US 11,749,452 B2
Leakage transformer
Jakrapong Wongsasulux, Samutprakarn (TH); and Chaiwichit Suraprechakul, Samutprakarn (TH)
Assigned to DELTA ELECTRONICS (THAILAND) PUBLIC COMPANY LIMITED, Samutprakarn (TH)
Filed by Delta Electronics (Thailand) Public Company Limited, Samutprakarn (TH)
Filed on Mar. 10, 2020, as Appl. No. 16/814,245.
Prior Publication US 2021/0287847 A1, Sep. 16, 2021
Int. Cl. H01F 27/28 (2006.01); H01F 27/34 (2006.01); H01F 38/08 (2006.01)
CPC H01F 27/34 (2013.01) [H01F 27/28 (2013.01); H01F 38/08 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A leakage transformer configured for a resonant converter, comprising:
a first plate and a second plate;
a plurality of winding pillars disposed on the first plate;
a primary winding and a secondary winding wound around the plurality of winding pillars; and
a plurality of magnetic shunt elements disposed on the first plate,
wherein one of the plurality of winding pillars and one of the plurality of the magnetic shunt elements are line-aligned in a first direction, the other one of the plurality of winding pillars and the other one of the plurality of the magnetic shunt elements are line-aligned in a second direction, and the first direction is in parallel to the second direction,
wherein a gap is located between the magnetic shunt element and the second plate, and a leakage inductance of the leakage transformer is determined by the gaps,
wherein a plurality of magnetic shunt elements are arranged in a first line, and a plurality of winding pillars are arranged in a second line, and the first line is parallel to the second line,
wherein a gap between the winding pillar and the second plate is configured for disposing a magnetizing inductance.