US 11,695,337 B2
Current control for a boost converter with dual anti-wound inductor
Jason W. Lawrence, Austin, TX (US); John L. Melanson, Austin, TX (US); and Eric J. King, Austin, TX (US)
Assigned to Cirrus Logic, Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Nov. 12, 2021, as Appl. No. 17/525,463.
Application 17/525,463 is a continuation in part of application No. 16/709,036, filed on Dec. 10, 2019, granted, now 11,476,759.
Claims priority of provisional application 62/783,547, filed on Dec. 21, 2018.
Prior Publication US 2022/0069702 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 3/155 (2006.01)
CPC H02M 3/155 (2013.01) 24 Claims
OG exemplary drawing
 
1. A system, comprising:
a power converter comprising at least one stage having a dual anti-wound inductor having a first winding and a second winding constructed such that its windings generate opposing magnetic fields in its magnetic core and constructed such that a coupling coefficient between the first winding and the second winding is less than approximately 0.95; and
a current control subsystem for controlling an electrical current through the dual anti-wound inductor, the current control subsystem configured to:
minimize a magnitude of a magnetizing electrical current of the dual anti-wound inductor to prevent core saturation of the dual anti-wound inductor; and
regulate an amount of output electrical current delivered by the power converter to the load in accordance with a reference input signal.