公开(公告)号：US10770971B2

公开(公告)日：2020-09-08

申请号：US16428525

申请日：2019-05-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Gary Franklin Chard ,  Ariel Dario Moctezuma ,  Hasibur Rahman ,  Alex Kwasi Nyavor Titriku ,  Srinath Hosur

IPC: H02M3/158 ,  H02M3/157 ,  H02M1/00

Abstract: A system includes an inductor and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches. The controller is configured to provide an inductor charge mode, a positive boost mode, a negative boost mode, a first rest state involving the first switch, and a second rest state involving the fourth switch.