公开(公告)号：US20140167571A1

公开(公告)日：2014-06-19

申请号：US14237432

申请日：2012-08-03

申请人： Kaspar Sinding Meyer

发明人： Kaspar Sinding Meyer

IPC分类号： H01L41/107

CPC分类号： H01L41/107

摘要： The present invention relates to a piezoelectric transformer comprising an elongate piezoelectric ceramic body adapted to operate in fundamental thickness mode. The elongate piezoelectric ceramic body comprises a central input or primary section coupled to adjacently arranged first and second output sections. High power conversion efficiency and zero-voltage switching capability is achieved by providing a primary side effective electromechanical coupling factor keff—P, which is larger than a secondary side electromechanical coupling factor, keff—S.

摘要翻译： 本发明涉及一种压电变压器，其包括适于在基本厚度模式下操作的细长压电陶瓷体。 细长压电陶瓷体包括耦合到相邻布置的第一和第二输出部分的中心输入或初级部分。 通过提供大于次级侧机电耦合因子keff-S的初级侧有效机电耦合因子keff-P来实现高功率转换效率和零电压切换能力。