US 11,818,815 B2
Switching converter, control circuit and control method thereof
Fusong Huang, Hangzhou (CN); and Kailang Hang, Hangzhou (CN)
Assigned to Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou (CN)
Filed by Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou (CN)
Filed on Sep. 14, 2021, as Appl. No. 17/474,625.
Application 17/474,625 is a continuation of application No. 16/564,091, filed on Sep. 9, 2019, granted, now 11,147,132.
Claims priority of application No. 201811101457.6 (CN), filed on Sep. 20, 2018.
Prior Publication US 2021/0410244 A1, Dec. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H05B 45/10 (2020.01); H05B 45/44 (2020.01); H05B 45/37 (2020.01)
CPC H05B 45/10 (2020.01) [H05B 45/37 (2020.01); H05B 45/44 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling a switching converter having a plurality of interleaved parallel branches, the method comprising:
a) shielding on-time control signals corresponding to each interleaved parallel branch to maintain a conduction state of at least one corresponding power switch that is turned on when a load changes from a light load to a heavy load; and
b) controlling conduction phases of power switches of the plurality of interleaved parallel branches to be overlapped when the shielded power switch has turned on for a predetermined time, in order to improve dynamic response performance of the switching converter.