ANALYSIS OF RESONANT LLC DC-DC CONVERTER

Abstract

This paper introduces a new -segment interleaved flying-capacitor LLC converter topology with high output present day applications. as compared to a traditional -section LLC converter, the new converter provides a single capacitor that contributes to lower voltage stress at the number one facet’s switches, mechanically balances the modern distribution between the phases and enhances the strength processing abilities. all the attractive features of LLC converters are preserved, which include zero-voltage switching on the number one facet’s MOSFETs, 0-cutting-edge switching at the secondary side’s power gadgets, slim switching frequency variety and easy layout. full principle of operation and analysis of the converter are defined, as well as the converter’s primary characteristics and the impact of non-best components on the modern-day sharing conduct. A 600W, 400V-to-12V experimental prototype is used as a showcase of the appealing functions of the new converter, demonstrating superb current sharing, simple implementation and excessive performance of up to 97.3%. Index terms :Multi-level converters, Resonant power conversion, current sharing, LLC Converters.