E0312S-1WR2_15 Datasheet, PDF (4/5 Pages) MORNSUN Science& Technology Ltd. – DC/DC Converter

DC/DC Converter
E_S-1WR2 & F_S-1WR2 series
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 Output
Vin
Cin
GND
DC DC
+Vo
Cout
0V
Cout
-Vo
Single Output
Vin
Cin
GND
DC DC
Fig.3
+Vo
Cout
0V
2. EMC typical recommended circuit (CLASS B)
Recommended capacitive load value table (Table 1)
Vin
(VDC)
3.3/5
9/12
15
24
Cin Slngle Cout Dual Cout
(µF) output (µF) output (µF)
(VDC)
(VDC)
4.7 3.3/5/9 10 ±3.3/±5 4.7
2.2
12
2.2 ±9/±12 1
2.2 15/24
1 ±15/±24 0.47
1
--
--
--
--
LDM
Vin
Vin
+Vo
C1
DC/DC _C2 LOAD
Input voltage(VDC)
C1
EMI
C2
3.3/5/9/12/15/24
4.7µF /50V
Refer to the Cout in Fig.3
GND
GND
-Vo
(0V)
LDM
6.8µH
Fig. 4
Note: It is not needed to add the component in the peripheral circuit when
parameter with the symbol of "--"
3. Output load requirements
In order to ensure the converter can work reliably with high efficiency, the minimum load should not less than 10% rated load when it is
used. If the needed power is indeed small, please parallel a resistor on t the output side ( The sum of the efficient power and resistor
consumption power is not less than 10%).
4. For more information please find the application notes on www.mornsun-power.com
2015.09.21-B/0
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