US 12,294,309 B2
Tranformer based voltage regulator with flexible trans-inductor structure
Xingxuan Huang, San Jose, CA (US); Chuan Shi, San Jose, CA (US); Xinyu Liang, San Jose, CA (US); and Jonathan Paolucci, Santa Clara, CA (US)
Assigned to Analog Devices, Inc., Wilmington, MA (US)
Filed by Analog Devices, Inc., Wilmington, MA (US)
Filed on Sep. 9, 2022, as Appl. No. 17/930,996.
Prior Publication US 2024/0088795 A1, Mar. 14, 2024
Int. Cl. H02M 3/335 (2006.01); H02M 1/14 (2006.01)
CPC H02M 3/33576 (2013.01) [H02M 1/14 (2013.01); H02M 3/33573 (2021.05)] 18 Claims
OG exemplary drawing
 
1. A multi-phase regulator circuit, the regulator circuit comprising:
one or more switching converter circuits, each switching converter circuit including:
a transformer including a primary winding and a multi-segment secondary winding;
a primary side switching circuit configured to connect the primary winding to an input of the multi-phase regulator circuit;
multiple secondary side circuits including multiple coupled-inductor circuits, each coupled-inductor circuit including a first winding and a second winding magnetically coupled to the first winding;
wherein each respective segment of the multi-segment secondary winding of the transformer is connected to the first winding of a respective coupled-inductor circuit and the first winding the respective coupled-inductor circuit is connected to an output of the multi-phase regulator circuit; and
wherein second windings of the multiple coupled-inductor circuits are connected together in series to a circuit ground.