International Business Machines Corporation

Pierce I Chuang

Phillip John Restle

Christos Vezyrtzis

Keith Aelwyn Jenkins

Barry P Linder

Chen-Yong Cher

Divya Pathak

A voltage droop mitigation system, that includes a first processor core that executes computer executable components stored in a memory. A time-based sensor component generates digital data representing voltage values associated with a power supply. A filtering component digitally conditions the generated digital data, and an analysis component analyzes the conditioned data and determines slope of the power supply voltage and employs counters to determine rate of data change over time; and if the slope is negative and exceeds a first pre-determined value for a pre-determined time period. The system implements one or more voltage droop-reduction techniques at the first processor core; and the first processor core transmits at least one of the following types of information: its voltage value, slope information or decision to apply droop reduction to one or more other cores.

Mitigation of on-chip supply voltage noise by monitoring slope of supply voltage based on time-based sensors

Over at least part of a lifetime of a product circuit, quiescent current to a product circuit is periodically measured. Over the part of the lifetime of the product circuit, voltage to the product circuit is periodically adjusted based on the monitored quiescent current. Methods, apparatus, and computer program product are disclosed. A calibration procedure may also be performed as part of manufacturing the product circuit, in order to provide values for the quiescent current and corresponding voltage to which the voltage should be adjusted.

Autonomic supply voltage compensation for degradation of circuits over circuit lifetime

Mitigation of on-chip supply voltage based on local and non-local (neighboring) cores' supply voltage information and decision

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Pierce I Chuang