DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
2W, Fixed input voltage, isolated & unregulated
dual /single output
FEATURES
Continuous short-circuit protection
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
Patent Protection
RoHS
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
Input Voltage (VDC)
Certification
--
Part No.
A0503S-2WR2
A0505S-2WR2
A0509S-2WR2
UL/CE
A0512S-2WR2
A0515S-2WR2
A0524S-2WR2
--
B0503S-2WR2
B0505S-2WR2
B0509S-2WR2
UL/CE
B0512S-2WR2
B0515S-2WR2
B0524S-2WR2
--
B0905S-2WR2
B0912S-2WR2
A1205S-2WR2
A1209S-2WR2
UL/CE
A1212S-2WR2
A1215S-2WR2
A1224S-2WR2
--
B1203S-2WR2
B1205S-2WR2
B1209S-2WR2
UL/CE
B1212S-2WR2
B1215S-2WR2
B1224S-2WR2
12
(10.8-13.2)
9
(8.1-9.9)
5
(4.5-5.5)
Nominal
(Range)
Output 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
Output
Output Current (mA)
(Max./Min.)
±303/±30
±200/±20
±111/±11
±83/±8
±67/±7
±42/±4
400/40
400/40
222/22
167/17
133/13
83/8
400/40
167/17
±200/±20
±111/±11
±83/±8
±67/±7
±42/±4
400/40
400/40
222/22
167/17
133/13
83/8
Efficiency
(%, Min./Typ.)
@ Full Load
67/80
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
80/84
80/84
80/84
80/84
75/79
78/82
77/81
80/84
81/85
82/86
220
100
220
100
Max. Capacitive
Load*
(μF)
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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
A1505S-2WR2
A1515S-2WR2
--
B1505S-2WR2
B1515S-2WR2
A2403S-2WR2
A2405S-2WR2
A2409S-2WR2
UL/CE
A2412S-2WR2
A2415S-2WR2
A2424S-2WR2
--
B2403S-2WR2
B2405S-2WR2
B2409S-2WR2
UL/CE
B2412S-2WR2
B2415S-2WR2
B2424S-2WR2
Note: *The capacitive loads of positive and negative outputs are identical.
±5
15
(13.5-16.5)
±15
5
15
±3.3
±5
±9
±12
±15
24
(21.6-26.4)
±24
3.3
5
9
12
15
24
±200/±20
±67/±7
400/40
133/13
±303/±30
±200/±20
±111/±11
±83/±8
±67/±7
±42/±4
400/40
400/40
222/22
167/17
133/13
83/8
76/80
80/84
76/80
81/85
76/80
76/80
82/86
80/84
80/84
80/84
75/79
76/80
82/86
80/84
82/86
82/86
100
220
100
220
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
Filter capacitor
Output Specifications
Item
Output Voltage Accuracy
Line 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
Short Circuit Protection**
20MHz bandwidth
Full load
A24xxS-2WR2/B24xxS-2WR2
A0524S-2WR2/B0524S-2WR2
Others
Operating Conditions
Min.
--
--
--
--
--
--
--
--
--
--
--
Typ.
--
--
18
12
9
8
7
6
75
--
--
Max.
±1.5
±1.2
--
--
--
--
--
--
200
±0.03
1
mVp-p
%/℃
s
%
Unit
See tolerance envelope graph (Fig. 1)
--
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 series, and A0524S-2WR2/B0524S-2WR2 models.
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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
General Specifications
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Operating Temperature
Storage Temperature
Casing Temperature Rise
Pin Welding Resistance Temperature
Storage Humidity
Switching Frequency
MTBF
Ta=25℃, nominal input, full load output
Welding spot is 1.5mm away from the casing, 10 seconds
Non-condensing
Full load, nominal input voltage
MIL-HDFK-217F@25℃
Operating Conditions
Input-output, with the test time of 1 minute and the leak
current lower than 1mA
Input-output, isolation voltage 500VDC
Input-output, 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
Physical Specifications
Casing Material
Dimensions
Weight
Cooling Method
Black flame-retardant heat-proof epoxy resin (UL94-V0)
19.65*7.05*10.16mm
2.4g(Typ.)
