A1218XS-2W [MICRODC]
Isolated 2W Dual Output DC/DC Converters; 2W隔离双输出DC / DC转换器
| 型号： | A1218XS-2W |
| 厂家： | 
MICRODC POWER TECHNOLOGY CO., LTD |
| 描述： | Isolated 2W Dual Output DC/DC Converters |
| 文件： | 总4页 (文件大小：1317K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A-X(S)D-2WSeries
Isolated 2W Dual Output DC/DC Converters
SELECTION GUIDE
Input
Output
Current
Efficiency
(%.Typ.)
Isolation
MTTF1
KHrs
Capacitance
Order code
Voltage(VDC)
Nominal
Current (mA)
Voltage
(VDC)
(mA)
MAX
pF
A0505XS-2W
A0509XS-2W
A0512XS-2W
A0515XS-2W
A0518XS-2W
A1205XS-2W
A1209XS-2W
A1212XS-2W
A1215XS-2W
A1218XS-2W
A1505XS-2W
A1512XS-2W
A2405XS-2W
A2412XS-2W
A2415XS-2W
A2418XS-2W
A4805XS-2W
A4809XS-2W
A4812XS-2W
A4815XS-2W
A0505XD-2W
A0509XD-2W
A0512XD-2W
A0515XD-2W
A1205XD-2W
A1209XD-2W
A1212XD-2W
A1215XD-2W
A1505XD-2W
A1512XD-2W
A2405XD-2W
A2412XD-2W
A2415XD-2W
A4805XD-2W
A4809XD-2W
A4812XD-2W
A4815XD-2W
5
500
494
488
476
465
208
201
198
198
190
103
98
±5
±9
±200
±111
±83
80
81
82
84
80
80
83
84
84
82
81
85
82
86
86
85
82
82
85
85
80
81
82
84
80
83
84
84
81
85
80
86
86
82
82
85
85
24
28
30
33
36
35
55
63
66
60
41
75
55
95
104
108
45
74
90
112
24
28
30
33
35
55
63
66
41
75
40
95
104
45
74
90
112
1574
663
338
187
155
490
343
229
148
138
318
249
490
183
127
120
235
195
152
112
1574
663
338
187
490
343
229
148
318
249
157
183
127
235
195
152
112
5
FEATURES
5
±12
±15
±18
±5
◆Footprint from 1.46cm2
5
±67
5
±55
◆I/O isolation voltage 1000VDC
◆Operating Temperature: -40℃～﹢85℃
◆High efficiency up to 86%
12
12
12
12
12
15
15
24
24
24
24
48
48
48
48
5
±200
±111
±83
±9
±12
±15
±18
±5
±67
±55
◆Fully encapsulated toroidal magnetics
◆Internal SMD construction
±200
±111
±200
±83
±12
±5
107
97
◆Power density up to 1.44W/cm3
◆No electrolytic or tantalum capacitors
◆5V,9V,12V and 15V output
±12
±15
±18
±5
97
±67
95
±55
51
±200
±111
±83
51
±9
◆No heatsink required
49
±12
±15
±5
49
±67
◆Dual output from a single input rail
◆UL 94V-0 package material
◆No external components required
◆Industry standard pinout
500
494
488
476
208
201
198
198
103
98
±200
±111
±83
5
±9
5
±12
±15
±5
5
±67
12
12
12
12
15
15
24
24
24
48
48
48
48
±200
±111
±83
±9
◆Power sharing on output
±12
±15
±5
±67
◆MTTF up to 1.5 million hours
±200
±111
±200
±83
±12
±5
MODEL SELECTION
107
97
①
②
③
④
⑤
⑥
A 05 05 X S -2W
±12
±15
±5
97
±67
①Product Series
③Output Voltage
⑤SIP Package
②Input Voltage
④Fixed Input
⑥Rated Power
51
±200
±111
±83
51
±9
49
±12
±15
49
±67
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
APPLICATIONS
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
The A-X(S)D-2W series of industrial temperature
range DC/DC converters are the standard building
blocks for on-board distributed power systems.They are
ideally suited for providing dual rail supplies on primarily
digital boards with the added benefit of galvanic
isolation to reduce switching noise.All of the rated power
may be drawn from a single pin provided the total load
Absolute Maximum Ratings
does not exceed
2 Watt. Pin compatibility with the
Parameter
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Conditions
A-X(S)D-1W series ensures minimal effort in upgrading
distributed power systems.
