E0503S-2WR2_15 Datasheet, PDF (4/5 Pages) MORNSUN Science& Technology Ltd. – DC/DC Converter

DC/DC Converter
E_S-2WR2 & F_S-2WR2 series
Efficiency Vs Input Voltage (Full Load)
100
95
90
F0505S-2WR2
85
80
75
70
65
60
55
50
4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
Input Voltage (V)
Efficiency Vs Input Voltage (Full Load)
100
95
90
85
F1212S-2WR2
80
75
70
65
60
55
50
11.0 11.3 11.5 11.8 12.0 12.2 12.5 12.7 13.0 13.2
Input Voltage (V)
Efficiency Vs Output Load(Vin=5V)
100
90
F0505S-2WR2
80
70
60
50
40
30
20
10
0
10 20 30 40 50 60 70 80 90 100
Output Current Percentage (%)
Efficiency Vs Output Load (Vin=12V)
100
90
F1212S-2WR2
80
70
60
50
40
30
20
10
0
10 20 30 40 50 60 70 80 90 100
Output Current Percentage (%)
Design Reference
1. Typical application
If it is required to further reduce input and output ripple, a filter capacitor can be connected to the input and output terminals, see Fig.3.
Moreover, choosing suitable filter capacitor is very important , start-up problems may be caused by too large capacitance. To ensured the
modules running well, the recommended capacitive load values as shown in Table 1.
Dual
Vin
Cin
GND
Single
Vin
Cin
GND
DC DC
DC DC
Fig.3
+Vo
Cout
0V
Cout
-Vo
+Vo
Cout
0V
Recommended capacitive load value table (Table 1)
Vin
(VDC)
5
12/15
24
Cin Single Vout Cout
(μF)
(VDC)
(μF)
4.7
3.3/5
10
2.2
9/12
2.2
1
15/18/24
1
Dual Vout
(VDC)
±3.3/±5
±9/±12
±15/±24
Cout^#
(μF)
4.7
1
0.47
Note: ^#The capacitive loads of positive and negative outputs are the same..
2. EMC typical recommended circuit (CLASS B)
LDM
Vin
Vin
+ Vo
C1
C2 ^DC/DC
C3 ^LOAD
G ND
GND
- Vo
(0V)
Input voltage (VDC)
C1/C2
CY
EMI
C3
LDM
5/12/15
24
4.7μF/50V
--
1nF/3KV
Refer to the Cout in Fig.3
6.8μH
CY
Fig. 4
Note: 1. 24V input series, is subject to CY (CY : 1nF/3KV).
2. It is not needed to add the component in the peripheral circuit when
parameter with the symbol of "--".
3. Output load requirements
To ensure the module work efficiently and reliably, during the operation, the min. output load should be no less than 10% of the full load. If the
actual output power is low, please connect a resister to the output terminal in parallel, with a recommenced resistance which is 10% of the
rated power, and derating is required during operation.
4. For more information please find the application notes on www.mornsun-power.com
2015.04.17-A/2
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