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VIPer application examples

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Figure 6.

Efficiency vs. output power

2.2

Double output buck-boost converter using VIPer22A-E

The proposed power supply, shown in Figure 7, is based on VIPer22A-E. It delivers

maximum 7 W output power in wide range, according to Table 5 which lists the main

specifications of the converter. This topology is used to supply negative output voltage

referred to neutral in non isolated applications. The input stage is similar to the Buck based

application but requires a larger bulk capacitor due to the higher power level, as shown in

Table 6.

Table 3.

1

24.95

5

5.58

0

2

26.16

30

5.58

0

3

26.98

5

4.90

50

4

24.02

30

5.06

50

Table 4.

1

24.95

5

5.58

0

2

24.39

30

5.58

0

3

24.86

5

4.75

50

4

24.39

30

5.20

50