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. 23, 2017
Filed:
Mar. 30, 2015
Apple Inc., Cupertino, CA (US);
Brijesh Tripathi, Los Altos, CA (US);
Eric G. Smith, Palo Alto, CA (US);
Erik P. Machnicki, San Jose, CA (US);
Jung Wook Cho, Cupertino, CA (US);
Khaled M. Alashmouny, Santa Clara, CA (US);
Kiran B. Kattel, San Francisco, CA (US);
Vijay M. Bettada, Fremont, CA (US);
Bo Yang, Santa Clara, CA (US);
Wenlong Wei, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An under voltage detection circuit and method of operating an IC including the same is disclosed. In one embodiment, an IC includes an under voltage protection circuit having first and second comparators configured to compare a supply voltage to first and second voltage thresholds, respectively, with the second voltage threshold being greater than the first. A logic circuit is coupled to receive signals from the first and second comparators. During operation in a high performance state by a corresponding functional circuit, the logic circuit is configured to cause assertion of a throttling signal responsive to an indication that the supply voltage has fallen below the first threshold. A clock signal provided to the functional circuit may be throttled responsive to the indication. If the supply voltage subsequently rises to a level above the second threshold, the throttling signal may be de-asserted.