公开(公告)号：US10862472B1

公开(公告)日：2020-12-08

申请号：US16508896

申请日：2019-07-11

Applicant: Infineon Technologies AG

Inventor： Markus Zannoth ,  Matthias Bogus ,  Christian Heiling ,  Ivan Muhoberac

IPC: H03K17/06 ,  H02P27/06 ,  H02M7/5387 ,  H02M1/08 ,  H02M1/00

Abstract: In accordance with an embodiment, a method includes monitoring a first voltage across a buffer capacitor; activating a first current path between a power supply node and the buffer capacitor when the monitored first voltage is below a first threshold voltage, activating a second current path between the power supply node and the buffer capacitor when the monitored first voltage is below a second threshold voltage, and transferring power from the buffer capacitor to a driver circuit coupled across the buffer capacitor.