A-XD-2W

A-X(S)D-2WSeries
Isolated 2W Dual Output DC/DC Converters
SELECTION GUIDE
Input
Order code
FEATURES
2
Footprint from 1.46cm
◆
I/O isolation voltage 1000VDC
◆
Operating Temperature: -40℃~﹢85℃
◆
High efficiency up to 86%
◆
Fully encapsulated toroidal magnetics
◆
Internal SMD construction
◆
Power density up to 1.44W/cm3
◆
No electrolytic or tantalum capacitors
◆
5V,9V,12V and 15V output
◆
No heatsink required
◆
Dual output from a single input rail
◆
UL 94V-0 package material
◆
No external components required
◆
Industry standard pinout
◆
Power sharing on output
MTTF up to 1.5 million hours
MODEL SELECTION
①
②
③
④
⑤
⑥
A 05 05 X S -2W
①Product Series
③Output Voltage
⑤SIP Package
②Input Voltage
④Fixed Input
⑥Rated Power
Voltage
Current
Nominal
MAX
(VDC)
(mA)
A0505XS-2W
5
500
±5
±200
A0509XS-2W
5
494
±9
±111
A0512XS-2W
5
488
±12
A0515XS-2W
5
476
A0518XS-2W
5
A1205XS-2W
Isolation
Capacitance
(%.Typ.)
MTTF1
pF
KHrs
80
24
1574
81
28
663
±83
82
30
338
±15
±67
84
33
187
465
±18
±55
80
36
155
12
208
±5
±200
80
35
490
A1209XS-2W
12
201
±9
±111
83
55
343
A1212XS-2W
12
198
±12
±83
84
63
229
A1215XS-2W
12
198
±15
±67
84
66
148
A1218XS-2W
12
190
±18
±55
82
60
138
A1505XS-2W
15
103
±5
±200
81
41
318
A1512XS-2W
15
98
±12
±111
85
75
249
A2405XS-2W
24
107
±5
±200
82
55
490
A2412XS-2W
24
97
±12
±83
86
95
183
A2415XS-2W
24
97
±15
±67
86
104
127
A2418XS-2W
24
95
±18
±55
85
108
120
A4805XS-2W
48
51
±5
±200
82
45
235
A4809XS-2W
48
51
±9
±111
82
74
195
A4812XS-2W
48
49
±12
±83
85
90
152
A4815XS-2W
48
49
±15
±67
85
112
112
A0505XD-2W
5
500
±5
±200
80
24
1574
A0509XD-2W
5
494
±9
±111
81
28
663
A0512XD-2W
5
488
±12
±83
82
30
338
A0515XD-2W
5
476
±15
±67
84
33
187
A1205XD-2W
12
208
±5
±200
80
35
490
A1209XD-2W
12
201
±9
±111
83
55
343
A1212XD-2W
12
198
±12
±83
84
63
229
A1215XD-2W
12
198
±15
±67
84
66
148
A1505XD-2W
15
103
±5
±200
81
41
318
A1512XD-2W
15
98
±12
±111
85
75
249
A2405XD-2W
24
107
±5
±200
80
40
157
A2412XD-2W
24
97
±12
±83
86
95
183
A2415XD-2W
24
97
±15
±67
86
104
127
A4805XD-2W
48
51
±5
±200
82
45
235
A4809XD-2W
48
51
±9
±111
82
74
195
A4812XD-2W
48
49
±12
±83
85
90
152
A4815XD-2W
48
49
±15
±67
85
112
112
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
does not exceed 2 Watt. Pin compatibility with the
A-X(S)D-1W series ensures minimal effort in upgrading
distributed power systems.
MICRODC RESERVES THE COPYRIGHT
http://www.microdc.cn
Efficiency
Current (mA)
◆
◆
Output
Voltage(VDC)
Absolute Maximum Ratings
Parameter
Conditions
Lead temperature 1.5mm from case for 10 seconds
300℃
Internal power dissipation
300mW
Input voltage V , A05 types
7V
Input voltage Vin, A12 types
15V
Input voltage Vin, A15 types
18V
Input voltage Vin, A24 types
28V
Input voltage Vin, A48 types
54V
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 1 of 4
A-X(S)D-2WSeries
Input Characteristics
Parameter
Voltage range
Conditions
Min.
Typ.
Max.
Units
Continuous operation,5V input types
4.5
5
5.5
VDC
Continuous operation,12V input types
10.8
12
13.2
VDC
Continuous operation, 15V input types
13.5
15
16.5
VDC
Continuous operation,24V input
21.6
24
26.4
VDC
Continuous operation,48V input
43.2
48
52.8
5V input types
Reflected ripple current
VDC
50
mA p-p
12V input types
70
mA p-p
24V input types
130
mA p-p
48V input types
200
mA p-p
Output Specifications
Parameter
Conditions
Rated Power
TA= -40°C to 85°C
Voltage Set Point Accuracy
Line regulation
Min.
Typ.
2.0
W
-5
7.5
%
All other types
-5
5
%
1.2
%%
1.0
High VIN to low VIN
Load regulation
Ripple&Noise
Units
A0505XD/A0505XS
High VIN to low VIN
Line regulation(A24、A48)
Max.
1.2
%%
10% load to rated load, 5V output types
5
10
%
10% load to rated load, 9V output types
3
10
%
10% load to rated load,12V output types
3
10
%
10% load to rated load,15V output types
3
10
%
BW=DC to 20MHz, 5V output types
150
200
mV p-p
BW=DC to 20MHz, 9V output types
100
150
mV p-p
BW=DC to 20MHz, 12V output types
80
150
mV p-p
BW=DC to 20MHz, 15V output types
70
150
mV p-p
Isolation Characteristics
Parameter
Conditions
Min.
Isolation voltage
Flash tested for 1 second
1000
Typ.
Resistance
Viso= 500VDC
1
10
Conditions
Min.
Typ.
Max.
Units
VDC
GΩ
General Characteristics
Parameter
Switching frequency
Switching frequency(A24、A48)
Max.
Units
5V input types
95
kHz
12V input types
90
kHz
15V input types
85
kHz
24V&48V input types
80
kHz
Temperature Characteristics
Parameter
Conditions
Min.
Max.
Units
Specification
All output types
-40
Typ.
85
℃
-50
130
℃
Storage
Case temperature rise
above
ambient
5V output types
30
℃
12V output types
25
℃
Cooling
Free air convection
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Technical Enquiries-Email:[email protected] 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.
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Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 3 of 4
A-X(S)D-2WSeries
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
DIP Package
FOOTPRINT DETAILS
-14 PIN DIP
SIP Package
Pin
Function
-Vin
NC
0V
+Vout
-Vout
+Vin
1
7
8
9
11
14
-7 PIN SIP
Pin
Function
1
+Vin
-Vin
-Vout
0V
+Vout
2
4
5
6
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±
0.01(mm±0.25mm).All pins on a 0.1(2.54) pitch and within ±0.01(0.25)of true position.
2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
Weight: 2.4g (DIP) 2.1g (SIP)
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
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
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Tube length (14 Pin DIP) : 20.47 (520mm ±2mm).
7 PIN SIP Tube
Tube length (7 Pin SIP) : 20.47 (520mm ±2mm).
Tube Quantity :25
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 4 of 4
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