Description

The IR21592/IR21593 are complete dimming ballast controllers and 600V half-bridge drivers all in one IC. The architecture includes phase control for transformer-less lamp power sensing and regulation which minimizes changes needed to adapt non-dimming ballasts for dimming.

Features

•Ballast control and half-bridge driver in one IC

•Transformer-less lamp power sensing

•Closed-loop lamp power control

•Closed-loop preheat current control

•Programmable preheat time

•Programmable preheat current

•Lamp ignition detection

•Programmable ignition-to-dim time

•0.5 to 5VDC dimming control input

•Min and max lamp power adjustments

•Programmable minimum frequency

•Internal current sense blanking

•Full lamp fault protection

•Brown-out protection

•Automatic restart

•Micro-power startup

•Zener clamped Vcc

•Over-temperature protection

•16-pin DIP and SOIC package types