US 12,217,891 B2
Vertical magnetic structure for integrated power conversion
Cian O'Mathuna, Cork (IE); Daniel Smallwood, Cork (IE); Zoran Pavlovic, Cork (IE); Hugh Smiddy, Cork (IE); Seamus O'Driscoll, Cork (IE); and Paul McCloskey, Cork (IE)
Assigned to UNIVERSITY COLLEGE CORK—NATIONAL UNIVERSITY OF IRELAND, Cork (IE)
Appl. No. 17/285,751
Filed by UNIVERSITY COLLEGE CORK—NATIONAL UNIVERSITY OF IRELAND, Cork (IE)
PCT Filed Oct. 15, 2019, PCT No. PCT/EP2019/077978
§ 371(c)(1), (2) Date Apr. 15, 2021,
PCT Pub. No. WO2020/079002, PCT Pub. Date Apr. 23, 2020.
Claims priority of provisional application 62/745,901, filed on Oct. 15, 2018.
Claims priority of application No. 1816833.6 (GB), filed on Oct. 16, 2018.
Prior Publication US 2022/0005640 A1, Jan. 6, 2022
Int. Cl. H01F 27/28 (2006.01); H01F 17/00 (2006.01); H01F 41/04 (2006.01); H05K 1/16 (2006.01)
CPC H01F 17/0013 (2013.01) [H01F 27/2804 (2013.01); H01F 41/046 (2013.01); H05K 1/165 (2013.01); H01F 2017/0066 (2013.01); H01F 2027/2809 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A transformer or coupled inductor device comprising:
two interconnected vertical columns of conductive material extending from a substrate embedded in a supporting structure, the two interconnected columns comprising a first column and a second column spaced apart from the first column, each column comprising an inner column portion and an outer column portion concentric with the inner column portion,
the outer column portion and the inner column portion each having a first end and a second end, wherein the first end of the first inner column portion and the first outer column portion each comprise an input terminal or an output terminal and the first end of the second inner column portion and the second outer column portion each comprise an input terminal or an output terminal, and wherein the second end of the first inner column portion is conductively coupled to the second end of the second inner column portion by an inner interconnecting track of conductive material, and wherein the second end of the first outer column portion is conductively coupled to the second end of the second outer column portion by an outer interconnecting track of conductive material;
wherein the device further comprises a first magnetic layer surrounding each outer column portion and a second magnetic layer surrounding each inner column portion,
wherein the first and second magnetic layers comprise a plurality of vertical laminations comprising alternating magnetic and dielectric layers and the second magnetic layer is provided between each inner column portion and outer column portion.