions
Min.
Typ.
Max.
Units
Rated Power
Voltage Set Point
Line regulation
TA=-40°C to 85°C
See tolerance envelope
0.1
1.0
W
High VIN to low VIN
1.0
10
10
9.0
6.5
11
1.2
15
%%
%
10% load to rated load, 0303& 0503
10% load to rated load, 5V output types
10% load to rated load, 0309
12
%
10
%
Load regulation1
10% load to rated load, 0509 & 1209
10% load to rated load, 0312 & 0315
10% load to rated load, 0512 & 1212
10% load to rated load, 0515 & 1215
BW=DC to 20MHz, 3.3V output types, A0305 & A0505
BW=DC to 20MHz, all other 5V output types
BW=DC to 20MHz, 9V output types
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
8.0
14
%
%
6.0
6.0
40
50
35
50
65
8.5
7.0
80
%
%
mV p-p
mV p-p
mV p-p
mV p-p
mV p-p
100
80
Ripple＆Noise
110
110
Note:1、12V input types have typically 3% less load regulation change.
Temperature Characteristics
Parameter
Conditions
Min.
Typ.
Max.
Units
Specification
Storage
All output types
-40
-55
85
℃
℃
℃
℃
℃
℃
125
Case temperature rise
0305, 0505, 0312, 0315
0303, 0309, 0503
0505, 1205
19
25
46
35
above
ambient
Cooling
All other variants
Free air convection
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.
Professional Power Module A-NXT-1W series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC 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 speciffic agency approvals, such as the A-NXT-1W 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 A-NXT-1W series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While parts can be expected to withstand several times the
stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) 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 be
reduced by 20% from speciffied test voltage.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing
or barriers.
Temperature derating graph
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Page 2 of 6
A-NXT-1W Series
Application Notes
Minimum load
The minimum load to meet data sheet 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 and 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.
Start-up time
μs
Start-up time
μs
A0303NXT
A0305NXT
A0309NXT
A0312NXT
A0315NXT
A0503NXT
A0505NXT
A0305NXT
1630
A0509NXT
A0512NXT
A0515NXT
A1205NXT
A1209NXT
A1212NXT
A1215NXT
6850
1359
11560
15640
1154
3435
6590
25340
1599
4050
7995
2185
11200
1395
Ripple & Noise Characterization Method
Ripple and noise measurements are performed with the following test configuration.
C1
C2
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
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 100mΩ at 100 kHz
C3
R1
100nF multilayer ceramic capacitor, general purpose
450Ω resistor, carbon fi lm, ±1% tolerance
R2
50Ω 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
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Page 3 of 6
A-NXT-1W Series
Application Notes
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.
Inductor
Capacitor
L,μH
10
SMD
Through Hole
11R103C
11R223C
11R223C
11R473C
11R474C
11R103C
11R103C
11R103C
11R103C
11R223C
11R473C
11R474C
11R223C
11R473C
11R474C
C,μF
4.7
2.2
2.2
1
A0303NXT
A0305NXT
A0309NXT
A0312NXT
A0315NXT
A0503NXT
A0505NXT
A0305NXT
A0509NXT
A0512NXT
A0515NXT
A1205NXT
A1209NXT
A1212NXT
A1215NXT
82103C
82223C
82223C
82473C
82474C
82103C
82103C
82103C
82223C
82473C
82474C
82103C
82223C
82473C
82474C
22
22
47
220
10
0.22
4.7
4.7
4.7
2.2
1
10
10
22
47
220
10
0.22
4.7
2.2
1
22
47
220
0.22
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.
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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 4 of 6
A-NXT-1W Series
OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
SOLDER PAD DIMENSION
Note:
Unit:mm[inch]
Dimensions in [mm], () = Inch
Pin section tolerances:±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
Pin pitch tolerances: ±0.13 (±0.005)
Other tolerances: ±0.25 (±0.01)
Weight: 1.53g
FOOTPRINT DETAILS
TUBE OUTLINE DIMENSIONS
Pin
1
Dual
-Vin
+Vin
0V
3
7
9
-Vout
NA
10
12
16
18
+Vout
NA
NA
NA - Not available for electrical connection.
Unless otherwise stated all dimensions in mm±0.5 (inches ±0.02).
Tube length : 475±2.0 (18.70±0.07).
Tube Quantity :25
Specif cations can be changed any time without notice.
No parallel connection or plug and play.
Note:
1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically.
2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise
specified.
4. In this data sheet, all the test methods of indications are based on corporate standards.
5. Only typical models listed, other models may be different, please contact our technical person for more details.
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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 5 of 6
A-NXT-1W Series
Tape & Reel Specifications
Reel Packaging Details
Product Orientation
Pin 1, located nearest to carrier drive sprocket.
Reel Quantity : 500
Reel Outline Dimensions
Tape Outline Dimensions
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C
for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte
Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are
backward compatible with Sn/Pb soldering systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646 E-mail:tech@microdc.cn
Website:http://www.microdc.cn
Microdc Professional Power module,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. Specifications are subject to change without notice.
©2010 Microdc Professional Power Module, Inc. Guangzhou
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has harmful chemical
substances through the registration, inspection and approval.
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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 6 of 6
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