US 11,948,716 B1
Power modules with elevated inductors and capacitors arranged under the inductors
Houle Gan, Santa Clara, CA (US); Shuai Jiang, Saratoga, CA (US); Gregory Sizikov, Sunnyvale, CA (US); Xin Li, San Jose, CA (US); and Chee Yee Chung, Milpitas, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Feb. 25, 2020, as Appl. No. 16/800,776.
Int. Cl. H01F 17/00 (2006.01); H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01); H05K 5/00 (2006.01)
CPC H01F 17/0006 (2013.01) [H05K 5/0069 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A power module comprising:
a first circuit board comprising a first surface and a second surface opposite the first surface;
one or more inductors mounted on the first surface of the first circuit board, wherein:
each of the one or more inductors comprises a top surface and a bottom surface opposite the top surface and that faces the first surface of the first circuit board; and
each of the one or more inductors is elevated above the first surface of the first circuit board such that at least a portion of the bottom surface of the inductor does not contact the first surface of the first circuit board; and
for each of the one or more inductors, the first circuit board comprises a plurality of capacitors arranged in an area below the portion of the bottom surface of the inductor that does not contact the first surface of the first circuit board, the plurality of capacitors arranged along the first surface of the first circuit board and positioned between the bottom surface of the one or more inductors and the first circuit board,
wherein at least one inductor of the one or more inductors comprises a dual-fed bridge inductor comprising a plurality of inductor core posts that electrically connect the inductor to conductors of the first circuit board and support the dual-fed bridge inductor on the first surface of the first circuit board, and
wherein each post of the plurality of inductor core posts corresponds to a different phase of the dual-fed bridge inductor.