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www.irf.com

International Rectifier

• 233 Kansas Street, El Segundo, CA 90245 USA

Features

! Drives:

1 x 32W T8 Lamp

! Input:

90-140VAC/60Hz

! High Power Factor/Low THD

! High Frequency Operation

! Lamp Filament Preheating

! Lamp Fault Protection with Auto-Restart

! Brownout Protection

! IR21592 HVIC Ballast Controller

Description

The IRPLDIM1U is a high efficiency, high power factor, dim-

ming electronic ballast designed for driving rapid start fluo-

rescent lamp types. The design contains an EMI filter, ac-

tive power factor correction and a ballast control circuit us-

ing the IR21592. This demo board is intended to ease the

evaluation of the IR21592 Dimming Ballast Control IC,

demonstrate PCB layout techniques and serve as an aid

IR21592 Dimming Ballast Control IC Design Kit

in the development of production ballast’s using the IR21592.

IRPLDIM1U

EMI Filter

Half-Bridge Driver

Rectifier

Lamp Fault

Line

IR21592

Dimming Feedback

Preheat Feedback

Interface

Dim

Input

PFC

Output Stage

Lamp

Dimming Ballast

Block Diagram

IR21592