US 12,267,946 B2
Power delivery network noise isolation in a computing device
Jason Gonzalez, Solana Beach, CA (US); and Lili Xu, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM INCORPORATED, San Diego, CA (US)
Filed on Feb. 16, 2022, as Appl. No. 17/673,347.
Prior Publication US 2023/0262874 A1, Aug. 17, 2023
Int. Cl. H05K 1/02 (2006.01); G06F 1/28 (2006.01); H05K 1/11 (2006.01); H05K 1/18 (2006.01)
CPC H05K 1/0216 (2013.01) [G06F 1/28 (2013.01); H05K 1/112 (2013.01); H05K 1/181 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A system for power delivery network isolation, comprising:
a printed circuit board comprising a plurality of planar layers, a power distribution layer of the plurality of layers comprising a root conductive region and a plurality of branch conductive regions fanning out from the root conductive region, each branch conductive region insulated from other branch conductive regions by a non-conductive region, each branch conductive region having at least one of a plurality of power delivery connections, wherein a shortest conductive path from a first power receiving connection to a second power receiving connection through the root conductive region is longer than the shortest direct path from the first power receiving connection to the second power receiving connection across at least one of the non-conductive regions;
the power distribution layer consists of a layer of metal formed on a non-conductive layer, and each non-conductive region comprises a channel devoid of the metal;
each channel comprises a first rectilinear section closest to the root conductive region and which is parallel to neighboring first rectilinear sections of other neighboring channels; each channel further comprises a second rectilinear section extending at an obtuse angle relative to a respective first rectilinear section; each branch conductive region comprising a planar region having at least one edge defined by one of the second rectilinear sections of one channel.