Multiphase voltage regulator having coupled inductors with reduced winding resistance

Publication Date
2007-04-03Filing Date
2005-10-25Inventor
Lee, Fred C.
Xu, Ming Gang
Zhou, Jinghai
Dong, Yan
Metadata
Show full item recordAbstract
A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. A magnetic core with a unique woven topology provides inverse coupling between the inductors. The inductors can comprise straight conductors since the magnetic core has the woven topology wrapped around each inductor. The inductors have a reduced electrical resistance since they are straight and do not loop around the magnetic core. The reduced electrical resistance increases energy efficiency and improves transient response of the circuit. The magnetic core can comprise top and bottom portions that are magnetically connected. The inductors can comprise straight circuit board traces and the circuit board can have holes to accommodate the magnetic core.
Assignee
Virginia Tech Intellectual Properties, Inc.
Patent Number
7199695
Application Number
11257404
Primary/U.S. Class
336/212
Other/U.S. Class
CPC Class
H01F37/00
H01F29/02
H02M3/1584
Patent Type
utility
Collections
- Virginia Tech Patents [620]