Power supply sequencing distributed among multiple devices with linked operation
US7337342B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 2005 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | May 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/266
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method is provided to accomplish distributed power sequencing function of a large electronics system with minimum number of signals in the sequencing network without compromising the flexibility and expandability. In one embodiment of the invention, the power sequencing function is accomplished with two signals of the sequencing network: power_on/power_off signal and SEQ_LINK signal. The power_on/power_off signal controls whether the sequencing is in power_on mode for turning on power to multiple devices in a predetermined sequence or power_off mode for for turning off power to multiple devices in a reverse sequence. The SEQ_LINK signal controls when the sequence counters, located in each participating device, are allowed to count to the subsequent state. Each sequencing logic circuit of these participating devices responds to a predetermined sequence position to enable the power on or power off of the power supply it controls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.