US 12,260,979 B2
Thermal management of planar transformer windings and cores
Hebri Vijayendra Nayak, Rockford, IL (US); and Scott C. Wohlfarth, Edgerton, WI (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Apr. 1, 2021, as Appl. No. 17/220,093.
Claims priority of provisional application 63/003,493, filed on Apr. 1, 2020.
Prior Publication US 2021/0313107 A1, Oct. 7, 2021
Int. Cl. H01F 27/06 (2006.01); H01F 27/22 (2006.01); H01F 27/28 (2006.01); H05K 1/18 (2006.01)
CPC H01F 27/2804 (2013.01) [H01F 27/06 (2013.01); H01F 27/22 (2013.01); H05K 1/181 (2013.01); H01F 2027/065 (2013.01); H01F 2027/2819 (2013.01); H05K 2201/086 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A two-card assembly comprising:
a first printed wiring board;
a second printed wiring board;
a first stiffener secured to the first printed wiring board, the first stiffener interposed between the first printed wiring board and the second printed wiring board;
a second stiffener secured to the second printed wiring board, the second stiffener interposed between the first stiffener and second printed wiring board;
a transformer mounting plate interposed between the first stiffener and the second stiffener; and
a planar transformer secured to the transformer mounting plate, wherein the transformer mounting plate dissipates heat from the planar transformer;
wherein the transformer mounting plate further comprises a wedge lock mounting rail;
wherein the second stiffener further comprises a wedge lock mount rail, the wedge lock mounting rail of the transformer mounting plate aligns with the wedge lock mount rail of the second stiffener.