The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7872886 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 18, 2011

Filed:

Feb. 20, 2008
Applicants:

Ming Xu, Blacksburg, VA (US);

Julu Sun, Blacksburg, VA (US);

Ya Liu, Blacksburg, VA (US);

Fred C. Lee, Blacksburg, VA (US);

Inventors:

Ming Xu, Blacksburg, VA (US);

Julu Sun, Blacksburg, VA (US);

Ya Liu, Blacksburg, VA (US);

Fred C. Lee, Blacksburg, VA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected in series wherein regulated and unregulated branches each provide a substantially fixed and constant proportion of the output current. The series connection of input power sources may provide a further feedback mechanism in addition to feedback for regulation which enhances overall performance. As a perfecting feature of the invention, inductor-less resonant converters which are switched in an interleaved fashion may be used in the unregulated branch while substantially cancelling the characteristic large output voltage ripple thereof.


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Xu, Ming. (2011). Quasi-parallel voltage regulator (U.S. Patent No. 7872886). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7872886

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