Supply voltage tracking clock generator in adaptive clock distribution systems
US9628089B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Jun 24, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00058
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An adaptive clock distribution (ACD) system with a voltage tracking clock generator (VTCG) is disclosed. The ACD system includes a tunable-length delay (TLD) circuit, to generate a TLD clock by adding a preselected delay to a root clock, and a voltage droop detector for detecting a voltage droop in a supply voltage. The VTCG is configured to generate a VTCG clock, wherein a frequency of the VTCG clock is finely tuned to one of two or more values to correspond to a magnitude of the supply voltage during the voltage droop. A clock selector selects the VTCG clock as an ACD clock to be provided to an electronic circuit during the voltage droop and the TLD clock as the ACD clock when there is no voltage droop detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.