IXDN0036 datasheet(5/41 Pages) IXYS

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Introduction

ATAVRFBKIT / EVLD001 User Guide

1-3

7597A–AVR–02/06

1.1

General

Description

Fluorescent ballast topology usually includes line conditioning for CE and UL compli-

ance, a power factor correction block including a boost converter to 380 V for universal

input applications and a half bridge inverter. By varying the frequency of the inverter, the

controller will preheat the filaments (high frequency), then ignite the tube (reducing the

frequency). Once the tube is lit, varying the frequency will dim the light. The Atmel

AT90PWMx microcontroller can be programmed to perform all these functions.

Figure 1-2. Ballast Demonstrator Board

1.2

Ballast

Demonstrator

Features

• Automatic microcontroller dimmable ballast

• Universal input – 90 to 265 VAC 50/60 Hz, 90 to 370 VDC

• Power Factor Corrected (PFC) boost regulator

• Power feedback for stable operation over line voltage range

• Variable frequency half bridge inverter

• 18W, up to 2 type T8 lamps

• Automatic dimmable single lamp operation

• Automatic detection of Swiss, DALI, or 0 – 10V dimming control

• Very versatile power saving options with microcontroller design for most functions

IXDN0036 bảng dữ liệu(PDF) 5 Page - IXYS Corporation