High-Power Long-Life Compact Fluorescent Lamp / Tube lamp Controller

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:

High Power Long Life Compact Fluorescent Lamp Tube lamp Controller1 circuit schematic diagram


  • 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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