DC/DC Converter
A_XT-1WR2 Series
2016.05.04-A/3 Page 1 of 5
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1W, Fixed input voltage, isolated & unregulated
dual output
Patent Protection RoHS
FEATURES
Operating temperature range: -40℃to +105℃
High efficiency up to 82%
Compact SMD package
Isolation voltage: 1.5K VDC
Internal surface mounted design
No external component required
International standard pin-out
EN60950 approval
A_XT-1WR2 series are specially designed for applications where an isolated voltage is required in a distributed power supply system. They are
suitable for
1. Where the voltage of the input power supply is stable (voltage variation: ±10%Vin);
2. Where isolation between input and output is necessary (isolation voltage ≤1500VDC);
3. Where the output voltage regulation is not strictly required;
4. Typical application: preceding-stage interference isolation condition; ground-interference canceled condition; digit circuit condition;
Voltage-isolation converting condition; normal low-frequency artificial circuit condition; relay drive circuit condition, etc.
Selection Guide
Certification
Part No.
Input Voltage (VDC)
Output
Max. Capacitive
Load
(µF)
Nominal
(Range)
Output Voltage
(VDC)
Output Current
(mA)(Max./Min.)
CE
A0305XT-1WR2
3.3
(2.97-3.63)
±5
±100/±10
100
A0312XT-1WR2
±12
±42/±5
A0315XT-1WR2
±15
±33/±3
A0505XT-1WR2
5
(4.5-5.5)
±5
±100/±10
A0509XT-1WR2
±9
±56/±6
A0512XT-1WR2
±12
±42/±5
A0515XT-1WR2
±15
±33/±3
A0524XT-1WR2
±24
±21/±2
A1205XT-1WR2
12
(10.8-13.2)
±5
±100/±10
A1209XT-1WR2
±9
±56/±6
A1212XT-1WR2
±12
±42/±5
A1215XT-1WR2
±15
±33/±3
A1224XT-1WR2
±24
±21/±2
A1515XT-1WR2
15
(13.5-16.5)
±15
±33/±3
A2405XT-1WR2
24
(21.6-26.4)
±5
±100/±10
A2409XT-1WR2
±9
±56/±6
A2412XT-1WR2
±12
±42/±5
A2415XT-1WR2
±15
±33/±3
A2424XT-1WR2
±24
±21/±2
Note: *The capacitive loads of positive and negative outputs are identical.
Input Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Input Current
(full load / no-load)
3.3V input
--
389/25
--/70
mA
5V input
--
250/20
--/60
12V input
--
104/15
--/50
15V input
--
83/12
--/35
24V input
--
52/10
--30
DC/DC Converter
A_XT-1WR2 Series
2016.05.04-A/3 Page 2 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
Reflected Ripple Current
--
15
--
mA
Surge Voltage (1sec. max.)
3.3V input
-0.7
--
5
VDC
5V input
-0.7
--
9
12V input
-0.7
--
18
15V input
-0.7
--
21
24V input
-0.7
--
30
Input Filter
Filter capacitor
Hot Plug
Unavailable
Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Output Voltage Accuracy
See tolerance envelope curve(Fig. 1)
Line Regulation
Input voltage change: ±1%
--
--
±1.2
--
Load Regulation
10%-100% load
5VDC output
--
12
--
%
9VDC output
--
9
--
12VDC output
--
8
--
15VDC output
--
7
--
24VDC output
--
6
--
Ripple & Noise*
20MHz bandwidth
--
60
150
mVp-p
Temperature Coefficient
Full load
--
--
±0.03
%/℃
Short Circuit Protection**
A03xxXT-1WR2/A24xxXT-1WR2/A0524XT-1WR2
--
--
1
s
Others
Continuous, self-recovery
Note: *Ripple and noise are measured by “parallel cable” method, please see DC-DC Converter Application Notes for specific operation;
**Supply voltage must be discontinued at the end of short circuit duration for A03xxXT-1WR2 series, A0524XT-1WR2 model and A24xxXT-1WR2 series.
General Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Isolation Voltage
Input-output, with the test time of 1 minute and the leak
current lower than 1mA
1500
--
--
VDC
Isolation Resistance
Input-output, isolation voltage 500VDC
1000
--
--
MΩ
Isolation Capacitance
Input-output, 100KHz/0.1V
--
20
--
pF
Operating Temperature
Derating when operating temperature up to 100℃, (see
Fig. 2)
-40
--
105
℃
Storage Temperature
-55
--
125
Casing Temperature Rise
Ta=25℃, nominal input, full load output
--
25
--
Pin Welding Resistance Temperature
Welding spot is 1.5mm away from the casing, 10 seconds
--
--
300
Storage Humidity
Non-condensing
--
--
95
%RH
Reflow Soldering Temperature
Peak temp.≤245℃, maximum duration
time≤60s at 217℃.
