US 11,817,781 B2
Power converter having power stage circuits and an auxiliary module
Wang Zhang, Hangzhou (CN); and Chen Zhao, Hangzhou (CN)
Assigned to Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou (CN)
Filed by Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou (CN)
Filed on Dec. 8, 2021, as Appl. No. 17/545,141.
Claims priority of application No. 202011565342.X (CN), filed on Dec. 25, 2020.
Prior Publication US 2022/0209664 A1, Jun. 30, 2022
Int. Cl. H02M 3/156 (2006.01); H02M 3/335 (2006.01)
CPC H02M 3/156 (2013.01) [H02M 3/33507 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power converter, having at least one first power stage circuit and a second power stage circuit, wherein each of the at least one first power stage circuit comprises:
a) at least one power switch, configured as a main power switch;
b) a first magnetic element;
c) a first energy storage element configured to be coupled to a first node of the first power stage circuit together with one adjacent power stage circuit, and to be charged or discharged through the adjacent power stage circuit;
d) an auxiliary module configured to ensure that a current flowing through the first magnetic element is not less than zero in a current discontinuous mode, wherein the auxiliary module is directly connected between a first terminal of the first energy storage element and a first terminal of the first magnetic element; and
e) wherein a first terminal of the second power stage circuit is coupled to an adjacent first power stage circuit.