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A Novel Multi-Element Resonant Converter with Self-Driven Synchronous Rectification
oleh: Jing-Yuan Lin, Yi-Feng Lin, Sih-Yi Lee
Format: | Article |
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Diterbitkan: | MDPI AG 2019-02-01 |
Deskripsi
This paper proposes a novel multi-element resonant converter with self-driven synchronous rectification (SR). The proposed resonant converter can achieve a zero-voltage-switching (ZVS) operation from light load to full load, meanwhile, the zero-current-switching (ZCS) can achieve rectifiers of a secondary-side. Therefore, the switching losses can be significantly reduced. Compared with an LLC resonant converter, the proposed resonant converter can be effective to decrease the circulating energy through the primary-side of the transformer to output a load and provide a wide voltage gain range for over-current protection as well as decreasing the inrush current under the start-up condition. Moreover, the proposed converter uses a simple current detection scheme to control the synchronous rectification switches. A detailed analysis and design of this novel multi-element resonant converter with self-driven synchronous rectification is described. Finally, a DC input voltage of 380-V<sub>DC</sub> and an output voltage/current of 12-V<sub>DC</sub>/54-A for the resonant converter prototype is built to verify the theoretical analysis and performance of the proposed converter.