Title :
Highly efficient LED light driver with dimming control using delta sigma modulation
Author :
Yoo, Sooyeub ; Um, Keehong ; Kim, HyungJun
Author_Institution :
Dept. of R&D, Taesung Eco. Tech. Ltd., South Korea
Abstract :
This paper describes the LED dimming control system using ADPCM (adaptive differential pulse code modulation). ADPCM accurately controls the LED current with high resolution. The ADPCM also reduces the RFI (radio frequency intensity) because of spreading out the harmonic current of pulses. Additionally, this method makes it easier to increase the control accuracy.
Keywords :
differential pulse code modulation; driver circuits; light emitting diodes; lighting control; LED light driver; adaptive differential pulse code modulation; delta sigma modulation; dimming control; harmonic current; high resolution; radio frequency intensity; Adaptive control; Adaptive systems; Control systems; Delta-sigma modulation; Light emitting diodes; Lighting control; Modulation coding; Programmable control; Pulse modulation; Radiofrequency interference;
Conference_Titel :
Telecommunications Energy Conference, 2009. INTELEC 2009. 31st International
Conference_Location :
Incheon
Print_ISBN :
978-1-4244-2490-0
Electronic_ISBN :
978-1-4244-2491-7
DOI :
10.1109/INTLEC.2009.5351852
