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RD0801

1. Overview

The IRPLDIM4E Reference Design is a miniature dimmable electronic ballast for driving

26W compact fluorescent lamps from a 220VAC line. The circuit provides all of the

necessary functions for preheat, ignition, and dimming control of the lamp and also

includes the EMI filter and AC rectification stage. The ballast size is 1.42in x 2.44in

(36mm x 62mm).

IRS2530D includes adjustable preheat time, frequency sweeping for filament preheating

and lamp ignition, a dimming reference and feedback input, a high soft-start frequency to

avoid lamp flash, lamp and ballast fault protection for open filament condition, failure to

strike, and no lamp fault conditions, automatic restart during lamp exchange, and, low

AC line protection. The IRS2530D is simple to use, has only 8 pins, and drastically

reduces component count for a complete dimming solution.

2. Features

Closed-loop dimming control

Programmable preheat time

Frequency sweep for filament preheat and lamp ignition

Open filaments and no-lamp protection

Failure to strike and deactivated-lamp protection

Low AC line protection

Lamp exchange auto restart