Logic optimizing power switch enable delay
AssigneeQUALCOMM Incorporated
InventorsJihoon Jeong, Vinay Patel, Jae Gon Lee, Akshay Dua, Ayush Singh, Xiang Hu, Sai Akshit Kumar Gampa, Vishal Srinivasan Iyer, Nitin Makhija
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Abstract
Certain aspects of the present disclosure are directed towards techniques for power management. The techniques provide an optimal staggering delay time between transmission of enable signals to power switches coupled (e.g., electrically coupled) to logic circuits and a power source. The optimal staggering delay time may allow enabling or turning on of the power switches in a staggered, sequential fashion while reducing power up latency of the logic circuits.
Claims18
An apparatus for power management, comprising:
- one or more logic circuits;
- and
- a power gating circuit associated with the one or more logic circuits and a power source, wherein the power gating circuit comprises a plurality of power switches and is configured to:
- receive a plurality of enable signals from a set of enable signals at different times for enabling the plurality of power switches, wherein one or more values of a time delay period between any two enable signals of the plurality of enable signals are configurable;
- enable the plurality of power switches at the different times based on the plurality of enable signals;
- and
- receive a plurality of acknowledgment signals, in response to the plurality of enable signals enabling the plurality of power switches.
A method for a power gating circuit, comprising:
- receiving a plurality of enable signals from a set of enable signals at different times for enabling a plurality of power switches of the power gating circuit, wherein one or more values of a time delay period between any two enable signals of the plurality of enable signals are configurable, and wherein the power gating circuit is associated with one or more logic circuits and a power source;
- enabling the plurality of power switches at the different times based on the plurality of enable signals;
- and
- receiving a plurality of acknowledgment signals, in response to the plurality of enable signals enabling the plurality of power switches.
Dependencies are inferred from the claim text.