DESCRIPTION

· The IR21592/IR21593 are integrated dimming ballast controllers and 600V half-bridge drivers.

· Features phase control for transformer-less lamp power sensing and regulation.

· Designed to minimize modifications needed for adapting non-dimming ballasts to dimming.

· Includes a voltage-controlled oscillator with externally programmable minimum frequency.

· Available in 16-pin DIP and 16-pin narrow body SOIC packages.

FEATURES

· Combines ballast control and half-bridge driver in one IC.

· Transformer-less lamp power sensing and closed-loop lamp power control.

· Programmable preheat time, current, and ignition-to-dim time.

· Dimming control input from 0.5 to 5VDC.

· Comprehensive lamp fault protection including filament failures and thermal overload.

· Features like automatic restart, micro-power startup, and over-temperature protection.

APPLICATIONS

· Suitable for designing dimmable electronic ballasts for fluorescent lamps.

· Ideal for applications requiring precise control over lamp power and dimming functionality.

· Used in systems where protection against lamp failure and thermal overload is crucial.

· Applicable in environments needing robust and flexible lighting control solutions.