300℃
300mW
7V
Input voltage V , A05 types
Input voltage Vin, A12 types
15V
Input voltage Vin, A15 types
18V
Input voltage Vin, A24 types
28V
MICRODC RESERVES THE COPYRIGHT
Input voltage Vin, A48 types
54V
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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 4
A-X(S)D-2WSeries
Input Characteristics
Parameter
Conditions
Min.
Typ.
Max.
Units
Continuous operation,5V input types
Continuous operation,12V input types
Continuous operation, 15V input types
Continuous operation,24V input
Continuous operation,48V input
5V input types
4.5
5
5.5
VDC
VDC
10.8
13.5
21.6
43.2
12
13.2
16.5
26.4
52.8
Voltage range
15
VDC
24
VDC
48
VDC
50
mA p-p
mA p-p
mA p-p
mA p-p
12V input types
70
Reflected ripple current
24V input types
130
200
48V input types
Output Specifications
Parameter
Rated Power
Conditions
Min.
Typ.
Max.
Units
2.0
7.5
5
W
%
TA= -40°C to 85°C
A0505XD/A0505XS
All other types
-5
-5
Voltage Set Point Accuracy
%
Line regulation
High VIN to low VIN
High VIN to low VIN
1.0
1.2
1.2
10
%%
%%
%
Line regulation(A24、A48)
10% load to rated load, 5V output types
10% load to rated load, 9V output types
10% load to rated load,12V output types
10% load to rated load,15V output types
BW=DC to 20MHz, 5V output types
BW=DC to 20MHz, 9V output types
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
5
3
10
%
Load regulation
3
10
%
3
10
%
150
100
80
70
200
150
150
150
mV p-p
mV p-p
mV p-p
mV p-p
Ripple＆Noise
Isolation Characteristics
Parameter
Conditions
Min.
Typ.
Max.
Units
Isolation voltage
Resistance
Flash tested for 1 second
Viso= 500VDC
1000
1
VDC
GΩ
10
General Characteristics
Parameter
Conditions
Min.
Typ.
Max.
Units
5V input types
12V input types
95
90
85
80
kHz
kHz
kHz
kHz
Switching frequency
15V input types
Switching frequency(A24、A48)
24V＆48V input types
Temperature Characteristics
Parameter
Conditions
Min.
Typ.
Max.
Units
Specification
All output types
-40
-50
85
℃
℃
℃
℃
Storage
Case temperature rise
above
130
5V output types
12V output types
Free air convection
30
25
ambient
Cooling
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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 4
A-X(S)D-2WSeries
Temperature derating graph
Tolerance envelope
Technical notes
ISOLATION VOLTAGE
"Hi Pot Test","Flash Tested","Withstand 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 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 A 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-acssible 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 greatre degree depending on materials.
Construction and environment. The A 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 for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
Technical 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: Ceramic chip capacitors are recommended. It is required that the ESR(Equivalent Series Resistance)should be as low as possible.X7R 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 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.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 4
A-X(S)D-2WSeries
OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
FOOTPRINT DETAILS
DIP Package
SIP Package
-14 PIN DIP
-7 PIN SIP
Function
Pin
1
Function
Pin
1
-Vin
+Vin
-Vin
7
2
NC
8
4
0V
-Vout
0V
9
5
+Vout
-Vout
+Vin
11
14
6
+Vout
NC - Not available for electrical connection.
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.
All dimensions in inches ±0.01(mm±0.25mm).All pins on a 0.1(2.54) pitch and within ±0.01(0.25)of true position.
Weight: 2.4g (DIP) 2.1g (SIP)
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.
Recommended footprint details
14 PIN DIP Package
7 PIN SIP Package
TUBE OUTLINE DIMENSIONS
14 PIN DIP Tube
7 PIN SIP Tube
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
Tube length (14 Pin DIP) : 20.47 (520mm ±2mm).
Tube length (7 Pin SIP) : 20.47 (520mm ±2mm).
Tube Quantity :25
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 4 of 4
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