Data Brief

For further information contact your local STMicroelectronics sales office.

October 2006

Rev 1

1/4

4

STEVAL-ISA016V1

Power supply for STB based on L6565 (EU-220V)

Features

Supply

stability

with

of stability

General description

This document describes a reference design of a

17W Switch Mode Power Supply dedicated to

Set-Top Box applications. The board accepts

European input voltages (90 to 265Vrms) and

delivers up to 6W outputs. It is based on the

L6565 quasi resonant SMPS controller, working in

variable frequency mode.

The Quasi-resonant operation and the high

flexibility of the L6565 make it a very suitable

device, able to satisfy all the requirements with

only few external components.

ST components

800V

Rectifier Diode, 2A, 200V

3A, 40V

2.5A

output, very low dropout voltage regulator

SuperMESH Power MOSFETs, 800V, 3.2

Ohm, 2.5A

STEVAL-ISA016V1

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