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.:
Date of Patent:
Jun. 25, 2002
Filed:
Apr. 06, 2001
Applicant:
Inventors:
Peter Hammond, Greensburg, PA (US);
Mukul Rastogi, Monroeville, PA (US);
Assignee:
Robicon Corporation, New Kensington, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/12 ; H02M 1/14 ; H02M 7/00 ;
U.S. Cl.
CPC ...
H02M 1/12 ; H02M 1/14 ; H02M 7/00 ;
Abstract
This invention is an improvement to a multi-level, multi-phase power supply. Typically, in such power supplies, each of the phases has one or more power cells providing a pulse width modulated output. In such a configuration, when the transition of the pulse width modulated outputs of corresponding power cells in different phases occurs simultaneously, a double step in voltage is observed on the output of the power cell. This invention is an improvement over the prior art wherein the transitions of the outputs of the power cells are controlled to avoid simultaneous transitions.