DC/DC Converter
A_(X)T-1W series
1w, Fixed input, isolated & unregulated dual output
FEATURES
Efficiency up to 79%
Operating Temperature Range: -40℃ ~ +85℃
Isolation voltage: 1K VDC
SMD Package
Internal surface mounted design
International standard pin-out
Patent Protection
RoHS
A_(X)T-1W series is specially designed for applications where an isolated voltage is required in a distributed power supply system. It is suitable
for:
1.Where the voltage of the input power supply is stable (voltage variation: ±10%Vin);
2.Where isolation is necessary between input and output (isolation voltage
≤1000VDC);
3.Where do not has high requirement of line regulation , load regulation and the ripple & noise of the output voltage;
Such as: pure digital circuits, low frequency analog circuits, and IGBT power device driving circuits.
Selection Guide
Input Voltage (VDC)
Part No.
Nominal
(Range)
A0305XT-1W
A0312T-1W
A0315T-1W
A0505(X)T-1W
A0509(X)T-1W
A0512(X)T-1W
A0515(X)T-1W
A1205(X)T-1W
A1209(X)T-1W
A1212(X)T-1W
A1215(X)T-1W
A1515(X)T-1W
A2405(X)T-1W
A2409T-1W
A2412(X)T-1W
A2415(X)T-1W
A2424(X)T-1W
24
(21.6-26.4)
15
(13.5-16.5)
12
(10.8-13.2)
5
(4.5-5.5)
3.3
(2.97-3.63)
Output Voltage
(VDC)
±5
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±15
±5
±9
±12
±15
±24
Output
Output Current
(mA)(Max./Min.)
±100/±10
±42/±4.2
±33/±3.3
±100/±10
±56/±5.6
±42/±4.2
±33/±3.3
±100/±10
±56/±5.6
±42/±4.2
±33/±3.3
±33/±3.3
±100/±10
±56/±5.6
±42/±4.2
±33/±3.3
±21/±2.1
Efficiency
(%,
Min./T
yp.)
@ Full Load
67/71
75/79
75/79
67/71
73/77
74/78
74/78
67/71
69/73
70/74
70/74
75/79
68/72
70/74
72/76
73/77
74/78
UL
100
UL
UL
UL
UL
UL
UL
UL
UL
Max.
Capacitive
Load
(μF)
Certification
Notes: 1. The A_XT-1W series have no 3,6,8,9 pin. For example A0505XT-1W.
2. The capacitive loads of positive and negative outputs are identical.
Input Specifications
Item
Operating Conditions
3.3Vinput
5V input
Input Current (full load / no-load)
12V input
15V input
24V input
3.3V input
Surge Voltage (1sec. max.)
5V input
12V input
Min.
--
--
--
--
--
-0.7
-0.7
-0.7
Typ.
420/40
250/30
110/20
80/11
57/7
--
--
--
Max.
--
--
--
--
--
5
9
18
VDC
mA
Unit
2014.05.20-B/4
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_(X)T-1W series
Surge Voltage (1sec. max.)
Input Filter
15V input
24V input
-0.7
-0.7
--
--
21
30
VDC
Capacitor filter
Output Specifications
Item
Output Voltage Accuracy
Line Regulation
Input voltage change: ±1%
5VDC output
9VDC output
Load Regulation
10%-100% load
12VDC output
15VDC output
24VDC output
Ripple & Noise*
Temperature Drift Coefficient
Output Short Circuit Protection
20MHz bandwidth
100% load
--
--
--
--
--
--
--
--
Operating Conditions
Min.
--
Typ.
--
12
8
7
6
5
50
--
--
Max.
±1.2
--
--
--
--
--
75
±0.03
1
mVp-p
%/℃
s
%
Unit
--
See tolerance envelope graph (Fig. 1)
Note: 1.Dual output models unbalanced load: ±5%.
2.Ripple and noise tested with “parallel cable” method, please see
DC-DC Converter Application Notes
for specific operation methods.
3.Supply voltage must be discontinued at the end of short circuit duration.
General Specifications
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Operating Temperature
Storage Temperature
Casing Temperature Rise
Pin Welding Resistance Temperature
Reflow Soldering Temperature
Storage Humidity
Switching Frequency
MTBF
Non-condensing
100% load, nominal input voltage(3.3V/5V/12V)
100% load, nominal input voltage(15V/24V)
MIL-HDFK-217F@25℃
Ta=25℃
Welding spot is 1.5mm away from the casing,
10 seconds
Operating Conditions
Input-output, with the test time of 1 minute and
the leak current lower than 1mA
Input-output, isolation voltage 500VDC
Input-output, 100KHz/0.1V
A2424(X)T-1W
Other models
Min.
1000
1000
--
--
-40
-55
--
--
Typ.
--
--
100
30
--
--
25
--
Max.
--
--
--
--
85
125
--
300
℃
Unit
VDC
MΩ
pF
Derating if the temperature
≥85℃
(see Fig. 2)
Peak temp.≤245℃, maximum duration time≤60s
at 217℃. For actual application, please refer to
IPC/JEDEC J-STD-020D.1.
