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:
Oct. 30, 2007
Filed:
Jan. 21, 2005
Michael E. Stanley, Mesa, AZ (US);
Michael E. Stanley, Mesa, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A pulse width modulator () and method that facilitates high resolution pulse width modulation is provided. The pulse width modulator () creates a pulse width modulated signal having a duty cycle that is proportional to a controllable delay in the modulator. The pulse width modulator combines a first digitally controllable delay () with a delay adjustment () to provide the controllable delay. In one embodiment, a digital counter () is used to provide coarse delay, with the delay adjustment device () coupled to the digital counter () to provide the fine, high resolution, delay control. Together the digital counter () and delay adjustment device () provide high resolution pulse width modulation. In one particular implementation, the analog delay adjustment device () comprises a delay block () designed to provide delay adjustment that is selectively controllable by changing a capacitance in the device.