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http://dx.doi.org/10.5207/JIEIE.2016.30.1.079

A Study on the Synchronous Rectifier Driver Circuits in the LLC Resonant Half-Bridge Converter  

Ahn, Tae-Young (Dept. of Electronics Eng., Cheongju Univ.)
Im, Bum-Sun (Dept. of Electronics Eng., Cheongju Univ.)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.30, no.1, 2016 , pp. 79-86 More about this Journal
Abstract
In this paper, we propose a current-driven synchronous rectifier driver circuit for LLC resonant half-bridge converters. The proposed driver circuit detects a relatively low current in the primary side of the transformer although a large current is flowing in the secondary side. Due to this feature, the driver circuit has a simple circuit structure and stabilizes the switching operation with a logic-level switching voltages for the synchronous rectifier. The operation and performance of the proposed driver circuit are confirmed with a prototype of 1kW class LLC resonant half-bridge converter. The experimental results proved that the proposed synchronous rectifier driver method improves the power conversion efficiency by around 1% and reduces the internal power loss by 17W.
Keywords
LLC Half Bridge Converter; Synchronous Rectifier; Resonant Switching; Current Driven SR;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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