US 12,235,699 B2
Energy efficient Vmin architecture for shared power rails
Vijayakumar Ashok Dibbad, Bangalore (IN); Nikhil Ashok Bhelave, Gondiya (IN); Jeffrey Gemar, San Diego, CA (US); and Matthew Severson, Austin, TX (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Feb. 8, 2023, as Appl. No. 18/166,381.
Prior Publication US 2024/0264651 A1, Aug. 8, 2024
Int. Cl. G06F 1/30 (2006.01)
CPC G06F 1/305 (2013.01) 27 Claims
OG exemplary drawing
 
1. A method for managing a power distribution network (PDN), comprising:
determining by a processor a first peak current value based on a first requested performance corner received from a first client powered by a shared power rail within the PDN;
determining by the processor a second peak current value based on a second requested performance corner received from a second client powered by the shared power rail;
determining by the processor a system voltage droop margin based on the first peak current value, the second peak current value, and an impedance value of the PDN;
adjusting a voltage of the shared power rail based on the system voltage droop margin;
determining by the processor a first impedance value associated with the first requested performance corner, wherein the first impedance value is associated with a first operating frequency of the first requested performance corner; and
determining by the processor a second impedance value associated with the second requested performance corner, wherein the second impedance value is associated with a second operating frequency of the second requested performance corner.