--
--
--
3500
--
100
500
--
95
--
--
--
%
KHz
K hours
Physical Specifications
Casing Material
Package Dimensions
Weight
Cooling Method
Black flame-retardant heat-proof epoxy resin (UL94-V0)
15.24*11.20*6.50 mm
1.7 g(Typ.)
Free air convection
EMC Specifications
EMI
EMS
Conducted disturbance
Electrostatic discharge
CISPR22/EN55022
IEC/EN61000-4-2
CLASS A (see Fig. 5 for recommended circuit)
Contact
±6KV
perf. Criteria B
2014.05.20-B/4
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_(X)T-1W series
Product Characteristic Curve
+10%
+5%
Rated
Output
Voltage
Output Voltage
Accuracy
(%)
Output Pow er Per centage(%)
Tolerance Envelope Curve
Ty pic a
l L o ad
Temperatu re D erating Graph
120
100
80
60
40
20
0
-40
40
85 105 120
0
Ambi ent Temperature(
℃
)
Safe Operati ng Area
Li n e
+2.5%
-2.5%
-7.5%
50
70
100
Output Current Percent(%)
(Nominal Input Voltage)
Fig. 1
Fig. 2
100
90
80
Efficiency Vs Input Voltage (Full Load)
100
95
90
85
Efficiency Vs Output Load(Vin=Vin-nominal)
Efficiency(%)
80
75
70
65
60
55
50
4.60
4.70
4.80
4.90
5.00
5.10
5.20
5.30
5.40
5.50
A0505(X)T-1W
Efficiency(%)
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
A0505(X)T-1W
Input Voltage (V)
Output Current Percentage (%)
Efficiency Vs Input Voltage (Full Load)
100
95
90
80
75
70
65
60
55
50
22.00
22.50
23.00
23.50
24.00
24.50
25.00
25.50
26.00
26.50
Efficiency Vs Output Load(Vin=Vin-nominal)
100
90
80
A2405(X)T-1W
Efficiency(%)
Efficiency(%)
85
A2405(X)T-1W
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
Input Voltage (V)
Output Current Percentage(%)
Design Reference
1. Typical application
If it is required to further reduce input and output ripple, a filter capacitor can be connected to the input and output terminals, see Fig.3.
Moreover, choosing suitable filter capacitor is very important , start-up problems may be caused by too large capacitance. To ensured the
modules running well, the recommended capacitive load values as shown in Table 1.
Vin
GND
Cin
DC DC
Fig. 3
Cout
Cout
+Vo
0V
-Vo
Vin
GND
REG
REG
+Vo
0V
-Vo
DC DC
REG
Fig.4
Recommended capacitive load value table (Table 1)
Vin
Cin
Vout
Cout
(VDC)
(μF)
(VDC)
(μF)
3.3
4.7
±5
4.7
5
12
15
4.7
2.2
2.2
±9
±12
±15
2.2
2.2
1
24
1
±24
0.47
It is not recommended to connect any external capacitor when output power is less than 0.5W.
2014.05.20-B/4
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_(X)T-1W series
2.EMC typical recommended circuit
Vin
C1
GND
Vin
+Vo
LOAD
EUT
GND
Input voltage (VDC)
EMI
C1
CY
15
2.2μF /50V
100pF/2000V
24
4.7μF /50V
100pF/2000V
-Vo
0V
CY
Fig.5
Note: Product bare input of 3.3V,5V,12V already meet CLASS A.
3. Output load requirements
To ensure the module work efficiently and reliably, during the operation, the min. output load should be no less than 10% of the full load. If the
actual output power is low, please connect a resister to the output terminal in parallel, with a recommenced resistance which is 10% of the
rated power, and derating is required during operation, or use our company’s products with a lower rated output power (A_(X)T-W2 series).
4. For more information please find the application notes on www.mornsun-power.com
Dimensions and Recommended Layout
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
Packing Information please refer to 'Product Packing Information'. Packing bag number: 58200019;
If the product is operated under the min. required load, the product performance cannot be guaranteed to comply with all
performance indexes in this datasheet;
The max. capacitive load should be tested within the input voltage range and under full load conditions;
Unless otherwise specified, data in this datasheet should be tested under the conditions of Ta=25°C, humidity<75% when inputting
nominal voltage and outputting rated load;
All index testing methods in this datasheet are based on our Company’s corporate standards;
The performance indexes of the product models listed in this manual are as above, but some indexes of non-standard model products
will exceed the above-mentioned requirements, and please directly contact our technicians for specific information;
We can provide product customization service;
Specifications of this product are subject to changes without prior notice.
MORNSUN Guangzhou Science & Technology Co., Ltd.
Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China
Tel: 86-20-38601850-8801
Fax: 86-20-38601272
E-mail:
info@mornsun.cn
2014.05.20-B/4
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
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