Free convection
EMC Specifications
EMI
EMS
CE
RE
ESD
A_S-2WR2
B_S-2WR2
CISPR22/EN55022
CISPR22/EN55022
IEC/EN61000-4-2
IEC/EN61000-4-2
CLASS B (see Fig. 4 for recommended circuit)
CLASS B (see Fig. 4 for recommended circuit)
Contact
Contact
±6KV
±8KV
perf. Criteria B
perf. Criteria B
Product Characteristic Curve
3.3VDC output
Output Voltage
Accuracy
(%)
Other output
Output Voltage
Accuracy
(%)
+15%
+10%
+5%
0
-5%
-10%
10% 20%
40%
60%
80%
+10%
+5%
0
-5%
-10%
-15%
Tolerance Envelope Cur ve
Max .
+1.0%
Tolerance Envelope Curve
Max .
Ty p
.
M i n.
+2.5%
-2.5%
-7.5%
Ty p
.
-7.5%
M i n.
-15%
40%
60%
80%
100%
10% 20%
100%
Output Current Perc entage(%)
(Nominal Input Voltage)
Output Cur rent Perc ent(%)
(Nominal Input Voltage)
Fig. 1
Temperature Derating Curve
Output Power Percent(%)
120
100
80
60
40
20
0
-40
0
40
85 105 120
Safe Operating Area
Ambient Temp.(
℃
)
Fig. 2
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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
Efficiency Vs Innput Voltage (Full Load)
100
95
90
85
100
90
80
B0505S-2WR2
B0505S-2WR2
Efficiency Vs Output Load(Vin=5V)
Efficiency(%)
70
75
70
65
60
55
50
4.5 4.6 4.7 4.8 4.9
5
5.1 5.2 5.3 5.4 5.5
Efficiency(%)
80
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
Input Voltage(V)
100
95
90
85
B1212S-2WR2
Output Current Percentage(%)
Efficiency Vs Input Voltage (Full Load)
100
90
80
70
60
50
40
30
20
10
0
Efficiency Vs Output Load(Vin=12V)
B1212S-2WR2
Efficiency(%)
80
75
70
65
60
55
50
10.8
11.1
11.4
11.7
12.0
12.3
12.6
12.9
13.2
Efficiency(%)
Input Voltage(V)
10
20
30
40
50
60
70
80
90
100
Output Current Percentage(%)
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.
Dual Output
Vin
GND
Cin
DC DC
Cout
Cout
+Vo
0V
-Vo
+Vo
Recommended capacitive load value table (Table 1)
Vin
(VDC)
5
9/12
15
24
Cin
(μF)
4.7
2.2
2.2
1
Single Vo
(VDC)
3.3/5
9/12
15/24
--
Cout
(μF)
10
2.2
1
--
Dual Vo
(VDC)
±3.3/±5
±9/±12
±15/±24
--
Cout
(μF)
4.7
1
0.47
--
Singl e Output
Vin
GND
Cin
DC DC
Fig.3
Cout
0V
2. EMC typical recommended circuit (CLASS B)
LDM
Vin
C1
GND
C2
Vin
+Vo
C3
LOAD
Input voltage (VDC)
C1/C2
EMI
CY
C3
LDM
5/9/12/15
4.7μF /50V
--
6.8μH
24
1nF/2KV
DC/DC
GND
-Vo
(0V)
Refer to the Cout in Fig.3
Fig. 4
CY
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 "--".
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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
3. Output load requirements
When using, the minimum load of the module output should not be less than 10% of the nominal load. In order to meet the performance
parameters of this datasheet, please connect a 10% dummy load in parallel at the output end, the dummy load is generally a resistor,
Please note that the resistor needs to be used in derating.
4. For more information please find DC-DC converter application notes on
www.mornsun-power.com
Dimensions and Recommended Layout
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
Packing information please refer to Product Packing Information which can be downloaded from
www.mornsun-power.com.
Packing
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 nominal input voltage and full load;
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;
All index testing methods in this datasheet are based on our Company’s corporate standards;
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;
We can provide product customization service;
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
2015.04.20-A/2
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