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:
Dec. 23, 2014
Filed:
May. 05, 2011
Steven P. Weir, Petaluma, CA (US);
Steven P. Weir, Petaluma, CA (US);
Xandex, Inc., Petaluma, CA (US);
Abstract
An output ripple voltage average amplitude of a switch mode DC-DC converter is dynamically maintained. The converter has a switch and an output filter. By varying a switching period (T) of the switch, Vis maintained at a substantially constant value over a first range of converter input voltages and a second range of switch duty cycles. Where the output filter includes an inductor having inductance (L) and a capacitor having capacitance (C) the average amplitude of Vis dynamically maintained by varying Twith respect to switch duty cycle (D) and input voltage (V) so as to approximately satisfy the following relationship: T=(V*8*L*C)/(V*(D−D)).