A-XD-1W

A-X(S)D-1WSeries
Isolated 1W Dual Output DC/DC Converters
SELECTION GUIDE
Input
Order code
FEATURES
Footprint from 1.17cm2
◆
I/O isolation voltage 1000VDC
◆
Operating Temperature: -40℃~﹢85℃
◆
High efficiency up to 80%
◆
Fully encapsulated toroidal magnetics
◆
Internal SMD construction
◆
Power density up to 0.85W/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 3.1 million hours
◆
MODEL SELECTION
①
②
③
④
⑤
⑥
A 05 05 X S -1W
①Product Series
③Output Voltage
⑤SIP Package
②Input Voltage
④Fixed Input
⑥Rated Power
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MTTF1
Current
Nominal
MAX
(VDC)
(mA)
pF
KHrs
A0505XS-1W
5
289
±5
±100
69
28
3103
A0509XS-1W
5
267
±9
±55
75
32
2257
A0512XS-1W
5
260
±12
±42
77
34
1579
A0515XS-1W
5
256
±15
±33
78
36
1065
A1205XS-1W
12
120
±5
±100
69
33
2193
A1209XS-1W
12
113
±9
±55
74
46
1734
A1212XS-1W
12
111
±12
±42
75
55
1303
A1215XS-1W
12
110
±15
±33
76
54
932
A1505XS-1W
15
91
±5
±100
71
39
1941
A1512XS-1W
15
87
±12
±42
78
68
790
A2412XS-1W
24
52
±12
±42
80
65
134
A2415XS-1W
24
52
±15
±33
80
95
101
A4805XS-1W
48
30
±5
±100
70
26
206
A4809XS-1W
48
26
±9
±55
80
38
174
A4812XS-1W
48
26
±12
±42
80
52
139
A4815XS-1W
48
26
±15
±33
80
56
104
A0505XD-1W
5
289
±5
±100
69
28
3103
A0509XD-1W
5
267
±9
±55
75
32
2257
A0512XD-1W
5
260
±12
±42
77
34
1579
A0515XD-1W
5
256
±15
±33
78
36
1065
A1205XD-1W
12
120
±5
±100
69
33
2193
A1209XD-1W
12
113
±9
±55
74
46
1734
A1212XD-1W
12
111
±12
±42
75
55
1303
A1215XD-1W
12
110
±15
±33
76
54
932
A1505XD-1W
15
91
±5
±100
71
39
1941
A1512XD-1W
15
87
±12
±42
78
68
790
A2412XD-1W
24
52
±12
±42
80
65
134
A2415XD-1W
24
52
±15
±33
80
95
101
A4805XD-1W
48
30
±5
±100
70
26
206
A4809XD-1W
48
26
±9
±55
80
38
174
A4812XD-1W
48
26
±12
±42
80
52
139
A4815XD-1W
48
26
±15
±33
80
56
104
(%.Typ.)
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
Input Characteristics
Conditions
APPLICATIONS
MICRODC RESERVES THE COPYRIGHT
Isolation
Capacitance
Voltage
Parameter
The A_X(S)D 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 1 Watt.
Efficiency
Current (mA)
◆
◆
Output
Voltage(VDC)
Voltage range
Min.
Max.
Units
5
5.5
VDC
12
13.2
VDC
15
16.5
VDC
21.6
24
26.4
VDC
43.2
48
52.8
VDC
20
40
mA p-p
Continuous operation,5V input
4.5
Continuous operation,12V input
10.8
Continuous operation, 15V input
13.5
Continuous operation,24V input
Continuous operation,48V input
Reflected ripple current
Typ.
Absolute Maximum Ratings
Parameter
Conditions
Lead temperature 1.5mm from case for 10 seconds
300℃
Internal power dissipation
450mW
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-1WSeries
Output Specifications
Parameter
Conditions
Max.
Units
Rated Power
TA= -40°C to 120°C
Min.
Typ.
1.0
W
Rated Power(A24、A48)
TA=0°C to 70°C
1.0
W
Voltage Set Point Accuracy
See tolerance envelope
Line regulation
High VIN to low VIN
1.2
%%
Line regulation(A24、A48)
High VIN to low VIN
1.2
%%
Load regulation(A24、A48)
10% load to rated load, 5V output types
15
%
10% load to rated load,all other output types
10
%
Load regulation(5Vinput、
12Vinput)
Load regulation(15V input)
Ripple&Noise(A24、A48)
1.0
10% load to rated load, 5V output types
10
12.5
%
10% load to rated load, 9V output types
9
10
%
10% load to rated load,12V output types
6.5
7.5
%
10% load to rated load,15V output types
6
7.0
%
10% load to rated load, 5V output types
5.5
10
%
10% load to rated load,12V output types
2.6
3.0
%
10% load to rated load, 15V output types
2.3
3.0
%
150
mV p-p
BW=DC to 20MHz, all input types
Ripple&Noise
BW=DC to 20MHz, 5V output types
10
20
mV p-p
BW=DC to 20MHz, 9V output types
7
15
mV p-p
BW=DC to 20MHz, 12V output types
7.5
15
mV p-p
BW=DC to 20MHz, 15V output types
8
15
mV p-p
Isolation Characteristics
Parameter
Conditions
Min.
Isolation voltage
Flash tested for 1 second
1000
Typ.
Max.
Units
Resistance
Viso= 1000VDC
Resistance(A24、A48)
Viso= 500VDC
10
Parameter
Conditions
Min.
5V input types
110
kHz
Switching frequency
12V input types
140
kHz
15V input types
90
kHz
All input types
100
kHz
VDC
10
GΩ
GΩ
General Characteristics
Switching frequency(A24、A48)
Typ.
Max.
Units
Temperature Characteristics
Parameter
Conditions
Min.
Max.
Units
Specification
A05、A12、A15
-40
85
℃
Specification
A24、A48
0
70
℃
Storage
A05、A12、A15
-50
130
℃
Storage
A24、A48
-55
150
℃
Case temperature rise
0505,1205
33
℃
0509,0512,0515,1209,1212,1215
28
℃
1505
26
℃
ambient
1512,1515
17
℃
Cooling
Free air convection
above
Tolerance envelope
O u tp u t P o w e r (W )
Temperature derating graph
5V & 12V Input
24V & 48V Input
7 0° c 8 5° c
Ambient Temperature (
http://www.microdc.cn
Typ.
C)
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 4
A-X(S)D-1WSeries
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.
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
C2
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
100nF multilayer ceramic capacitor, general purpose
R1
450Ω resistor, carbon fi lm, ±1% tolerance
R2
50Ω BNC termination
T1
3T of the coax cable through a ferrite toroid
RLOAD
R3
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
50Ω resistor, carbon film,±1%
Measured values are multiplied by 10 to obtain the specified values.
Differential Mode Noise Test Schematic
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Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 3 of 4
A-X(S)D-1WSeries
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
DIP Package
FOOTPRINT DETAILS
SIP Package
-14 PIN DIP
Pin
1
7
8
9
11
14
-7 PIN SIP
Function
-Vin
NC
0V
+Vout
-Vout
+Vin
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.
2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
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.
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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7 PIN SIP Tube
Tube length (14 Pin DIP) : 20.47 (520mm ±2mm).
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