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:
Apr. 30, 2019
Filed:
Oct. 30, 2017
Apple Inc., Cupertino, CA (US);
Weijun Yao, San Jose, CA (US);
David A. Stronks, San Jose, CA (US);
Hopil Bae, Sunnyvale, CA (US);
Kingsuk Brahma, San Francisco, CA (US);
Wei Hsin Yao, Palo Alto, CA (US);
Yafei Bi, Los Altos Hills, CA (US);
Yingxuan Li, Saratoga, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A charge pump that can be configured to operate in a first mode and a second mode is disclosed. The charge pump can comprise a charging capacitor coupled to a first node and configured to transfer a first DC voltage to the first node. The charge pump can also comprise a first output node and a second output node coupled to the first node. During the first mode, the first output node can be configured to output a second DC voltage based on the first DC voltage, and the second output node can be configured to output a third DC voltage based on the first DC voltage. During the second mode, the first output node can be configured to output the second DC voltage, and the second output node can be configured to output an AC voltage, the AC voltage being offset by the third DC voltage.