B0503XT-W2R2 Datasheet, PDF (3/4 Pages) MORNSUN Science& Technology Ltd. – DC/DC Converter

DC/DC Converter
B_XT-W2R2 Series
Efficiency Vs Input Voltage (Full Load)
100
95
90
85
80
B1205XT-W2R2
75
70
65
60
55
50
11.0 11.4 11.6 11.8 12.0 12.2 12.4 12.6 12.8 13.2
Input Voltage(V)
100
90
80
70
60
50
40
30
20
10
Efficiency Vs Output Load(Vin=12V)
B1205XT-W2R2
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.
The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat
protection that is connected to the input or output end in series (see Fig. 4).
Vin
C in
GND
DC DC
Fig.3
+Vo
C out
0V
Vin
REG
REG
+Vo
DC DC
GND
0V
Fig.4
Recommended capacitive load value table (Table 1)
Vin(VDC)
5
12
24
Cin(μF)
4.7
2.2
1
Vo (VDC)
3.3/5
12
--
Cout(μF)
10
2.2
--
2. EMC typical recommended circuit
Vin
GND
LDM
C1
Vin
+Vo
DC/DC _C2 LOAD
GND 0V
Fig. 5
Input voltage (VDC)
C1
EMI
C2
LDM
5/12/24
4.7μF /50V
Refer to the Cout in Fig.3
6.8μH
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
2014.05.22-A/1
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