September 2012

Doc ID 15394 Rev 1

1/27

AN2934

Application note

STEVAL-ISA062V1: 6 W, wide-range dual and single output SMPS

demonstration board based on the VIPer17

By John Lo Giudice

Introduction

The new VIPer17 device is a converter that offers a PWM controller built in BCD6

technology and an 800 V, avalanche-rugged vertical power section all in one package. The

converter is housed in a DIP7 or surface-mount SO-16 narrow package. The device has two

fixed switching frequencies: the VIPer17LN switches at 60 kHz and the VIPer17HN at

115 kHz. The device can deliver 6 W from wide-range operation from 85 to 305 Vac. It can

also deliver 10 W when operating from the European range of 175 to 264 Vac.

The VIPer17 incorporates the following additional features in high demand from customers.

supply standby wattage as low as 50 mW at no load

diode

Not all of these additional features are necessary to operate the converter and some may be

omitted to reduce part count.

Figure 1.

VIPer17 dual output demonstration board

AM03418v1

www.st.com