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:
Sep. 15, 2009
Filed:
Nov. 08, 2006
Allan Ming-lun Lin, Pleasanton, CA (US);
Mark Dean Eason, Hollister, CA (US);
Mark Robert Muegge, Cupertino, CA (US);
Allan Ming-Lun Lin, Pleasanton, CA (US);
Mark Dean Eason, Hollister, CA (US);
Mark Robert Muegge, Cupertino, CA (US);
iWatt Inc., Los Gatos, CA (US);
Abstract
A power converter includes a switch controller having a dual output digital-to-analog converter for generating a variable reference voltage and a knee voltage offset from the reference voltage by a predetermined voltage. The variable reference voltage is generated based on a reconstructed representation of output voltage of the power converter in a previous switching cycle. Comparators compare the variable reference voltage and the variable knee voltage to a sensed output of the power converter in a first switching cycle. A digital logic of the switch controller receives signals from the comparators and determines a pulse signal for controlling an on-time and an off time of a switch in a second switching cycle.