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:
May. 11, 2021
Filed:
Mar. 28, 2019
Integrated Device Technology, Inc., San Jose, CA (US);
Tao Qi, San Diego, CA (US);
Gustavo Mehas, Mercer Island, WA (US);
Chan Young Jeong, San Jose, CA (US);
Xinyun Gu, San Jose, CA (US);
Nicholaus Smith, La Mesa, CA (US);
Amit D. Bavisi, Los Gatos, CA (US);
Daryl Sugasawara, San Jose, CA (US);
Aihua Lee, Saratoga, CA (US);
Integrated Device Technology, Inc., San Jose, CA (US);
Abstract
Embodiments described herein provide a wireless power transmitter that dynamically adjusts the deadtime to reduce power loss. Specifically, the wireless power transmitter includes a transistor circuit for switching a first voltage at a first node and a second voltage at a second node, and a LC circuit coupled between the first node and the second node. The wireless power transmitter further includes a controller coupled to the transistor circuit. The controller is configured to determine whether either of the first voltage and the second voltage is negative during a deadtime of switching. The controller is configured to increment or decrement the deadtime by an adjustment amount depending on whether negative voltage is detected.