A buck quadratic PWM soft-switching converter using a single activeswitch |
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| Authors: | dos Reis Barbosa L Vieira JB Jr de Freitas LC da Silva Vilela M Farias VJ |
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| Affiliation: | Dept. de Engenharia Eletrica, Univ. Fed. Uberlandia; |
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| Abstract: | High-switching frequency associated with soft commutation techniques is a trend in switching converters. Following this trend, a buck pulsewidth modulation (PWM) converter is presented. The DC voltage conversion ratio of this converter has a quadratic dependence on duty cycle, providing a large stepdown. This new buck quadratic PWM soft-single-switched converter, having only a single active switch, provides a high efficient operating condition for a 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 |
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