B0303LS-1WR2_15 Datasheet, PDF (4/5 Pages) MORNSUN Science& Technology Ltd. – DC/DC Converter

DC/DC Converter
A_S-1WR2 & B_LS-1WR2 Series
Temperature Derating Curve
120
100
80
60
Safe Operating Area
40
20
0
-40
0
40
85 105
Ambient Te mp.(℃)
Fig. 2
Efficiency Vs Input Voltage (Full load)
100
95
90
85
80
A0505S-1WR2
75
70
65
60
55
50
4.5 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 Output Load(Vin=5V)
100
90
80
A0505S-1WR2
70
60
50
40
30
20
10
0
10 20 30 40 50 60 70 80 90 100
Output Current Percentage (%)
Efficiency Vs Input Voltage (Full Load)
100
95
90
85
80
A2415S-1WR2
75
70
65
60
55
50
21.6 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.4
Input Voltage (V)
Efficiency Vs Output Load(Vin=24V)
100
90
80
A2415S-1WR2
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)
Cin Single Vout Cout Dual Vout Cout
(μF)
(VDC) (μF) (VDC)
(μF)
3.3/5
4.7
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
--
--
--
--
It is not recommended to connect any external capacitor when
output power is less than 0.5W.
2015.04.20-B/0
Page 4 of 5
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