B0315XT-1W [MICRODC]
1W, FIXED INPUT, ISOLATED SINGLE OUTPUT SMD DC-DC CONVERTER; 1W,定电压输入,隔离单路输出系列的DC -DC转换器型号: | B0315XT-1W |
厂家: | MICRODC POWER TECHNOLOGY CO., LTD |
描述: | 1W, FIXED INPUT, ISOLATED SINGLE OUTPUT SMD DC-DC CONVERTER |
文件: | 总6页 (文件大小:1327K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
B-XT-1W Series
1W, FIXED INPUT, ISOLATED SINGLE 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
B0303XT-1W
B0305XT-1W
B0309XT-1W
B0312XT-1W
B0315XT-1W
B0503XT-1W
B0505XT-1W
B0505NXT-1W
B0506XT-1W
B0509XT-1W
B0512XT-1W
B0515XT-1W
B1205XT-1W
B1209XT-1W
B1212XT-1W
B1215XT-1W
3.3
3.3
3.3
3.3
3.3
5
410
390
400
400
400
270
294
260
278
267
260
256
124
114
113
111
3.3
5
303
200
111
83
81
83
74
76
81
85
83
86
83
85
74
78
80
80
85
81
29
30
34
40
42
31
33
42
43
38
44
43
50
72
89
100
5348
3847
3134
3473
2473
5515
6857
3933
6677
5501
3957
2747
4683
4008
3121
2316
FEATURES
◆Footprint over pins 1.37cm2
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
66
303
200
200
167
111
83
5
5
5
◆Toroidal magnetics
5
6
5
9
◆Small SMD package with footprint
◆Power density 1.8W/cm3
5
12
15
5
5
66
◆Lead frame technology
12
12
12
12
200
111
83
◆Multi-layer ceramic capacitors
◆Custom solutions available
9
12
15
66
1. Calculated using MIL-HDBK-217FN2 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
①
②
③
④
⑤
⑥
B 05 05 X T -1W
①Product Series
③Output Voltage
⑤SMD Package
②Input Voltage
④Fixed Input
⑥Rated Power
Input Characteristics
Parameter
Voltage range
Start up time
Conditions
Min.
Typ.
Max.
Units
Continuous operation, 3.3V input
Continuous operation, 5V input
Continuous operation, 12V input
2.97
4.5
3.3
5
3.63
5.5
VDC
VDC
10.8
12
30
13.2
47
VDC
APPLICATIONS
The B-XT-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.
mA p-p
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
Switching frequency
All output types
110
kHz
Absolute Maximum Ratings
Parameter
Conditions
MICRODC RESERVES THE COPYRIGHT
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
300℃
600mW
5.5V
Input voltage V , B03 types
Input voltage Vin, B05 types
7V
Input voltage Vin, B12 types
15V
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Page 1 of 6
B-XT-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
1.2
14
%%
%
10% load to rated load, 0303& 0503
10% load to rated load, 0505& 1205
10% load to rated load, 0506
12.8
9.2
8.3
6.8
6.3
40
15
%
10
%
Load regulation1
10% load to rated load, 0509 & 1209
10% load to rated load, 0512& 1212
10% load to rated load, 0515& 1215
BW=DC to 20MHz, 3.3V output types, 0305 & 0505
BW=DC to 20MHz, 3.3V output types,0505 & 1205
BW=DC to 20MHz, 0506
9.0
7.5
7.0
60
%
%
%
mV p-p
mV p-p
mV p-p
mV p-p
mV p-p
mV p-p
62
85
103
49
170
75
Ripple&Noise
BW=DC to 20MHz, 0509& 1209
BW=DC to 20MHz, 0512& 1212
BW=DC to 20MHz, 0515& 1215
39
65
38
76
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
0305, 0309, 0315
0303, 0312, 0503, 0505, 0509, 0512C, 0515
0505, 1205
25
30
43
40
Case temperature
rise above ambient
1209, 1212, 1215
Cooling
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 B-XT-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 specific agency approvals, such as the B-XT-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
B-XT-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 specified 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
B-XT-1W Series
Application Notes
Minimum load
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 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
B0303XT
B0305XT
B0309XT
B0312XT
B0315XT
B0503XT
B0505XT
B0505NXT
437
B0506XT
B0509XT
B0512XT
B0515XT
B1205XT
B1209XT
B1212XT
B1215XT
7200
3146
4960
7740
895
1359
3435
6590
7625
533
2150
3640
7180
1368
721
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
B-XT-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
47
22
10
47
10
47
47
10
22
47
47
47
22
47
47
SMD
Through Hole
11R103C
11R103C
11R223C
11R103C
11R473C
11R103C
11R473C
11R473C
11R103C
11R223C
11R473C
11R473C
11R473C
11R223C
11R473C
11R473C
C,μF
4.7
4.7
2.2
1
B0303XT
B0305XT
B0309XT
B0312XT
B0315XT
B0503XT
B0505XT
B0505NXT
B0506XT
B0509XT
B0512XT
B0515XT
B1205XT
B1209XT
B1212XT
B1215XT
82103C
82473C
82223C
82103C
82473C
82103C
82473C
82473C
82103C
82223C
82473C
82473C
82473C
82223C
82473C
82473C
1
4.7
4.7
4.7
4.7
2.2
1
1
4.7
2.2
1
1
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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Page 4 of 6
B-XT-1W Series
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
SOLDER PAD DIMENSION
Note:
Unit:mm[inch]
Pin section tolerances:±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
Dimensions in [mm], () = Inch
Pin pitch tolerances: ±0.13 (±0.005)
Other tolerances: ±0.25 (±0.01)
Weight: 1.21g
TUBE OUTLINE DIMENSIONS
FOOTPRINT DETAILS
Pin
1
Single
-Vin
+Vin
NA
3
5
7
-Vout
+Vout
NA
8
10
12
14
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 :35
Specifcations 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 datasheet, 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
B-XT-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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