20W Dimmable CFL ballast based on L6574


Demonstration Board based on L6574

This demonstration board represents a 20W dimmable CFL (compact fluorescent lamp) ballast design which can completely replace incandescent lamps in dimming systems. The controlled dimming range is from below 20% up to 100% of full light output without changing the triac dimmer. Compared to formal CFL designs, this dimmable design provides not only energy savings, but also higher reliability and significantly longer operating life. It is based on the high performance ballast driver L6574, two STD4NK50Z power MOSFETs, a Zener-protected SuperMESH™ power MOSFET and two STTH1L06 Turbo 2 ultrafast high-voltage rectifiers.

Lamp base: E27
Wattage: 20W (3U T3 lamp)
Input voltage range: 180 to 264Vac
Lumen output: 1300lm
Dimming range: 20% to 100%
Energy label: Class A
Efficiency >80% at wide range input

PWM (Pulse Width Modulation) Controllers, STMicroelectronics

Attribute Value
Wattage 20 W
Number of Lamps 1
Ballast Type Electronic
Supported Lamp Shape Tubular
Supported Lamp Type Compact Fluorescent
Voltage Rating 264 Vac
Dimmable Yes
High Frequency No