US 12,334,806 B2
Hybrid power conversion system and control method
Rui Liu, Fremont, CA (US); Thomas Liu, Freemont, CA (US); and Songnan Yang, Frisco, TX (US)
Assigned to Halo Microelectronics International, Campbell, CA (US)
Filed by Halo Microelectronics International, Campbell, CA (US)
Filed on Nov. 13, 2023, as Appl. No. 18/389,216.
Application 18/389,216 is a continuation in part of application No. 17/663,696, filed on May 17, 2022, granted, now 11,817,770.
Application 17/663,696 is a continuation in part of application No. 17/326,503, filed on May 21, 2021, granted, now 11,451,151, issued on Sep. 20, 2022.
Prior Publication US 2024/0079949 A1, Mar. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 1/00 (2007.01); H02M 3/07 (2006.01); H02M 3/158 (2006.01)
CPC H02M 1/0095 (2021.05) [H02M 3/07 (2013.01); H02M 3/1584 (2013.01); H02M 1/0054 (2021.05); H02M 3/072 (2021.05)] 23 Claims
OG exemplary drawing
 
1. A hybrid multi-phase step-down power converter comprising:
L phase legs, each phase leg of the L phase legs comprising a plurality of switches connected in series between an input power source and ground, wherein:
a first flying capacitor of an Mth phase is cross-coupled between an Mth phase leg and an (M+1)th phase leg; and
a first flying capacitor of an Lth phase is cross-coupled between an Lth phase leg and a first phase leg, and wherein switches of the L phase legs are configured such that a ratio of an input voltage of the hybrid multi-phase step-down power converter to an output voltage of the hybrid multi-phase step-down power converter is equal to N/D, and wherein L, M, N are positive integers with M<L and L>2, and D is a duty cycle of the hybrid multi-phase step-down power converter.