Title :
A buck quadratic PWM soft-switching converter using a single active switch
Author :
Barbosa, L.R. ; Vieira, J.B., Jr. ; de Freitas, L.C. ; Vilela, M.S. ; Farias, V.J.
Author_Institution :
Dept. de Engenharia Eletrica, Univ. Federal de Uberlandia, Brazil
Abstract :
High switching frequency associated to soft commutation techniques is a trend in switching converters. Following this trend a buck PWM converter is presented. The DC voltage conversion ratio of this converter has a quadratic dependence on duty-cycle, providing a large step-down. This new buck quadratic PWM soft-single-switched converter, having only a single active switch, provides high efficient operating condition for wide load range at high switching frequency. In order to illustrate the operating principle of this new converter a detailed study, including theoretical analysis, relevant equations and simulation and experimental results is carried out
Keywords :
PWM power convertors; switching circuits; DC voltage conversion ratio; buck quadratic PWM soft-switching converter; duty-cycle; high efficient operating condition; high switching frequency; single active switch; Analytical models; Buck converters; Equations; Frequency conversion; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Switching frequency; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548561
