High-intensity discharge (HID) lamps offer better lumen efficiency, color rendering and focusing capability, as well as longer life, compared to low-pressure fluorescent lamps. Their superior performance makes them popular for hotel and restaurant lighting, shops, stadiums, street lighting, industrial and workshop lighting, office and home lighting. 

For the same reasons, they are increasingly used now in vehicle headlights.
Electronic ballasts are preferred to electromagnetic ballasts because of increased lamp life, lower power losses, the absence of the 50 Hz flicker in the light and greater reliability resulting from the end-of-life protection.
Key enabling products from ST are:
  • Dedicated light ignition circuit
  • 8-bit microcontrollers
  • IGBTs
  • High voltage Power MOSFETs
  • Ultrafast rectifiers
  • PWM and PFC controllers
  • IGBT / MOSFET Driver ICs