| 摘要 |
<p>A first resonant circuit composed of Lr-Cr and a second resonant circuit composed of Lrs-Crs are caused to resonate with each other to cause sympathetic vibration of each resonant circuit, and thereby power transmission is performed by utilizing two types of coupling, namely, magnetic field coupling and electric field coupling between a primary winding (np) and a secondary winding (ns). In addition, operation at a switching frequency higher than a specific resonant frequency of an overall multi-resonant circuit allows a ZVS operation to be performed, enabling a significant reduction in switching loss and high-efficiency operation. Thus provided is a switching power supply device with reduced size and increased power conversion efficiency.</p> |
