F0303D-1WR2 Datasheet, PDF (4/5 Pages) MORNSUN Science& Technology Ltd. – DC/DC Converter

DC/DC Converter
E_D-1WR2 & F_D-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 O utput
Vin
Cin
GN D
Single Ou tpu t
Vin
Cin
GN D
DC DC
DC DC
Fig.3
+Vo
Cout
0V
Cout
-Vo
+Vo
Cout
0V
Recommended capacitive load value table (Table 1)
Cin Single Cout Dual Cout
Vin(VDC)
(µF) Vout (µF) Vout (µF)
(VDC)
(VDC)
3.3/5
4.7 3.3/5 10
±5
4.7
12
2.2
12
2.2 ±12
1
15
2.2 15/24 1 ±15/±24 0.47
24
1
--
--
--
--
It is not recommended to connect any external capacitor when
output power is less than 0.5W.
2. EMC typical recommended circuit (CLASS B)
LDM
Vi n
Vin
+Vo
C1
DCDC
C2 ^LOAD
Input voltage (V)
C1
EMI
C2
LDM
3.3/5/12/15/24
4.7µF /50V
Refer to the Cout in Fig.3
6.8µH
GND
GND
-Vo
(0V)
Fig. 4
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 DC-DC converter application notes on www.mornsun-power.com
Dimensions and Recommended Layout
2014.02.20-A/0
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