公开(公告)号：US20240113624A1

公开(公告)日：2024-04-04

申请号：US17957789

申请日：2022-09-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Eric SOUTHARD ,  Daniel A. MAVENCAMP ,  Qiong LI ,  Shishuo ZHAO

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M3/1582 ,  H02M1/0009 ,  H02M1/08 ,  H02J2207/20

Abstract: A multi-phase buck-boost converter includes a first half-bridge circuit, a second half-bridge circuit, a third half-bridge circuit, and a control circuit. The first half-bridge circuit is coupled to a first inductor terminal. The second half-bridge circuit is coupled to a second inductor terminal. The third half-bridge circuit is coupled to a third inductor terminal, a system voltage terminal, and a battery terminal. The control circuit is coupled to the first half-bridge circuit, the second half-bridge circuit, and the third half-bridge circuit. The control circuit is configured to transition the first half-bridge circuit, the second half-bridge circuit, and the third half-bridge circuit from operation in a buck mode to operation in a buck-boost mode based on an off-time of the first half-bridge being less than a particular time.