US 12,273,046 B2
Hybrid voltage regulator architecture
Shiguo Luo, Austin, TX (US); Guangyong Zhu, Austin, TX (US); Lei Wang, Austin, TX (US); and Feng-Yu Wu, Taipei (TW)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Dec. 7, 2022, as Appl. No. 18/076,996.
Prior Publication US 2024/0195322 A1, Jun. 13, 2024
Int. Cl. H02M 1/00 (2007.01); G06F 1/26 (2006.01); H02M 3/158 (2006.01); H02M 7/537 (2006.01)
CPC H02M 7/537 (2013.01) [G06F 1/26 (2013.01); H02M 1/0043 (2021.05); H02M 3/1586 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A voltage regulator, comprising:
a first portion including a first converter phase configured to receive an input voltage and to provide an output voltage on a power rail through a first inductor, wherein a first terminal of the first inductor is coupled to an output of the first converter phase, and a second terminal of the first inductor is coupled to the power rail;
a second portion including:
a second converter phase configured to receive the input voltage and to provide the output voltage on the power rail through a first primary winding of a first coupled inductor, the first coupled inductor including the first primary winding and a first secondary winding magnetically coupled to the first primary winding, wherein a first terminal of the first primary winding is coupled to an output of the second voltage converter, and a second terminal of the first primary winding is coupled to the power rail;
a third converter phase configured to receive the input voltage and to provide the output voltage on the power rail through a second primary winding of a second coupled inductor, the second coupled inductor including the second primary winding and a second secondary winding magnetically coupled to the second primary winding, wherein a first terminal of the second primary winding is coupled to an output of the third voltage converter, and a second terminal of the second primary winding is coupled to the power rail; and
a compensation inductor, wherein a first terminal of the compensation inductor is coupled to a ground plane, a second terminal of the compensation inductor is coupled to a first terminal of the first secondary winding, a second terminal of the first secondary winding is coupled to a first terminal of the second secondary winding, and a second terminal of the second secondary winding is coupled to the ground plane;
wherein the first inductor is not magnetically coupled with either the first coupled inductor or the second coupled inductor.