DC/DC Converter
A_D-1WR2 series
2015.11.09-A/2 Page 1 of 5
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1W, Fixed input voltage, isolated & unregulated
dual output
Patent Protection RoHS
FEATURES
Continuous short-circuit protection
Operating temperature range: -40℃to +105℃
High efficiency up to 81%
DIP package
Isolation voltage: 1.5K VDC
No external component required
International standard pin-out
A_D-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: digit circuit condition; normal low-frequency artificial circuit condition; relay drive circuit and data switching circuit
condition, etc.
Selection Guide
Part No.
Input Voltage (VDC)
Output
Efficiency (%,Min./Typ.)
@ Full Load
Max. Capacitive
Load*
(µF)
Nominal
(Range)
Output Current
(mA)(Max./Min.)
A0505D-1WR2
5
(4.5-5.5)
±100/±10
76/80
100
A0509D-1WR2
±56/±6
76/80
A0512D-1WR2
±42/±5
76/80
A0515D-1WR2
±34/±4
77/81
A0524D-1WR2
±21/±3
76/80
A1205D-1WR2
12
(10.8-13.2)
±100/±10
76/80
A1212D-1WR2
±42/±5
76/80
A1224D-1WR2
±21/±3
77/81
A1524D-1WR2
15
(13.5-16.5)
±21/±3
77/81
A2409D-1WR2
24
(21.6-26.4)
±56/±6
76/80
A2412D-1WR2
±42/±5
76/80
A2415D-1WR2
±34/±4
76/80
Note: *The capacitive loads of positive and negative outputs are the same.
Input Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Input Current
(full load / no-load)
5V input
--
256/25
--/60
mA
12V input
--
106/15
--/50
15V input
-
82/12
--/40
24V input
--
54/7
--/30
Reflected Ripple Current
--
15
--
mA
Surge Voltage (1sec. max.)
5V input
-0.7
--
9
VDC
12V input
-0.7
--
18
15V input
-0.7
--
21
24V input
-0.7
--
30
Input Filter
Filter capacitor
Hot Plug
Unavailable
DC/DC Converter
A_D-1WR2 series
2015.11.09-A/2 Page 2 of 5
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Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Output Voltage Accuracy
See tolerance envelope graph (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**
A24xxD-1WR2/ A0524D-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 A24xxD-1WR2 series, and A0524D-1WR2 model.
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 85℃, (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
Switching Frequency
Full load, nominal input voltage
--
100
--
KHz
MTBF
MIL-HDFK-217F@25℃
3500
--
--
K hours
Physical Specifications
Casing Material
Black flame-retardant heat-proof plastic (UL94-V0)
Dimensions
20.00*10.00*7.00mm
Weight
2.4g(Typ.)
Cooling Method
Free air convection
EMC Specifications
EMI
CE
CISPR22/EN55022 CLASS B (see Fig. 4 for recommended circuit)
RE
CISPR22/EN55022 CLASS B (see Fig. 4 for recommended circuit)
EMS
ESD
IEC/EN61000-4-2 Contact ±6KV perf. Criteria B
DC/DC Converter
A_D-1WR2 series
2015.11.09-A/2 Page 3 of 5
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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 Voltage)
Output Voltage Accuracy
Tolerance Envelope Cur ve
Fig. 1
120
100
80
60
40
20
0
Output Power Percent(%)
Ambient Temp.( )
℃
Temperature Derating Curve
Safe Operating Area
40 0 40 85 105 120
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.
Vin
GND
+Vo
0V
DC
Cin DC Cout
Cout
-Vo
Dual O utput
Single Output
Vin
GND
+Vo
0V
DC
Cin DC Cout
Fig.3
Recommended capacitive load value table (Table 1)
Vin(VDC)
Cin(µF)
Vo (VDC)
Cout(µF)
5
4.7
±5
4.7
12/15
2.2
±9/±12
1
24
1
±15/±24
0.47
DC/DC Converter
A_D-1WR2 series
2015.11.09-A/2 Page 4 of 5
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2. EMC solution-recommended circuit
Vin
GND
+Vo
DC/DC LOAD
LDM
C1
Vin
GND
C2
-Vo
CY
Fig. 4
Input voltage (VDC)
5/12
15/24
EMI
C1
4.7µF /50V
C2
Refer to the Cout in Fig.3
LDM
6.8µH
CY
--
1nF/2KV
Note: 1.15V/ 24V input 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_D-1WR2 series
2015.11.09-A/2 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: 58200009;
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 nominal input voltage and full load;
4. Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25℃, humidity<75% 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. The performance parameters of the product models listed in this manual are as above, but some parameters of non-standard model
products may exceed the requirements mentioned above. Please contact our technicians directly for specific information;
7. We can provide product customization service;
8. 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