DC/DC Converter
A_S-2WR3 & B_S-2WR3 series
FEATURES
2W isolated DC-DC converter
Fixed input voltage, unregulated dual/ single output
Continuous short-circuit protection
No-load input current as low as 8mA
Operating ambient temperature range:
-40℃ to +105℃
High efficiency up to 86%
High power density
I/O isolation test voltage 1.5k VDC
CB Patent Protection RoHS
Industry standard pin-out
UL 62368-1 EN 62368-1 IEC62368-1
A_S-2WR3 & B_S-2WR3 series are specially designed for applications where an (two) isolated voltage is required in a distributed power
supply system. They are suitable for:
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
UL/EN/IEC
-UL/EN/IEC
Output
Capacitive
(VDC)
Current (mA)
Max./Min.
Full Load
Efficiency (%)
Min./Typ.
A1203S-2WR3
±3.3
±303/±30
71/75
A1205S-2WR3
±5
±200/±20
76/80
A1207S-2WR3
±7.2
±139/±13
76/80
A1209S-2WR3
±9
±111/±11
78/82
A1212S-2WR3
±12
±83/±8
79/83
A1215S-2WR3
±15
±67/±7
79/83
±24
±42/±4
79/83
100
Part No.
--
A1224S-2WR3
Nominal
Voltage
(Range)
12
(10.8-13.2)
Load*(µF)
Max.
1200
470
220
--
B1203S-2WR3
3.3
400/40
75/79
2400
UL/EN/IEC
B1205S-2WR3
5
400/40
78/82
2400
--
B1209S-2WR3
9
222/22
78/82
1000
B1212S-2WR3
12
167/17
80/84
B1215S-2WR3
15
133/13
81/85
B1224S-2WR3
24
83/8
82/86
220
A1505S-2WR3
±5
±200/±20
76/80
1200
A1515S-2WR3
±15
±67/±7
78/82
220
5
400/40
76/80
2400
UL/EN/IEC
--
UL/EN/IEC
-UL/EN/IEC
--
B1505S-2WR3
B1515S-2WR3
15
(13.5-16.5)
560
15
133/13
77/81
560
B1524S-2WR3
24
83/8
77/81
220
A2403S-2WR3
±3.3
±303/±30
70/76
A2405S-2WR3
±5
±200/±20
74/80
A2407S-2WR3
±7.2
±139/±13
74/80
A2409S-2WR3
±9
±111/±11
75/81
±12
±83/±8
77/83
±15
±67/±7
77/83
A2424S-2WR3
±24
±42/±4
77/83
100
A2412S-2WR3
A2415S-2WR3
24
(21.6-26.4)
1200
470
220
B2403S-2WR3
3.3
400/40
70/76
2400
UL/EN/IEC
B2405S-2WR3
5
400/40
74/80
2400
--
B2409S-2WR3
9
222/22
75/81
1000
2021.09.23-A/4
Page 1 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_S-2WR3 & B_S-2WR3 series
UL/EN/IEC
UL/EN/IEC
B2412S-2WR3
24
(21.6-26.4)
B2415S-2WR3
B2424S-2WR3
12
167/17
78/84
15
133/13
80/86
24
83/8
80/86
560
220
Note: * The specified maximum capacitive load for positive and negative output is identical.
Input Specifications
Item
Operating Conditions
Input Current
(full load / no-load)
Min.
Typ.
Max.
12V input
--
223/8
235/--
15V input
--
167/8
176/--
24V input
--
110/8
120/--
--
15
--
12V input
-0.7
--
18
15V input
-0.7
--
21
24V input
-0.7
--
30
Reflected Ripple Current
Surge Voltage (1sec. max.)
Input Filter
Unit
mA
VDC
Capacitance filter
Hot Plug
Unavailable
Output Specifications
Item
Operating Conditions
Min.
Voltage Accuracy
Typ.
Max.
Unit
See output regulation curve(Fig. 1)
Linear Regulation
Input voltage change: ±1%
Load Regulation
10%-100% load
3.3VDC output
--
--
±1.5
Others
--
--
±1.2
3.3VDC output
--
15
--
5VDC output
--
7
--
7.2VDC output
--
6
--
9VDC output
--
5
--
12VDC output
--
5
--
15VDC output
--
4
--
24VDC output
--
3
--
--
%
Ripple & Noise*
20MHz bandwidth
--
75
180
mVp-p
Temperature Coefficient
Full load
--
±0.02
--
%/℃
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.
General Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Isolation
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 when operating temperature≥85℃, (see Fig. 2)
-40
--
105
-55
--
125
Storage Temperature
Case Temperature Rise
Ta=25℃
--
15
--
Pin Soldering Resistance Temperature
Soldering spot is 1.5mm away from case for 10 seconds
--
--
300
Storage Humidity
Non-condensing
5
--
95
Vibration
℃
%RH
10-150Hz, 5G, 0.75mm. along X, Y and Z
Switching Frequency
Full load, nominal input voltage
MTBF
MIL-HDBK-217F @ 25℃
--
260
--
kHz
3500
--
--
k hours
2021.09.23-A/4
Page 2 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_S-2WR3 & B_S-2WR3 series
Mechanical Specifications
Case Material
Black plastic; flame-retardant and heat-resistant (UL94-V0)
Dimensions
19.65 x 7.05 x 10.16mm
Weight
2.4g(Typ.)
Cooling Method
Free air convection
Electromagnetic Compatibility (EMC)
Emission
Immunity
CE
CISPR32/EN55032 CLASS B
RE
CISPR32/EN55032 CLASS B
ESD
IEC/EN61000-4-2
Air ±8kV, Contact ±6kV
perf. Criteria B
Note: Refer to Fig.4 for recommended circuit test
Typical Performance Curves
Fig. 1
Output Power Percent(%)
Temperature Derating Curve
120
100
80
60
40
Safe Operating Area
20
0
-40
0
40
85 105 120
Ambient Temp.(℃)
Fig. 2
2021.09.23-A/4
Page 3 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_S-2WR3 & B_S-2WR3 series
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
Table 1: Recommended input and output capacitor values
Single
Dual
+Vo
Vin
Cin
Cout
Cout*
Vin
Cout
Vout
Vout
0V
Cin
DC DC
Cout
12VDC 2.2µF/25V 3.3VDC 10µF/16V ±3.3VDC 4.7µF/16V
GND
-Vo
15VDC 2.2µF/25V
5VDC
10µF/16V ±5VDC 4.7µF/16V
Singl e Output
24VDC
1µF/50V
9VDC
2.2µF/25V ±7.2VDC 2.2µF/25V
+Vo
Vin
--12VDC 2.2µF/25V ±9VDC 2.2µF/25V
Cout
Cin
DC DC
--15VDC
1µF/25V ±12VDC
1µF/25V
GND
0V
--24VDC
1µF/50V ±15VDC
1µF/25V
Fig. 3
----±24VDC 0.47µF/50V
Note: *The capacitor value of the positive and the negative output is identical.
2. EMC compliance circuit
Single Output
Input voltage
12/15/24VDC
C1/C2
Emission
4.7µF /50V
CY
270pF /2kV
C3
Refer to Cout in Fig.3
LDM
6.8µH
Dual Output
Input voltage
Emission
12/15/24VDC
C1/C2
4.7µF /50V
CY
270pF /2kV
C3/C4
Refer to Cout in Fig.3
LDM
6.8µH
Fig. 4
3. For additional information, please refer to DC-DC converter application notes on
www.mornsun-power.com
2021.09.23-A/4
Page 4 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_S-2WR3 & B_S-2WR3 series
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
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