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RD0802

1. Features

Drives 25W CFL Lamp

Input Voltage: 220VAC

High Frequency Operation

Lamp Filament Preheating

Lamp Fault Protection with Auto-Restart

Low AC Line/Brownout Protection

Microcontroller driven 4 level power pulse dimming

IRS2530D DIM8

2. Overview

The IRPLDIM5E reference design kit consists of a dimming fluorescent ballast, with a

microcontroller driven dimming control system providing four fixed levels and actuated

by power re-cycle pulses of less than one second, driving a single 25W CFL lamp. The

This demo board is intended to help with the evaluation of the IRS2530D (DIM8

dimming ballast control IC, demonstrate PCB layout techniques and serve as an aid in

the development of production ballasts using the IRS2530D.

EMI Filter

Half-Bridge Driver

Rectifier

Lamp Fault

Line

Microcontroller

Dimming Feedback

Pulse Detect

DIM8 Ballast Control

Output Stage

Lamp

Figure 2.1: IRPLDIM5E Block Diagram