Lighting component with independent DC-DC converters

摘要

The present disclosure relates to a lighting component with multiple DC-DC converters. Each of the DC-DC converters is used to independently drive a corresponding string of LEDs. In general, rectifier circuitry receives an AC power signal and generates a rectified signal, which is provided to first and second converter circuitries. The first converter circuitry converts the rectified signal into a first drive voltage for a first string of LEDs and provides a first drive current for the first string of LEDs based on a first drive current control signal. Similarly, the second converter circuitry converts the rectified signal into a second drive voltage for a second string of LEDs and provides a second drive current for the second string of LEDs based on a second drive current control signal.

主权项

1. A system comprising:
rectifier circuitry adapted to receive an AC power signal and provide a rectified signal; first converter circuitry adapted to convert the rectified signal into a first drive voltage for a first string of LEDs and provide a first drive current for the first string of LEDs based on a first drive current control signal; and second converter circuitry adapted to convert the rectified signal into a second drive voltage for a second string of LEDs and provide a second drive current for the second string of LEDs based on a second drive current control signal.