Simple Circuit Diagram

We can use UBA2021 for 600 V lamp controller and half-bridge driver IC for high-power. The UBA2021 is a long-life CFL/TL applications. It’s equipped with over-power protection to delivers constant light output and improves safety. A driver circuit for an external half-bridge, an oscillator, and a control circuit for starting, preheating, ignition, lamp burning, and protection are included. A demo board for 230 VAC is available for this device. It’s also equipped with calculation tool. Here’s the circuit diagram:

Highlights:

• Lamp power independent from mains voltage variations
• Overpower protection
• Lamp temperature stress protection at higher mains voltages
• Capacitive mode protection
• Adjustable preheat ignition time
• Adjustable preheat current
• Adjustable lamp power
• Protection against a drive voltage that is too low for the power MOSFETs
• SO14 and DIP14 packages

[Source: NXP Application Note]

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