DC/DC Converter
A_S-1WR2 & B_LS-1WR2 Series
2020.10.28-B/8 Page 1of 6
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1W isolated DC-DC converter
Fixed input voltage, unregulated single or dual output
Patent Protection RoHS
FEATURES
High power density
High efficiency of up to 80%
Operating ambient temperature range: -40℃to
+105℃
Ultra compact SIP package
Industry standard pin-out
I/O isolation test voltage 1.5k VDC
UL60950/EN60950 approved
Meets EN62368
A_S-1WR2 & B_LS-1WR2 series is designed for use in distributed power supply systems and especially suitable in applications such as pure
digital circuits, low frequency analog circuits, relay-driven circuits and data switching circuits, where:
1. The voltage of the input power supply is relatively stable with a variation of ±10%Vin or less;
2. An input to output isolation voltage of up to 1500VDC is necessary;
3. The requirement for a tight line and load regulation is not as strict.
Selection Guide
Certification
Part No.
Input Voltage (VDC)
Output
Full Load
Efficiency (%)
Min./Typ.
Capacitive
Load(µF)*
Max.
Nominal
(Range)
Current(mA)
Max./Min.
--
A0305S-1WR2
3.3
(2.97-3.63)
±100/±10
70/74
100
A0312S-1WR2
±42/±5
70/74
A0315S-1WR2
±34/±4
72/76
B0303LS-1WR2
303/31
68/72
220
B0305LS-1WR2
200/20
74/78
A0503S-1WR2
5
(4.5-5.5)
±152/±15
67/71
100
UL/CE
A0505S-1WR2
±100/±10
76/80
A0509S-1WR2
±56/±6
76/80
A0512S-1WR2
±42/±5
76/80
A0515S-1WR2
±34/±4
76/80
A0524S-1WR2
±21/±3
76/80
--
B0503LS-1WR2
303/31
70/74
220
UL/CE
B0505LS-1WR2
200/20
76/80
B0509LS-1WR2
111/11
76/80
B0512LS-1WR2
84/9
76/80
B0515LS-1WR2
67/7
76/80
B0524LS-1WR2
42/5
76/80
--
A0909S-1WR2
9
(8.1-9.9)
±56/±6
76/80
100
A0915S-1WR2
±34/±4
76/80
A1203S-1WR2
12
(10.8-13.2)
±152/±15
72/76
UL/CE
A1205S-1WR2
±100/±10
76/80
A1209S-1WR2
±56/±6
76/80
A1212S-1WR2
±42/±5
76/80
A1215S-1WR2
±34/±4
76/80
A1224S-1WR2
±21/±3
76/80
--
B1203LS-1WR2
303/31
72/76
220
UL/CE
B1205LS-1WR2
200/20
76/80
B1209LS-1WR2
111/11
76/80
DC/DC Converter
A_S-1WR2 & B_LS-1WR2 Series
2020.10.28-B/8 Page 2of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
B1212LS-1WR2
84/9
76/80
UL/CE
B1215LS-1WR2
12
(10.8-13.2)
67/7
76/80
220
B1224LS-1WR2
42/5
76/80
--
A1505S-1WR2
15
(13.5-16.5)
±100/±10
76/80
100
A1512S-1WR2
±42/±5
76/80
UL
A1515S-1WR2
±34/±4
76/80
CE
B1505LS-1WR2
200/20
76/80
220
--
B1512LS-1WR2
84/9
76/80
CE
B1515LS-1WR2
67/7
76/80
UL/CE
A2405S-1WR2
24
(21.6-26.4)
±100/±10
76/80
100
A2409S-1WR2
±56/±6
76/80
A2412S-1WR2
±42/±5
76/80
A2415S-1WR2
±34/±4
76/80
A2424S-1WR2
±21/±3
76/80
--
B2403LS-1WR2
303/31
70/74
220
UL/CE
B2405LS-1WR2
200/20
76/80
B2409LS-1WR2
111/11
76/80
B2412LS-1WR2
84/9
76/80
B2415LS-1WR2
67/7
76/80
B2424LS-1WR2
42/5
76/80
Note: * The specified maximum capacitive load for positive and negative output is identical.
Input Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Input Current (full load / no-load)
3.3V input
--
426/30
--/70
mA
5V input
--
281/25
--/60
9V input
--
142/20
--/60
12V input
--
106/15
--/50
15V input
--
84/10
--/35
24V input
--
54/7
--/30
Surge Voltage (1sec. max.)
3.3V input
-0.7
--
5
VDC
5V input
-0.7
--
9
9V input
-0.7
--
12
12V input
-0.7
--
18
15V input
-0.7
--
21
24V input
-0.7
--
30
Reflected Ripple Current*
--
15
--
mA
Input Filter
Capacitance filter
Hot Plug
Unavailable
Note: * Refer to DC-DC Converter Application Notes for detailed description of reflected ripple current test method.
Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Voltage Accuracy
See output regulation curve (Fig. 1)
Linear 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
--
DC/DC Converter
A_S-1WR2 & B_LS-1WR2 Series
2020.10.28-B/8 Page 3of 6
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15VDC output
--
7
--
%
24VDC output
--
6
--
Ripple & Noise*
20MHz bandwidth
--
60
150
mVp-p
Temperature Coefficient
100% load
--
--
±0.03
%/℃
Short-circuit Protection**
B03xxLS-1WR2/A24xxS-1WR2 /B24xxLS-1WR2
A0524S-1WR2/B0524LS-1WR2/A0315S-1WR2
--
--
1
s
others
Continuous, self-recovery
Notes: * The “parallel cable” method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information.
** At the end of the short circuit duration, the supply voltage must be disconnected from following models: B03xxLS-1WR2/A24xxS-1WR2 /B24xxLS-1WR2
series, and A0524S-1WR2/ B0524LS-1WR2/A0315S-1WR2.
General Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Isolation Voltage
Input-output Electric Strength Test for 1 minute with a
leakage current of 1mA max.
1500
--
--
VDC
Insulation Resistance
Input-output resistance at 500VDC
1000
--
--
MΩ
Isolation Capacitance
Input-output capacitance at 100kHz/0.1V
--
20
--
pF
Operating Temperature
Derating if the temperature ≥85°C, (see Fig. 2)
-40
--
105
℃
Storage Temperature
-55
--
125
Case Temperature Rise
Ta=25℃
--
25
--
Pin Soldering Resistance Temperature
Soldering spot is 1.5mm away from case for 10 seconds
--
--
300
Storage Humidity
Non-condensing
--
--
95
%RH
Switching Frequency
100% load, nominal input voltage
--
100
--
kHz
MTBF
MIL-HDBK-217F @ 25℃
3500
--
--
k hours
Mechanical Specifications
Case Material
Black epoxy resin; flame-retardant heat- resistant (UL94 V-0)
Dimensions
19.50 x 6.00 x 9.30 mm
Weight
2.4g (Typ.)
Cooling Method
Free air convection
Electromagnetic Compatibility (EMC)
Emissions
CE
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
RE
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
Immunity
ESD
A_S-1WR2
IEC/EN61000-4-2 Contact ±6kV perf. Criteria B
B_LS-1WR2
IEC/EN61000-4-2 Contact ±8kV perf. Criteria B
Typical Performance Curves
3.3VDC output
Others
Fig. 1
DC/DC Converter
A_S-1WR2 & B_LS-1WR2 Series
2020.10.28-B/8 Page 4of 6
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120
100
80
60
40
20
0
-40 040 105
Output Power Per cent(%)
Ambient Temp.( )
℃
Safe Operating Are a
Temperature Derating Curve
85
Fig. 2
Design Reference
1. Typical application
Input and/or output ripple can be further reduced, by connecting a filter capacitor from the input and/or output terminals to ground as
shown in Fig.3.
Choosing suitable filter capacitor values is very important for a smooth operation of the modules, particularly to avoid start-up problems
caused by capacitor values that are too high. For recommended input and output capacitor values refer to Table 1.
Vin
GND
+Vo
0V
DC
Cin
DC
Cout
Cout
-Vo
Dual
Single
Vin
GND
+Vo
0V
DC
Cin
DC
Cout
Fig.3
Table 1: Recommended input and output capacitor values
Vin
(VDC)
Cin
(µF)
Single Vout
(VDC)
Cout
(µF)
Dual Vout
(VDC)
Cout
(µF)
3.3/5
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-1WR2 & B_LS-1WR2 Series
2020.10.28-B/8 Page 5of 6
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2. EMC (CLASS B) compliance circuit
Vin
GND
+Vo
-Vo
(0V)
DC/DC LOAD
LDM
C1
Vin
GND
C2
CY
Fig. 4
Input voltage (VDC)
3.3/5/9/12
15/24
EMI
C1
4.7µF /50V
C2
Refer to Cout in Fig.3
CY
--
1nF/2KV
LDM
6.8µH
Note: For 15V/24V input models use a Y-capacitor CY of 1nF/2kV.
3. Minimum Output Load Requirement
For a reliable and efficient operation of the converter, the minimum load should never be less than 10% of the rated output load. If the
total required output power is below 10%, a parallel bleeding resistor is required on the output, ensuring that the sum of the power
consumption is always maintained at 10% minimum.
4. For additional information, please refer to DC-DC converter application notes on
www.mornsun-power.com
Dimensions and Recommended Layout
DC/DC Converter
A_S-1WR2 & B_LS-1WR2 Series
2020.10.28-B/8 Page 6of 6
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Note:
1. For additional information on Product Packaging please refer to www.mornsun-power.com. Packaging bag number: 58200029;
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 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, Huangpu District, Guangzhou, P. R. China
Tel: 86-20-38601850 Fax: 86-20-38601272 E-mail: info@mornsun.cn www.mornsun-power.com