Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Comparative Analysis of Driving Inverters for the Piezo-Electric Transformer

  • Ishizuka, Yoichi (Department of Electrical and Electronic Engineering, Faculty of Engineering, Nagasaki University) ;
  • Shimokawa, Souichirou (Department of Electrical and Electronic Engineering, Faculty of Engineering, Nagasaki University) ;
  • Kurokawa, Fujio (Department of Electrical and Electronic Engineering, Faculty of Engineering, Nagasaki University) ;
  • Matsuo, Hirofumi (Sanken Electric Co., Ltd.) ;
  • Kimura, Kengo (Sanken Electric Co., Ltd.)
  • Published : 2002.07.01
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Abstract

Comparative analysis of driving inverters for piezo-electric transformer (PT) is performed and the suit- able drive circuit for portable devices such as personal digital assistants (PDA) is chosen with the experiment in this paper. As a result, a single-switch inverter with a small two winding reactor is chosen, and then the advantages of this method are clarified. It is also confirmed that the driving inverter with this method enables to realize a stabilized AC 400v output and 82% power efficiency from DC 3V input under the conditions of the variations of load current or input voltage from the experiments. Piezo-electric Transformer, Back-Light System, Single-Switch Driving Circuits, Control Method

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