2

RD-0613

www.irf.com

1. Features

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Drives 1 x 54 W TL5 Lamp

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Input Voltage: 90-305 VAC

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High Power Factor/Low Total Harmonic Distortion

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High Frequency Operation

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Lamp Filament Preheating

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Lamp Fault Protection with Auto-Restart After Lamp Replacement

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Low AC Line Protection

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Lamp End-of-Life Shutdown

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IRS2168D HVIC Ballast Controller

2. Description

The IRPLLNR5 reference design is a high efficiency, high power factor, fixed output, electronic

ballast designed for driving rapid-start fluorescent lamp types. The design contains an EMI filter,

active power factor correction, and a ballast control circuit using the IRS2168D(S)PbF Ballast Control

IC. This reference design is intended to ease the evaluation of the IRS2168D, demonstrate PCB layout

techniques, and serve as an aid in the development of a production-ready ballast using the IRS2168D.

Line

Input

UVLO

PFC Control

Half-Bridge Driver

Lamp Fault

Lamp

EMI Filter

Rectifier

Boost PFC

Output Stage

Control IC

Fig. 1: Ballast Block Diagram