Multiphase clamp coupled-buck converter and magnetic integration

Publication Date
2004-08-31Filing Date
2002-02-22Inventor
Lee, Fred C.
Wei, Jia
Xu, Peng
Yao, Kaiwei
Ye, Mao
Metadata
Show full item recordAbstract
Voltage regulation, transient response and efficiency of a voltage regulator module (VRM) is improved where short duty cycles are necessitated by large differentials of input and output voltage by including at least one clamping of a tap of an inductance in series with an output of each of a plurality of parallel branches or phases which are switched in a complementary fashion or providing coupling between inductors of respective phases. Such coupling between inductors is achieved in a small module with an integrated magnetic structure. Reduced component counts are achieved while deriving built-in input and output filters. Principals of the invention can be extended to isolation applications and push-pull forward converts, in particular. A lossless clamping circuit is also provided allowing spike currents to be suppressed while returning power to the output of the VRM.
Assignee
Virginia Tech Intellectual Properties, Inc.
Patent Number
6784644
Application Number
10079819
Primary/U.S. Class
323/225
Other/U.S. Class
323/255
323/259
363/56.12
CPC Class
H02M3/158
H02M3/1584
H02M2001/0064
Patent Type
utility
Collections
- Virginia Tech Patents [687]