US 12,068,696 B2
Methods and systems related to operation of a switching power converter
Ajay Karthik Hari, Scottsdale, AZ (US); and Alan David Finkel, Chandler, AZ (US)
Assigned to SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Scottsdale, AZ (US)
Filed by SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US)
Filed on Sep. 16, 2021, as Appl. No. 17/447,913.
Claims priority of provisional application 62/706,969, filed on Sep. 22, 2020.
Prior Publication US 2022/0094275 A1, Mar. 24, 2022
Int. Cl. H02M 3/335 (2006.01); H02M 1/08 (2006.01)
CPC H02M 3/33592 (2013.01) [H02M 1/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a switching power converter, the method comprising:
sensing, by a controller of a switching power converter, an input voltage supplied to the switching power converter; and
driving, by the controller within a plurality of switching cycles, a control input of a primary electrically-controlled switch, the driving in each switching cycle at a drive strength based on the input voltage,
wherein driving the control input at the drive strength further comprises:
driving at a first drive strength when the input voltage is above a predetermined threshold; and
driving at a second drive strength, higher than the first drive strength, when the input voltage is below the predetermined threshold.