US 12,322,541 B2
Magnetic structures for low leakage inductance and very high efficiency
Ionel Jitaru, Tucson, AZ (US)
Assigned to Rompower Technology Holdings, LLC, Milford, DE (US)
Filed by Rompower Technology Holdings, LLC, Milford, DE (US)
Filed on Sep. 14, 2023, as Appl. No. 18/368,513.
Application 18/368,513 is a continuation of application No. 17/845,609, filed on Jun. 21, 2022, granted, now 11,763,984.
Application 17/845,609 is a continuation of application No. 17/189,096, filed on Mar. 1, 2021, granted, now 11,367,565, issued on Jun. 21, 2022.
Application 17/189,096 is a continuation in part of application No. 16/368,186, filed on Mar. 28, 2019, granted, now 10,937,590, issued on Mar. 2, 2021.
Application 16/368,186 is a continuation of application No. 14/660,901, filed on Mar. 17, 2015, abandoned.
Claims priority of provisional application 63/133,076, filed on Dec. 31, 2020.
Claims priority of provisional application 61/955,640, filed on Mar. 19, 2014.
Prior Publication US 2024/0006119 A1, Jan. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01F 27/28 (2006.01); H01F 27/245 (2006.01); H01F 30/06 (2006.01)
CPC H01F 30/06 (2013.01) [H01F 27/245 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A magnetic and electrical circuit element, comprising:
a group of identical magnetic-flux-conducting posts placed between two continuous magnetic flux conductive plates, each plate shaped to ensure a continuous flow of magnetic field successively through adjacent magnetic-flux-conductive posts;
a multi-layer structure formed with an electrically-conductive material, said multi-layer structure including multiple layers forming a stack of layers along a length of the posts, said multi-layer structure configured as primary and secondary windings of a transformer, and other auxiliary windings;
the primary winding is embedded in the multi-layer structure and wound around the magnetic-flux-onducting posts in such a way that a magnetic field induced in each of the magnetic-flux-conducting posts has a magnetic field polarity opposite to a polarity of the respective magnetic field of the magnetic-flux-conducting post adjacent the respective magnetic-flux-conducting post;
around each of the magnetic-flux-conducting posts, there is at least one secondary winding which is connected to a semiconductor device, and said semiconductor device is disposed on the multi-layer structure.