The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2020
Filed:
Dec. 21, 2016
Apple Inc., Cupertino, CA (US);
InHwan Oh, Cupertino, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
A power converter includes a current-monitoring on-state controller that is configured to adjust the timing of a switch-mode voltage conversion stage of the power converter. For example, the timing of the turn-on of a MOSFET associated with a buck converter operated in a discontinuous conduction mode (e.g., quasi-resonant) can be adjusted based on a zero crossing of current through a tank inductor also associated with the buck converter. More particularly, the MOSFET may be turned on after a predetermined delay is initiated after current through the tank inductor reaches zero. The predetermined delay is based on a resonance period defined by the characteristic capacitance of the MOSFET and the inductance of the tank inductor.