AN1514

VIPer application examples

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impact on the efficiency.

The output rectifier diodes are both fast diodes: D1 is a high voltage diode since it has to

sustain a reverse voltage given by the input DC bus voltage while D2 is a low voltage diode.

The part list of the proposed circuit is given in Table 2. In Figure 4 the board layout is shown

and Figure 5 shows the lab prototype.

Table 2.

Component list

Reference

Value

Description

10

Ω 1/2 W

10 K

Ω 1/4 W

Rburden

4.7 K

Ω 1/4 W

4.7 µF, 450 V

Electrolytic capacitor

33 µF, 50 V

Electrolytic capacitor

100 µF, 16 V

Electrolytic capacitor

1 µF, 25 V

Electrolytic capacitor

22 nF

Ceramic capacitor

Diode 1N4007

Diode BA159 (fast)

Diode 1N4148 (fast)

Diode 1N4004

22 V Zener

27 V Zener

5.6 V Zener

L

1.5 mH

470 µH

Inductor

IC1

STMicroelectronics VIPer12A-E