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:
Mar. 31, 2020
Filed:
Oct. 29, 2013
Apple Inc., Cupertino, CA (US);
Saining Ren, Freemans Bay, NZ;
Lawrence Bernardo Dela Cruz, Freemans Bay, NZ;
Daniel Robertson, Freemans Bay, NZ;
Apple Inc., Cupertino, CA (US);
Abstract
An inductive power transfer receiver is provided including a receiving coil () in series with a capacitor (), a voltage multiplier () for providing a DC output, and a power control switch () controlled by a controller () for regulating the power supplied to a load. An inductive power transfer receiver is provided including a receiving coil in series with a capacitor, a charge pump for providing a DC output, and a power control switch controlled by a controller for regulating the power supplied to a load. A method of power flow control in an inductive power transfer circuit having a power control switch is also provided. The method includes detecting two operational transitions in the circuit and determining a reference timing bases on which operational transition is detected earliest within a detection window. The reference timing is used to developing a signal for controlling the power control switch.