公开(公告)号：US20230412129A1

公开(公告)日：2023-12-21

申请号：US18206331

申请日：2023-06-06

Applicant: STMicroelectronics S.r.l.

Inventor： Edoardo BOTTI ,  Francesco STILGENBAUER ,  Marco RAIMONDI ,  Elena CUSSOTTO

IPC: H03F3/217

CPC classification number: H03F3/2173 ,  H03F2200/03 ,  H03F2200/171 ,  H03F2200/351

Abstract: A switching circuit includes first and second half bridges supplying an electrical load via filter networks. During alternate switching sequences a first transistor pair (high-side in one half bridge and low-side in the other half bridge) is switched to a non-conductive state, and a second transistor pair (high-side in the other half bridge and low-side in the one half bridge) is switched to a conductive state. A current flow line is provided by an inductance, a first switch and a second switch between outputs of the half bridges. In a medium-high power mode, the first and second switches are in the conductive state between switching the first pair of transistors to the non-conductive state and the second pair of transistors to the conductive state. In a low or quiescent power mode, switching the first and second switches to the conductive state is refrained due to application of a longer delay.