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:
Nov. 01, 2016
Filed:
Oct. 09, 2013
Active-semi, Inc., Road Town, Tortola, VG;
James A. Kohout, Dallas, TX (US);
Active-Semi, Inc., , VG;
Abstract
Apparatus and methods are provided to power an N-type load switch using a bootstrap capacitor. In one embodiment, an integrated circuit for a wireless power receiver comprises a first rectifier input terminal (RX), a second rectifier input terminal (RX), a first bootstrap terminal (HSB), a second bootstrap terminal (HSB), and a load switch terminal (LSW). A first and a second bootstrap circuit are coupled with HSBand HSBto power the rectifier in a regular mode. A load switch driver circuit is coupled between LSW and either HSBor HSB. In the regular mode the load switch driver circuit powers a load switch through a corresponding bootstrap circuit. In an output shutdown mode, an output shutdown circuit is turned on to turn off the load switch. In one embodiment, the load switch is external to the integrated circuit. In another embodiment, the load switch is internal to the integrated circuit.