This document describes a 20W dimmable CFL ballast solution that can completely replace incandescent lamps in formal dimming systems. The dimmer controlled range is 20% - 100% of full light output without changing the formal triac dimmer. Compared to the formal CFL solution, this solution not only provides energy savings, but also higher reliability and a much longer operating life.
The document presents a compact fluorescent lamp (CFL) ballast solution designed for use with standard triac dimmers. Unlike traditional CFLs that fail or flicker under dimmer control, this design allows the lamp power to be adjusted from 20% to 100% of full illumination without changing the existing dimmer hardware. The solution is based on the L6574D high-performance ballast driver and includes a power factor correction (PFC) circuit.
| Power rating | 20 W |
|---|---|
| Dimming range | 20% - 100% |
| Driver IC | L6574D |
| MOSFET type | STD4NK50Z Zener protected SuperMESH Power MOSFETs |
| Rectifier type | STTH1L06 turbo 2 ultra fast high voltage rectifiers |
Yes, it can completely replace incandescent lamps in formal dimming systems.
The lamp power can be dimmed from below 20% up to 100% of full illumination.
No, it works without changing the formal triac dimmer.