Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Engineering
Analysis And Implementation Of A Synchronous Buck Converter Used As An Intermediate Stage Of An Hid Ballast, Sergey V. Vernyuk
Analysis And Implementation Of A Synchronous Buck Converter Used As An Intermediate Stage Of An Hid Ballast, Sergey V. Vernyuk
ETD Archive
The contribution of this thesis is the analysis of a Synchronous Buck converter, used as the second stage (which controls the current through the lamp, and consequently, the lamp power) in a 3-stage High-Intensity Discharge (HID) ballast. Where previously standard Buck converters were used, this new application of the Synchronous Buck converter to a medium-power lighting ballast improves efficiency by operating the converter in a new, modified critical-conduction mode to achieve soft-switching and improve efficiency significantly. The converter and 2-loop controller will be analyzed in the three HID lamp modes of operation: open circuit, short circuit, and power control mode. …