US 12,149,180 B2
DC-DC middle-point topology interleaving control
Rafael Jimenez Pino, Valls (ES); Pablo Gaona Rosanes, Valls (ES); Hector Sarnago Andia, Ólvega (ES); and Oscar Lucia Gil, Saragossa (ES)
Assigned to Lear Corporation, Southfield, MI (US)
Filed by LEAR CORPORATION, Southfield, MI (US)
Filed on Nov. 3, 2021, as Appl. No. 17/517,835.
Claims priority of provisional application 63/126,601, filed on Dec. 17, 2020.
Prior Publication US 2022/0200465 A1, Jun. 23, 2022
Int. Cl. H02M 3/335 (2006.01); B60L 53/20 (2019.01)
CPC H02M 3/33584 (2013.01) [B60L 53/20 (2019.02); H02M 3/33573 (2021.05); H02M 3/33576 (2013.01); H02M 3/33592 (2013.01); B60L 2210/10 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A DC-DC converter that converts an input DC voltage to an output DC voltage, the DC-DC converter comprising:
a primary side switching network that receives the input DC voltage and outputs a primary side AC voltage;
a first transformer component including a first plurality of primary windings and a first plurality of secondary windings, the first transformer component receiving a first portion of the primary side AC voltage and outputting a first secondary side AC voltage;
a second transformer component including a second plurality of primary windings and a second plurality of secondary windings, the second transformer component receiving a second portion of the primary side AC voltage and outputting a second secondary side AC voltage, wherein the first plurality of primary windings is connected in series with the second plurality of primary windings;
a third transformer component including a third plurality of primary windings and a third plurality of secondary windings;
a first secondary side switching network that receives the first secondary side AC voltage; and
a second secondary side switching network that receives the second secondary side AC voltage, wherein outputs from the first plurality of secondary windings and the second plurality of secondary windings are combined to form the output DC voltage, wherein when a ratio between the input DC voltage and the output DC voltage is below a predetermined threshold, counter-phases in two of the first plurality of secondary windings, the second plurality of secondary windings and the third plurality of secondary windings are fixed to result in a functional cancellation.