DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
s
2W isolated DC-DC converter
Fixed input voltage, unregulated single or dual output
FEATURES
High power density
High efficiency up to 86%
Operating ambient temperature range:
-40℃ to +105℃
No external components required
Miniature SIP package
Industry standard pin-out
I/O isolation test voltage 1.5k VDC
Report
UL 60950
EN 62368
Patent Protection
RoHS
A_S-2WR2 & B_S-2WR2 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 output regulation is not as strict.
Selection Guide
Input Voltage (VDC)
Certification
Part No.
A0503S-2WR2
A0505S-2WR2
UL/EN
A0509S-2WR2
A0512S-2WR2
A0515S-2WR2
A0524S-2WR2
UL
B0503S-2WR2
B0505S-2WR2
B0509S-2WR2
UL/EN
B0512S-2WR2
B0515S-2WR2
B0524S-2WR2
--
B0905S-2WR2
B0912S-2WR2
A1205S-2WR2
A1209S-2WR2
UL/EN
A1212S-2WR2
A1215S-2WR2
A1224S-2WR2
UL
B1203S-2WR2
B1205S-2WR2
B1209S-2WR2
UL/EN
B1212S-2WR2
B1215S-2WR2
B1224S-2WR2
--
A1505S-2WR2
A1515S-2WR2
15
(13.5-16.5)
12
(10.8-13.2)
9
(8.1-9.9)
5
(4.5-5.5)
Nominal
(Range)
Voltage
(VDC)
±3.3
±5
±9
±12
±15
±24
3.3
5
9
12
15
24
5
12
±5
±9
±12
±15
±24
3.3
5
9
12
15
24
±5
±15
Output
Current (mA)
Max./Min.
±303/±30
±200/±20
±111/±11
±83/±8
±67/±7
±42/±4
606/60
400/40
222/22
167/17
133/13
83/8
400/40
167/17
±200/±20
±111/±11
±83/±8
±67/±7
±42/±4
606/60
400/40
222/22
167/17
133/13
83/8
±200/±20
±67/±7
Full Load
Efficiency (%)
Min./Typ.
67/71
76/80
80/84
80/84
78/82
80/84
75/79
80/84
75/79
80/84
80/84
80/84
75/79
79/83
76/80
78/82
78/82
80/84
80/84
75/79
78/82
77/81
80/84
81/85
82/86
74/78
77/81
100
220
100
220
100
Capacitive
Load*(µF)
Max.
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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
B1505S-2WR2
--
UL
B1515S-2WR2
B1524S-2WR2
A2403S-2WR2
A2405S-2WR2
A2409S-2WR2
UL/EN
A2412S-2WR2
A2415S-2WR2
A2424S-2WR2
UL
B2403S-2WR2
B2405S-2WR2
B2409S-2WR2
UL/EN
B2412S-2WR2
B2415S-2WR2
B2424S-2WR2
24
(21.6-26.4)
15
(13.5-16.5)
5
15
24
±3.3
±5
±9
±12
±15
±24
3.3
5
9
12
15
24
400/40
133/13
83/8
±303/±30
±200/±20
±111/±11
±83/±8
±67/±7
±42/±4
606/60
400/40
222/22
167/17
133/13
83/8
74/78
78/82
78/82
76/80
76/80
82/86
80/84
80/84
80/84
75/79
76/80
82/86
80/84
82/86
82/86
220
100
220
Note: * The specified maximum capacitive load for positive and negative output is identical.
Input Specifications
Item
Operating Conditions
5V input
Input Current
(full load / no-load)
9V input
12V input
15V input
24V input
Reflected Ripple Current
5V input
9V input
Surge Voltage (1sec. max.)
12V input
15V input
24V input
Input Filter
Hot Plug
Min.
--
--
--
--
--
--
-0.7
-0.7
-0.7
-0.7
-0.7
Typ.
506/35
268/25
208/20
167/15
104/10
15
--
--
--
--
--
Max.
--/60
--/50
--/50
--/35
--/30
--
9
12
18
21
30
Unavailable
VDC
mA
mA
Unit
Capacitance filter
Output Specifications
Item
Voltage Accuracy
Linear Regulation
Input voltage change:
±1%
3.3VDC output
Other output
3.3VDC output
5VDC output
Load Regulation
10%-100% load
9VDC output
12VDC output
15VDC output
24VDC output
Ripple & Noise*
Temperature Coefficient
20MHz bandwidth
Full load
--
--
--
--
--
--
--
--
--
--
Operating Conditions
Min.
