US 12,218,584 B2
Multiphase power converter with CLC resonant circuit
Alessandro Zafarana, Milan (IT)
Assigned to SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Scottsdale, AZ (US)
Filed by SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Scottsdale, AZ (US)
Filed on Mar. 7, 2023, as Appl. No. 18/179,903.
Application 18/179,903 is a continuation of application No. 17/455,341, filed on Nov. 17, 2021, granted, now 11,626,796.
Claims priority of provisional application 63/200,622, filed on Mar. 18, 2021.
Prior Publication US 2023/0223845 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 3/07 (2006.01)
CPC H02M 3/07 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method of operating a power converter, the method comprising:
charging, during a first on-time, a first output inductor by a first switching-tank circuit defining a first switch node coupled to a first lead of a resonant inductor;
creating, during the first on-time, a first current flow into the first switching-tank circuit through the resonant inductor; and then
charging, during a second on-time, a second output inductor by a second switching-tank circuit defining a second switch node coupled to a second lead of the resonant inductor, wherein the resonant inductor and capacitors of the power converter have a lower resonant frequency and a higher resonant frequency;
creating, during the second on-time, a second current flow into the second switching-tank circuit through the resonant inductor; and
repeating the charging of the first output inductor at a switching frequency, wherein the switching frequency is equal to or lower than the lower resonant frequency.