US 12,323,048 B2
Common-mode noise cancellation circuit and switching power converter for common-mode noise cancellation
Tsung-Liang Hung, Taoyuan (TW)
Assigned to ASIAN POWER DEVICES INC., Taoyuan (TW)
Filed by ASIAN POWER DEVICES INC., Taoyuan (TW)
Filed on Jul. 20, 2023, as Appl. No. 18/224,240.
Claims priority of application No. 112118917 (TW), filed on May 22, 2023.
Prior Publication US 2024/0396429 A1, Nov. 28, 2024
Int. Cl. H02M 1/12 (2006.01); H02M 1/00 (2006.01); H02M 1/44 (2007.01); H02M 3/335 (2006.01)
CPC H02M 1/123 (2021.05) [H02M 1/0064 (2021.05); H02M 3/33576 (2013.01); H02M 1/44 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A common-mode noise cancellation circuit, comprising:
a capacitor, and
an inductor, comprising three coupled windings involving a first coupled winding, a second coupled winding, and a third coupled winding,
wherein an input end of the first coupled winding and an input end of the second coupled winding are respectively coupled to two ends of an input power source; an input end of the third coupled winding is coupled to the output end of the second coupled winding, and an output end of the third coupled winding is coupled to the capacitor,
wherein an output end of the first coupled winding and an output end of the second coupled winding are respectively coupled to two input ends of a power conversion stage.