DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
2018.07.03-A/6 Page 1 of 6
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2W, Fixed input voltage, isolated & unregulated
dual /single output
CB Patent Protection RoHS
FEATURES
Operating temperature range: -40℃to +105℃
High efficiency up to 86%
High power density
Miniature SIP package
Isolation voltage: 1.5K VDC
No external component required
International standard pin-out
IEC60950, UL60950, EN60950 approval
A_S-2WR2 & B_S-2WR2 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.
Input Specifications
Certification
Part No.
Input Voltage (VDC)
Output
Efficiency
(%, Min./Typ.)
@ Full Load
Max. Capacitive
Load*
(µF)
Nominal
(Range)
Output Voltage
(VDC)
Output Current (mA)
(Max./Min.)
--
A0503S-2WR2
5
(4.5-5.5)
±3.3
±303/±30
67/71
100
UL/CE/CB
A0505S-2WR2
±5
±200/±20
76/80
A0509S-2WR2
±9
±111/±11
80/84
A0512S-2WR2
±12
±83/±8
80/84
A0515S-2WR2
±15
±67/±7
78/82
A0524S-2WR2
±24
±42/±4
80/84
--
B0503S-2WR2
3.3
400/40
75/79
220
UL/CE/CB
B0505S-2WR2
5
400/40
80/84
B0509S-2WR2
9
222/22
75/79
B0512S-2WR2
12
167/17
80/84
B0515S-2WR2
15
133/13
80/84
B0524S-2WR2
24
83/8
80/84
--
B0905S-2WR2
9
(8.1-9.9)
5
400/40
75/79
B0912S-2WR2
12
167/17
79/83
UL/CE/CB
A1205S-2WR2
12
(10.8-13.2)
±5
±200/±20
76/80
100
A1209S-2WR2
±9
±111/±11
78/82
A1212S-2WR2
±12
±83/±8
80/84
A1215S-2WR2
±15
±67/±7
80/84
A1224S-2WR2
±24
±42/±4
80/84
--
B1203S-2WR2
3.3
400/40
75/79
220
UL/CE/CB
B1205S-2WR2
5
400/40
78/82
B1209S-2WR2
9
222/22
77/81
B1212S-2WR2
12
167/17
80/84
B1215S-2WR2
15
133/13
81/85
B1224S-2WR2
24
83/8
82/86
DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
2018.07.03-A/6 Page 2 of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
--
A1505S-2WR2
15
(13.5-16.5)
±5
±200/±20
74/78
100
A1515S-2WR2
±15
±67/±7
77/81
--
B1505S-2WR2
5
400/40
74/78
220
B1515S-2WR2
15
133/13
78/82
B1524S-2WR2
24
83/8
78/82
--
A2403S-2WR2
24
(21.6-26.4)
±3.3
±303/±30
76/80
100
UL/CE/CB
A2405S-2WR2
±5
±200/±20
76/80
A2409S-2WR2
±9
±111/±11
82/86
A2412S-2WR2
±12
±83/±8
80/84
A2415S-2WR2
±15
±67/±7
80/84
A2424S-2WR2
±24
±42/±4
80/84
--
B2403S-2WR2
3.3
400/40
75/79
220
UL/CE/CB
B2405S-2WR2
5
400/40
76/80
B2409S-2WR2
9
222/22
82/86
B2412S-2WR2
12
167/17
80/84
B2415S-2WR2
15
133/13
82/86
B2424S-2WR2
24
83/8
82/86
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)
5V input
--
506/35
--/60
mA
9V input
--
268/25
--/50
12V input
--
208/20
--/50
15V input
--
167/15
--/35
24V input
--
104/10
--/30
Reflected Ripple Current
--
15
--
mA
Surge Voltage (1sec. max.)
5V input
-0.7
--
9
VDC
9V input
-0.7
--
12
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 graph (Fig. 1)
Line Regulation
Input voltage change: ±1%
3.3VDC output
--
--
±1.5
%/%
Other output
--
--
±1.2
Load Regulation
10%-100% load
3.3VDC output
--
18
--
%
5VDC output
--
12
--
9VDC output
--
9
--
12VDC output
--
8
--
15VDC output
--
7
--
24VDC output
--
6
--
Ripple & Noise*
20MHz bandwidth
--
75
200
mVp-p
Temperature Coefficient
Full load
--
--
±0.03
%/℃
DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
2018.07.03-A/6 Page 3 of 6
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Short Circuit Protection**
A24xxS-2WR2/B24xxS-2WR2
A12xxS-2WR2/B12xxS-2WR2
A15xxS-2WR2/B15xxS-2WR2
A0524S-2WR2/B0524S-2WR2
--
--
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
A24xxS-2WR2/B24xxS-2WR2/A12xxS-2WR2/B12xxS-2WR2/A15xxS-2WR2/B15xxS-2WR2 series, and A0524S-2WR2/B0524S-2WR2 models.
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-HDBK-217F@25℃
3500
--
--
K hours
Physical Specifications
Casing Material
Black flame-retardant and heat-resistant plastic(UL94 V-0)
Dimensions
19.65*7.05*10.16mm
Weight
2.4g(Typ.)
Cooling Method
Free air convection
EMC Specifications
EMI
CE
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
RE
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
EMS
ESD
A_S-2WR2
IEC/EN61000-4-2 Contact ±6KV perf. Criteria B
B_S-2WR2
IEC/EN61000-4-2 Contact ±8KV perf. Criteria B
Product Characteristic Curve
3.3VDC output
-10%
80%
20%
10% 40% 60%
-5%
0
+5%
+10%
100%
Typ
.
Min.
Max.
-15%
-7.5%
+1.0%
-15%
Tolerance Envelope Curve
Output Cur rent Percentage
(Nominal Input Voltage)
Output Voltage Accuracy
Other output
-10%
80%
20%
10% 40% 60%
-5%
0
+5%
+10%
+15%
100%
Typ
.
Min.
Max.
-7.5%
-2.5%
+2.5%
Output Cur rent Percent
(Nominal Input Voltage)
Output Voltage Accuracy
Tolerance Envelope Curve
Fig. 1
DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
2018.07.03-A/6 Page 4 of 6
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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 Output
Single Output
Vin
GND
+Vo
0V
DC
Cin
DC
Cout
Fig.3
Recommended capacitive load value table (Table 1)
Vin
(VDC)
Cin
(µF)
Single Vo
(VDC)
Cout
(µF)
Dual Vo
(VDC)
Cout
(µF)
5
4.7
3.3/5
10
±3.3/±5
4.7
9/12
2.2
9/12
2.2
±9/±12
1
15
2.2
15/24
1
±15/±24
0.47
24
1
--
--
--
--
DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
2018.07.03-A/6 Page 5 of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
2. EMC typical recommended circuit (CLASS B)
Vin
GND
+Vo
-Vo
(0V)
DC/DC LOAD
LDM
C1
Vin
GND
C3
C2
CY
Fig. 4
Input voltage (VDC)
5/9/12/15
24
EMI
C1/C2
4.7µF /50V
CY
--
1nF/2KV
C3
Refer to the Cout in Fig.3
LDM
6.8µH
Note: 1. 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 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_S-2WR2 & B_S-2WR2 series
2018.07.03-A/6 Page 6 of 6
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: 58200001;
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. Products are related to laws and regulations: see "Features" and "EMC";
8. Our products shall be classified according to ISO14001 and related environmental laws and regulations, and shall be handled by
qualified units.
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