Typ.
--
--
18
12
9
8
7
6
75
--
Max.
±1.5
±1.2
--
--
--
--
--
--
200
±0.03
mVp-p
%/℃
%
Unit
See output regulation curve(Fig. 1)
--
2022.03.22-B/2
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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
A24xxS-2WR2/B24xxS-2WR2
A12xxS-2WR2/B12xxS-2WR2
A15xxS-2WR2/B15xxS-2WR2
A0524S-2WR2/B0524S-2WR2
Other output
--
--
1
s
Short-circuit Protection**
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:
A24xxS-2WR2/B24xxS-2WR2/A12xxS-2WR2/B12xxS-2WR2/A15xxS-2WR2/B15xxS-2WR2 series, and A0524S-2WR2/B0524S-2WR2.
General Specifications
Item
Isolation Voltage
Insulation Resistance
Isolation Capacitance
Operating Temperature
Storage Temperature
Case Temperature Rise
Pin Soldering Resistance Temperature
Storage Humidity
Switching Frequency
MTBF
Ta=25℃, nominal input, full load output
Soldering spot is 1.5mm away from case for 10 seconds
Non-condensing
Full load, nominal input voltage
MIL-HDBK-217F @ 25℃
Operating Conditions
Input-output Electric strength test for 1 minute with a
leakage current of 1mA max.
Input-output resistance at 500VDC
Input-output capacitance at 100kHz/0.1V
Derating when operating temperature up to 85℃, (see
Fig. 2)
Min.
1500
1000
--
-40
-55
--
--
--
--
3500
Typ.
--
--
20
--
--
25
--
--
100
--
Max.
--
--
--
105
125
--
300
95
--
--
%RH
kHz
k hours
℃
Unit
VDC
MΩ
pF
Mechanical Specifications
Case Material
Dimensions
Weight
Cooling Method
Black plastic; flame-retardant and heat-resistant (UL94V-0)
19.65 x 7.05 x 10.16mm
2.4g (Typ.)
Free air convection
Electromagnetic Compatibility (EMC)
Emissions
Immunity
CE
RE
ESD
A_S-2WR2
B_S-2WR2
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
IEC/EN61000-4-2
IEC/EN61000-4-2
Contact ±6kV
Contact ±8kV
performance Criteria B
performance Criteria B
Typical Performance Curves
3.3VDC output
Other
output
Fig. 1
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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
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.
Dual Output
Vin
GND
Cin
DC DC
Cout
Cout
+Vo
0V
-Vo
+Vo
Table 1: Recommended input and output capacitor values
Vin
5VDC
15VDC
24VDC
Cin
Single Vo
Cout
Dual Vo
Cout
1µF/25V
--
4.7µF/16V 3.3/5VDC 10µF/16V ±3.3/±5VDC 4.7µF/16V
2.2µF/25V 15/24VDC 1µF/50V ±15/±24VDC 0.47µF/50V
1µF/50V
--
--
--
Singl e Output
9/12VDC 2.2µF/25V 9/12VDC 2.2µF/25V ±9/±12VDC
Vin
GND
Cin
DC DC
Fig.3
Cout
0V
2022.03.22-B/2
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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
2. EMC (CLASS B) compliance circuit
LDM
Vin
C1
GND
C2
Vin
+Vo
C3
LOAD
Input voltage
C1/C2
Emissions
CY
C3
LDM
5/9/12/15VDC
4.7µF /50V
--
6.8µH
24VDC
1nF /2kV
DC/DC
GND
-Vo
(0V)
Refer to Cout in Fig.3
Fig. 4
CY
Note: For 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
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
For additional information on Product Packaging please refer to
www.mornsun-power.com.
Packaging bag number: 58200001;
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;
The maximum capacitive load offered were tested at input voltage range and full load;
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;
All index testing methods in this datasheet are based on our company corporate standards;
We can provide product customization service, please contact our technicians directly for specific information;
Products are related to laws and regulations: see "Features" and "EMC";
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
2022.03.22-B/2
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