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:
Nov. 03, 2009
Filed:
Sep. 20, 2007
A. Paul Brokaw, Tucson, AZ (US);
Marc J. Kobayashi, Oro Valley, AZ (US);
A. Paul Brokaw, Tucson, AZ (US);
Marc J. Kobayashi, Oro Valley, AZ (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A linearized controller to operate a switching power converter which includes an inductor having its first terminal coupled to a first voltage (V) and its second terminal switched so that it alternately connects to a second, higher voltage (V) or to a common terminal. A sawtooth voltage generator produces a ramp voltage (V) having a period T and an amplitude which varies in response to a control voltage Vx, and a voltage comparator which compares Vto a control voltage Vy. The comparator output controls the switching such that T is divided into intervals tand t, during which the second terminal is connected to the common terminal or to V, respectively. When Vy is maintained in a fixed proportion to V, Vis driven to be in the same proportion to Vx, independently of changes in V, providing a boost converter. A buck converter is similarly realized.