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B1212S-2WR2 Datasheet(PDF) 4 Page - MORNSUN Science& Technology Ltd.

Part # B1212S-2WR2
Description  DC/DC Converter
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Manufacturer  MORNSUN [MORNSUN Science& Technology Ltd.]
Direct Link  http://www.mornsun-power.com
Logo MORNSUN - MORNSUN Science& Technology Ltd.

B1212S-2WR2 Datasheet(HTML) 4 Page - MORNSUN Science& Technology Ltd.

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DC/DC Converter
A_S-2WR2 & B_S-2WR2 series
2015.04.20-A/2
Page 4 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
B0505S-2WR2
50
55
60
65
70
75
80
85
90
95
100
4.5 4.6 4.7 4.8 4.9
5 5.1 5.2 5.3 5.4 5.5
Input Voltage(V)
Efficiency Vs Innput Voltage (Full Load)
B0505S-2WR2
0
10
20
30
40
50
60
70
80
90
100
10
20
30
40
50
60
70
80
90 100
Output Current Percentage(%)
Efficiency Vs Output Load(Vin=5V)
B1212S-2WR2
50
55
60
65
70
75
80
85
90
95
100
10.8 11.1 11.4 11.7 12.0 12.3 12.6 12.9 13.2
Input Voltage(V)
Efficiency Vs Input Voltage (Full Load)
B1212S-2WR2
0
10
20
30
40
50
60
70
80
90
100
10
20
30
40
50
60
70
80
90
100
Output Current Percentage(%)
Efficiency Vs Output Load(Vin=12V)
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.
Vin
GND
+Vo
0V
DC
Cin
DC
Cout
Cout
-Vo
Dual Output
Single Output
Vin
GND
+Vo
0V
DC
Cin
DC
Cout
Fig.3
Recommended capacitive load value table (Table 1)
Vin
(VDC)
Cin
(μF)
Single Vo
(VDC)
Cout
(μF)
Dual Vo
(VDC)
Cout
(μF)
54.7
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
--
--
--
--
2. EMC typical recommended circuit (CLASS B)
Vin
GND
+Vo
-Vo
(0V)
DC/DC
LOAD
LDM
C1
Vin
GND
C3
C2
CY
Fig. 4
Input voltage (VDC)
5/9/12/15
24
EMI
C1/C2
4.7μF /50V
CY
--
1nF/2KV
C3
Refer to the Cout in Fig.3
LDM
6.8μH
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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