A novel non-isolated step-down converter with low switch voltage stress

ABSTRACT

This article is aimed at introducing a novel non-isolated step-down converter with superior advantages including reduced voltage stress on switching, enhanced efficiency as well as reduced number of required components. Improved distribution of voltage among several switches mitigates the stress exerted upon individual switches, thereby inflicting reduced voltage MOSFETS with smaller ON resistance. To show the superiority of the introduced converter over other converters of this kind through comparison, ON-OFF switching operations of two switches are performed under ZVS conditions, and as a result, a reduced switching loss is observed which is a proof for optimised efficiency. Finally, the design formula and simulations of the converter operating modes are discussed.

KEYWORDS:

• Step-down converter
• non-isolated DC to DC converter
• low switch voltage stress
• zero voltage switching
• high efficiency

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

This work was supported by the Islamic Azad University, Isfahan (Khorasgan) Branch [0000].