ATAVRFBKIT: Dimmable Fluorescent Ballast

Summary

Fluorescent ballast topology usually includes line conditioning for CE and UL compliance, a power factor correction block including a boost converter to 400 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 lamp (reducing the frequency). Once the lamp is lit, varying the frequency will dim the light. The Atmel AT90PWM2B/216 microcontroller can be programmed to perform all of these functions.

Specifications

Manufacturer Microchip Technology
Category Lighting
Sub-Category CFL Ballasts
Eval Board Board not Stocked
Outputs and Type 2 T8 Lamps
Voltage In 90 ~ 265 VAC
Features DALI Interface
Dimming Control
PFC
Swiss Interface
Output Power 18 W, up to 2 type T8 lamps
Component Count + Extras 177 + 11
Design Author Atmel
Main I.C. Base Part AT90PWM216
AT90PWM2B
Date Created By Author
Date Added To Library 2025-10

Support Documents & Media

ATAVRFBKIT - User Guide

Media

ATAVRFBKIT_Schematic.JPG ATAVRFBKIT_Board.JPG