IR21592 Description
The IR21592/IR21593 are plete 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.
IR21592 Key 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