For actual application, please refer to
IPC/JEDEC J-STD-020D.1.
Switching Frequency
Full load, nominal input voltage
--
100
--
KHz
MTBF
MIL-HDBK-217F@25℃
3500
--
--
K hours
Physical Specifications
Casing Material
Epoxy resin (UL94 V-0)
Dimensions
15.24*11.20*7.25 mm
Weight
2.0g (Typ.)
Cooling Method
Free air convection
DC/DC Converter
A_XT-1WR2 Series
2016.05.04-A/3 Page 3 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
EMC Specifications
EMI
CE
CISPR22/EN55022 CLASS B (see Fig. 5 for recommended circuit)
RE
CISPR22/EN55022 CLASS B (see Fig. 5 for recommended circuit)
EMS
ESD
IEC/EN61000-4-2 Contact ±6KV perf. Criteria B
Product Characteristic Curve
-10%
80%
20%
10% 40% 60%
-5%
0
+5%
+10%
+15%
100%
Typ
.
Min.
Max .
-7.5%
-2.5%
+2.5%
Output Current Percent
(Nominal Input Vo ltage)
Output Voltage Accuracy
Tolerance Envelope Cur ve
Fig. 1
120
100
80
60
40
20
0
-40 040 71 105
Output P ower Percent(%)
Ambient Temp.( )
℃
Safe Ope ratin g Area
Temperature Derating Curve
100
Fig. 2
Design Reference
1. Typical application circuit
If it is required to further reduce input and output ripple, a filter capacitor may be connected to the input and output terminals, see Fig.3.
Moreover, choosing a suitable filter capacitor is very important, start-up problems may be caused if the capacitance is too large. Under the
condition of safe and reliable operation, the recommended capacitive load values are shown in Table 1.
The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat
protection that is connected to the input or output end in series (see Fig. 4).
Vin
GND
+Vo
0V
DC
Cin DC Cout
Cout
-Vo
Fig.3
Vin
GND
0V
+Vo
DC DC
-Vo
REG REG
REG
Fig.4
DC/DC Converter
A_XT-1WR2 Series
2016.05.04-A/3 Page 4 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
Recommended capacitive load value table (Table 1)
Vin(VDC)
Cin(µF)
Vo (VDC)
Cout(µF)
3.3
4.7
±5
4.7
5
4.7
±9
2.2
12
2.2
±12
1
15
2.2
±15
1
24
1
±24
0.47
2. EMC solution-recommended circuit
Vin
GND
+Vo
-Vo
DC/DC LOAD
LDM
C1
Vin
GND
C2
CY
Fig. 5
Input voltage (VDC)
3.3/5/12
15/24
EMI
C1
4.7µF /50V
C2
Refer to the Cout in Fig.3
LDM
6.8µH
CY
--
1nF /2KV
Note: 1. 15/24V input series, 24V output series is subject to CY (CY : 1nF/2KV).
2. It is not needed to add the component in the peripheral circuit when
parameter with the symbol of "--".
3. Output load requirements
In order to ensure the converter can work reliably with high efficiency, the minimum load should not less than 10% rated load when it is used.
If the needed power is indeed small, please parallel a resistor on t the output side ( The sum of the efficient power and resistor consumption
power is not less than 10%).
4. For more information please find DC-DC converter application notes on www.mornsun-power.com
Dimensions and Recommended Layout
DC/DC Converter
A_XT-1WR2 Series
2016.05.04-A/3 Page 5 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
Notes:
1. Packing information please refer to Product Packing Information which can be downloaded from www.mornsun-power.com. Packing
bag number: 58210023;
2. If the product is not operated within the required load range, the product performance cannot be guaranteed to comply with all
parameters in the datasheet;
3. The maximum capacitive load offered were tested at input voltage range and full load;
4. Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25℃, humidity<75%RH with nominal
input voltage and rated output load;
5. All index testing methods in this datasheet are based on our Company’s corporate standards;
6. We can provide product customization service, please contact our technicians directly for specific information;
7. Specifications are subject to change 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