Datasheet

User's Guide

SLOU293C–June 2010–Revised September 2012

A 600-W, Isolated PFC Power Supply for AVR Amplifiers

Based on the TAS5630 and TAS5631

This user guide documents a low-profile power supply that is suitable for AVR amplifiers or other high

power amplifier applications. The power supply accepts an ac line-input voltage (108 VRMS to 265

VRMS), and produces an output voltage of 50-VDC for loads up to 12 A (600 W).

1 Introduction

The power supply is dedicated to Audio applications and more specific the TAS5630/TAS5631 from Texas

Instruments. The difference compared to an industrial grade power supply is the typical user pattern of an

audio-system. First, music is dynamic with a crest factor typically in the range of 1/10 to 1/5 (Highly

compressed music). Second, the user pattern of a normal audio system, runs most of the time in low

power mode (<5W) playing "background" music.

This information has been considered when designing the SMPS for the TAS5630.

An explanation of the features and functions has been provided. Indications are provided where the

normal procedures regarding power supply design has been modified to accommodate the audio-

application.

A 600-W, Isolated PFC Power Supply for AVR Amplifiers Based on the SLOU293C–June 2010–Revised September 2012

TAS5630 and TAS5631

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