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Piezoelectric Transformer Converter with PWM Control
Toshiyuki ZAITSU Tamotsu NINOMIYA Masahito SHOYAMA
IEICE TRANSACTIONS on Communications
Publication Date: 1997/07/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Power Supply
piezoelectric transformer, DC-DC converter, PWM control, active-clamp,
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A piezoelectric transformer (PT) converter with PWM control is presented. The combination of an active-clamp circuit and a resonant circuit makes it possible to control the output voltage of the PT converter with PWM at a constant switching frequency. The PT converter circuit is evaluated using an AC analysis, and a design procedure is presented. The PT converter implemented on a printed circuit board is experimentally evaluated and a good controllability is successfully achieved.