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http://dx.doi.org/10.5762/KAIS.2010.11.2.476

A study on High Frequency DC-DC Converter Drive using a Piezoelectric Transformer  

Hwang, Lark-Hoon (Dept. of Electrical Engineering, Semyung University)
Na, Seung-Kwon (Dept. of Biomedical Engineering, Korea Polytechnic III College)
Choi, Gi-Ho (Dept. of Electrical Control Engineering, Korea Polytechnic III College)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.2, 2010 , pp. 476-484 More about this Journal
Abstract
Recently, as the piezoelectric transformer technology develops, piezoelectric transformer may become a variable alternative to magnetic transformers in various applications. Because it was have to favorable characteristics such as electromagnetic-noise free, compact size, higher efficiency, and superior power density, linkage flux, noiseless, etc. its resonance frequency was used to output waveform of a sine wave. In this paper, the switching mode power supply of about 87.2[KHz] is driven by the multilayer thickness vibration mode piezoelectric transformer and the DC to DC converter drive circuit using an electrical equivalent circuit is proposed. Also, it was possible to drive power source device of the high-luminance LED by propose circuits.
Keywords
Higher Efficiency; Multilayer Thickness Vibration Mode Piezoelectric Transforme; High-luminance;
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