Comparison of resonant topologies for step-down applications using piezoelectric transformers

  title={Comparison of resonant topologies for step-down applications using piezoelectric transformers},
  author={F. E. Bisogno and Matthias Radecker and Armin Knoll and A. V. Carazo and A. Riedlhammer and Gerald Deboy and N. Norvez and J. M. Pacas},
  journal={2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551)},
  pages={2662-2667 Vol.4}
A 1 to 5 Watts wide-range power supply demonstrator with a transoner-type piezoelectric transformer (PT) has been built in class E topology to show the full functionality of an off-line power supply. A basic design target was the ZVS or near-ZVS behaviour, which was achieved for 3 Watts and 6 V output at input voltages between 85 and 260 V AC, and for 5 Watts and 6 V output at Vin = 150 to 260 V AC, respectively, using one and the same PT sample. The PT was 2.3 mm thick, and had a diameter of… CONTINUE READING
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