Power sequencing

Details Power sequencing Power sequencing

2005-09-30

2008-12-23

Elamin, Abdelmoniem (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power sequencing

C713S300000, C713S340000, C327S143000, C327S535000

Reexamination Certificate

active

07469353

ABSTRACT:
Methods and arrangements to establish power rails for a computer system in accordance with a sequence requirement are disclosed. Embodiments may interconnect voltage regulators for components of a platform in accordance with a sequence requirement for establishing power rails for proper operation of the platform. The voltage regulators may comprise enable inputs for enabling the establishment of power rails and power good signal outputs to indicate establishment of power rails. Some embodiments include interconnections to couple voltage regulators in a series of stages. Power good signals output by voltage regulators in one stage may enable inputs of voltage regulators in a subsequent stage. In many embodiments, such interconnections advantageously implement power sequence requirements with little or no need for glue logic and/or programmable logic devices, reducing costs and space requirements associated with implementing the power sequence. Other embodiments are disclosed and claimed.

REFERENCES:
patent: 5973485 (1999-10-01), Kates et al.
patent: 6333650 (2001-12-01), Amin et al.
patent: 6792553 (2004-09-01), Mar et al.
patent: 6879139 (2005-04-01), Brown et al.
patent: 7253625 (2007-08-01), Trabbic et al.

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