Dynamically changing control of sequenced power gating

Details Dynamically changing control of sequenced power gating Dynamically changing control of sequenced power gating

2011-07-12

2011-07-12

Fureman, Jared J (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Plural switches

C307S041000, C307S081000, C307S137000, C307S138000, C713S300000, C713S330000

Reexamination Certificate

active

07977822

ABSTRACT:
Power control circuitry for controlling connection of a voltage source to a switched power rail powering an associated circuit is provided. A plurality of switch blocks are connected in parallel between the switched power rail and the voltage source, each switch block being controlled by an enable signal provided by a switch controller. The switch controller performs a turn-on sequence providing a series of enable signal patterns to the switch blocks. The switch controller applies a time varying generation operation to at least one sequence stage of a predetermined turn-on sequence to produce a corresponding enable signal pattern for that sequence stage. When the turn-on sequence is later repeated, the enable signal pattern produced for at least one of the sequence stages differs from the enable signal pattern previously produced for that sequence stage.

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