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. 11, 2008
Filed:
Sep. 01, 2004
Piotr Markowski, Worcester, MA (US);
Piotr Markowski, Worcester, MA (US);
Artesyn Technologies, Inc., Carlsbad, CA (US);
Abstract
The present invention is directed to a digital controller for adjusting the duty ratio a pulse width modulation control signal used to control a power switch of a switch mode power converter. According to various embodiments, the digital controller comprises a voltage compensator module for generating a first signal (Dvoltage) representative of the duty ratio of the control signal based on a difference between an output voltage of the converter and a reference voltage. The controller also includes a current compensator module for generating a second signal (Dcorrection) representative of a modification to the duty ratio of the control signal based on an output current of the converter. A subtraction module subtracts the second signal (Dcorrection) from the first signal (Dvoltage) to thereby generate a third signal (D), which is used by a duty ratio PWM generator module to generate the pulse width modulation control signal with the appropriate duty ratio.