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:
Jul. 24, 2018
Filed:
Apr. 27, 2016
Amazon Technologies, Inc., Seattle, WA (US);
Thomas Gang Wang, San Jose, CA (US);
Jesse Liang, Sunnyvale, CA (US);
Hanh Thuy Phan, San Jose, CA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
This disclosure is directed to apparatuses, methods, and systems for detecting a capability of a power source connected to a device. For example, a device may include a standardized connector that may allow an unknown power source to provide power to the device. When a power source is connected with a device, a controller powers up and initiates power capability detection procedures. A ramping current sink begins drawing current from the power source at an initial value and increases that amount to a maximum current value. If a voltage on the device voltage bus falls below a voltage threshold during the ramping current sink operation, the current sink is disconnected and an indication is provided to the controller that the power source is underpowered. Further, a safety timer turns off the ramping current sink to prevent excessive heat generation.