US 12,451,812 B2
Isolated full-bridge converter
Philipp Rehlaender, Paderborn (DE); Frank Schafmeister, Warburg (DE); Joachim Böcker, Berlin (DE); and Linna Lv, JiangSu Province (CN)
Assigned to Delta Electronics (Thailand) Public Co., Ltd., Samutprakarn (TH)
Filed by Delta Electronics (Thailand) Public Co., Ltd., Samutprakarn (TH)
Filed on May 5, 2023, as Appl. No. 18/312,601.
Claims priority of application No. 22171911 (EP), filed on May 5, 2022.
Prior Publication US 2023/0412086 A1, Dec. 21, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 7/5387 (2007.01)
CPC H02M 3/33573 (2021.05) [H02M 1/0058 (2021.05); H02M 7/53871 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An isolated full-bridge converter, configured to selectively operate in one of at least two different operation modes, and comprising:
a primary side, comprising an inverter that comprises a full bridge which comprises a first leg and a second leg, the first leg comprising a first transistor and a third transistor, the second leg comprising a second transistor and a fourth transistor, wherein the first transistor and the second transistor are connected to a first input port of the isolated full-bridge converter and the third transistor and the fourth transistor are connected to a second input port of the isolated full-bridge converter,
a secondary side, comprising a rectifier, and
a transformer, comprising a primary winding that is coupled to the primary side and a secondary winding that is coupled to the secondary side;
wherein the at least two different operation modes comprise a number of subsequent switching cycles, each of the switching cycles is of a duration of 2T and comprises a first interval, a second interval, a third interval and a fourth interval, which are subsequent intervals in a given order, and the time duration of each of the intervals is equal to a duration of T/2, and wherein the first transistor, the second transistor, the third transistor and the forth transistor are switched on and off in different orders and by different times and have different duty cycles in the at least two different operation modes respectively.