Title :
New zero-voltage-switching constant-frequency PWM DC/DC convertor with low switch stress and wide linearity
Author :
Kim, I.D. ; Nho, E.C. ; Cho, Gook Hwa
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
A new zero-voltage-switching (ZVS) DC/DC convertor which operates on constant frequency and has wide linearity is proposed. ZVS operations are achieved not only for the primary switches but also for the secondary rectifier diodes to reduce the switch stresses and losses. The proposed convertor also overcomes the other shortcomings of the conventional resonant DC/DC convertors such as high VA ratings of devices and passive components, load-dependent DC characteristics, etc.
Keywords :
DC transformers; power convertors; pulse width modulation; switched mode power supplies; switching circuits; PWM; low switch stress; wide linearity; zero voltage switching DC/DC converter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900848
