DC/DC Converter
A05_S-1WR3 & B05_LS-1WR3 Series
FEATURES
1W isolated DC-DC converter
Fixed input voltage and unregulated dual/single output
Continuous short-circuit protection
No-load input current as low as 5mA
Operating temperature range: -40℃ to +105℃
High efficiency up to 85%
I/O isolation test voltage 1.5k VDC
Industry standard pin-out
SIP package
IEC62368, UL62368, EN62368 approved
CB Patent Protection RoHS
A05_S-1WR3 & B05_LS-1WR3 series are specially designed for applications where an isolated (two isolated) voltage is required in a
distributed power supply system. They are suitable for: pure digital circuits, low frequency analog circuits, relay-driven circuits and data
switching circuits.
Selection Guide
Input Voltage(VDC)
Certification
CE
Part No.
Full Load
Capacitive
Nominal
Voltage
Current(mA)
(VDC)
Max./Min.
Efficiency(%)
Min./Typ.
Load(µF)*
(Range)
A0503S-1WR3
±3.3
±152/±15
70/74
1200
A0505S-1WR3
±5
±100/±10
78/82
1200
A0509S-1WR3
±9
±56/±6
79/83
470
A0512S-1WR3
±12
±42/±5
79/83
220
A0515S-1WR3
±15
±34/±4
79/83
220
±24
±21/±3
81/85
100
3.3
303/30
70/74
2400
B0505LS-1WR3
5
200/20
78/82
2400
B0509LS-1WR3
9
111/12
79/83
1000
B0512LS-1WR3
12
84/9
79/83
560
B0515LS-1WR3
15
67/7
79/83
560
B0524LS-1WR3
24
42/4
81/85
220
A0524S-1WR3
UL/CE/CB
Output
B0503LS-1WR3
5
(4.5-5.5)
Max.
Note: *The specified maximum capacitive load for positive and negative output is identical.
Input Specifications
Item
Current
(full load / no-load)
Operating Conditions
Min.
Typ.
Max.
3.3VDC/5VDC output
--
270/5
286/10
9VDC/12VDC output
--
241/12
254/20
15VDC/24VDC output
--
241/18
254/30
--
15
--
-0.7
--
9
Reflected Ripple Current*
Surge Voltage (1sec. max.)
5VDC input
Input Filter
Unit
mA
VDC
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.
Voltage Accuracy
Linear Regulation
Typ.
Max.
Unit
See output regulation curve(Fig. 1)
Input voltage change: ±1%
3.3VDC output
--
--
1.5
Others
--
--
1.2
2019.10.15-A/5
%
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A05_S-1WR3 & B05_LS-1WR3 Series
Load Regulation
10%-100% load
Ripple & Noise*
20MHz bandwidth
Temperature Coefficient
100% load
3.3VDC output
--
15
20
5VDC output
--
10
15
9VDC output
--
8
10
12VDC output
--
7
10
15VDC output
--
6
10
%
24VDC output
--
5
10
Others
--
30
75
24VDC output
--
50
100
--
±0.02
--
Short-circuit Protection
mVp-p
%/℃
Continuous, self-recovery
Note: * 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
Insulation Resistance
Input-output Electric Strength Test for 1 minute with a
leakage current of 1mA max.
Input-output resistance at 500VDC
Isolation Capacitance
Input-output capacitance at 100kHz/0.1V
Operating Temperature
Derating when operating temperature≥85℃,
(see Fig. 2)
Isolation
Storage Temperature
Min.
Typ.
Max.
Unit
1500
--
--
VDC
1000
--
--
MΩ
--
20
--
pF
-40
--
105
-55
--
125
3.3VDC output
--
25
--
Others
--
15
--
--
300
℃
Case Temperature Rise
Ta=25℃
Pin Soldering Resistance
Temperature
Soldering spot is 1.5mm away from case for 10 seconds
--
Storage Humidity
Non-condensing
--
--
95
%RH
Switching Frequency
100% load, nominal input voltage
--
270
--
KHz
MTBF
MIL-HDBK-217F@25℃
3500
--
--
K hours
Mechanical Specifications
Case Material
Black plastic; fiame-retardant and heat-resistant (UL94 V-0)
Dimensions
19.65 x 6.00 x 10.16mm
Weight
2.1g(Typ.)
Cooling Method
Free air convection
Electromagnetic Compatibility (EMC)
Emissions
Immunity
CE
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
RE
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
ESD
IEC/EN61000-4-2
Air ±8kV , Contact ±4kV perf. Criteria B
Typical Characteristic Curves
3.3VDC output
Others
Fig. 1
2019.10.15-A/5
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A05_S-1WR3 & B05_LS-1WR3 Series
Fig. 2
2019.10.15-A/5
Page 3 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A05_S-1WR3 & B05_LS-1WR3 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
Vin
GND
Cin
DC DC
Cout
Cout
+Vo
Recommended capacitive load value table (Table 1)
Vin
Cin
Single Vout Cout Dual Vout Cout
(VDC)
(µF)
(VDC)
(µF)
(VDC)
(µF)
0V
-Vo
Single
+Vo
Vin
GND
Cin
DC DC
Cout
5
4.7
3.3/5
10
±5
4.7
--
--
9/12
2.2
±9/±12
1
--
--
15/24
1
±15/±24
0.47
0V
Fig. 3
2. EMC (CLASS B) compliance circuit
Fig. 4
EMC recommended circuit value table (Table 2)
Output voltage (VDC)
C1/C2
Input
voltage
5VDC
EMI
CY
3.3/5/9
4.7µF /25V
4.7µF /25V
--
1nF/4KVDC
VISHAY HGZ102MBP
TDK CD45-E2GA102M-GKA
C3
LDM
12/15/24
Refer to the Cout in table 1
6.8µH
6.8µH
Note: In the case of actual use, the requirements for EMI are high, it is subject to CY .
3. For additional information please refer to DC-DC converter application notes on
www.mornsun-power.com
2019.10.15-A/5
Page 4 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A05_S-1WR3 & B05_LS-1WR3 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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