A novel family of DC-DC PWM converters using the self-resonance principle

Obtaining soft-switching operation for PWM power converters, except for a few cases, has required either high switch voltage stresses or high switch current stresses, or both. This paper presents a new class of commutation self-resonant PWM power convertor that overcomes this great disadvantage as well as being able to operate without switching losses in high switching frequencies for a wide line and load range. The circuit diagram and the phase-plane of each power converter of a family of such converters are also presented. In order to emphasize the principal characteristics of these new converters, a study, including experimental results, is carried out in detail for the buck and zeta converters.<<ETX>>

[1]  L.C. de Freitas,et al.  The family of DC-to-DC converters using the LC-PWM-RDC cell without resonant cycle interruption: analysis simulation and experimental results , 1992, [Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.

[2]  L. C. de Freitas,et al.  A high-power high-frequency ZCS-ZVS-PWM buck converter using a feedback resonant circuit , 1993 .

[3]  F. Lee,et al.  Novel zero-voltage-transition PWM converters , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[4]  H.L. Hey,et al.  An optimum ZVS-PWM DC-to-DC converter family: analysis, simulation and experimental results , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[5]  L.C. de Freitas,et al.  A novel ZCS-ZVS-PWM DC-DC buck converter for high power and high switching frequency: analysis, simulation and experimental results , 1993, Proceedings Eighth Annual Applied Power Electronics Conference and Exposition,.

[6]  Fred C. Lee,et al.  High-frequency quasi-resonant converter technologies , 1988, Proc. IEEE.

[7]  L.C. de Freitas.  Two new lossless commutation pulse-width modulated cells using resonant disconnecting circuit and the corresponding families of DC-to-DC converters , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.