US 12,237,771 B2
Three-level buck converter configurable for two-level buck converter mode operation
Sanghwa Jung, Los Gatos, CA (US); Chunping Song, Palo Alto, CA (US); Ta-Tung Yen, San Jose, CA (US); and Yue Jing, Santa Clara, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Oct. 18, 2023, as Appl. No. 18/489,639.
Application 18/489,639 is a continuation of application No. 17/363,948, filed on Jun. 30, 2021, granted, now 11,831,241.
Prior Publication US 2024/0055992 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 3/158 (2006.01); H02M 3/07 (2006.01)
CPC H02M 3/1582 (2013.01) [H02M 3/07 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power supply circuit comprising:
a three-level buck converter circuit comprising a plurality of switches; and
a control circuit coupled to the three-level buck converter circuit and configured to control operation of the plurality of switches to operate between a three-level buck converter mode and a two-level buck converter mode, wherein the control circuit is configured to control the operation of the plurality of switches to exit the two-level buck converter mode based on an output current of the three-level buck converter circuit being higher than a threshold.