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:
Dec. 23, 2025
Filed:
Jan. 22, 2024
Synopsys, Inc., Sunnyvale, CA (US);
Ketul Bhogilal Sutaria, Austin, TX (US);
Synopsys, Inc., Sunnyvale, CA (US);
Abstract
A droop detector includes a phase generator generating a pulse responsive to a clock signal; an edge detector generating a first signal in response to the pulse; and a time-to-digital converter that includes N time-to-digital converter units. The time-to-digital converter generates an N-bit value representative of the timing difference between the edge of the pulse and the first signal. A capacitance associated with a subset of the time-to-digital converter units is adjusted during a calibration time to cause the difference between the arrival times of the data and clock at the jtime-to-digital converter unit to be greater than the difference between arrival times of the data and clock at the (j+1)time-to-digital convert unit. The data terminal of the flip-flop of each time-to-digital converter unit is responsive to the first pulse, and the clock terminal of the flip-flop of each time-to-digital converter unit is responsive to the first signal.