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:
Jul. 12, 2011
Filed:
Jun. 13, 2008
Vahid Yousefzadeh, Boulder, CO (US);
Anthony Carosa, Breckenridge, CO (US);
Toru Takayama, Tokyo, JP;
Dragan Maksimovic, Boulder, CO (US);
Vahid Yousefzadeh, Boulder, CO (US);
Anthony Carosa, Breckenridge, CO (US);
Toru Takayama, Tokyo, JP;
Dragan Maksimovic, Boulder, CO (US);
The Regents of the University of Colorado, A Body Corporate, Denver, CO (US);
Abstract
A hybrid digital pulse width modulator (DPWM) with digital delay-locked loops (DLLs) is provided. In this implementation, the digital pulse-width-modulator is synthesizable and includes a digital delay-locked loop around a delay-line to achieve constant frequency clocked operation. In this implementation, the resolution of the modulator is consistent over a wide range of process or temperature variations. The DPWM may implement trailing-edge, leading-edge, triangular, or phase-shift modulation. In an implementation suitable for DC-DC converters with synchronous rectifiers, for example, the DPWM may include two or more outputs for programmable dead-times. In another implementation, a digital pulse-width-modulator with a digital phase-locked loop is also provided.