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:
Aug. 30, 2022
Filed:
Aug. 03, 2021
Crane Electronics, Inc., Lynnwood, WA (US);
Cuon Lam, Renton, WA (US);
Ryan Ricchiuti, Edmonds, WA (US);
Joseph Alexander, Bothell, WA (US);
Sovann Song, Kent, WA (US);
Mikel Thomas, Kirkland, WA (US);
Crane Electronics, Inc., Redmond, WA (US);
Abstract
A pulse-width modulation circuit includes an oscillator stage. The oscillator stage includes a first voltage comparator having a first input terminal, a second input terminal and an output terminal. A first capacitor is coupled to the first input terminal of the first voltage comparator. A charging path for the first capacitor is coupled between the first capacitor and the output terminal of the first voltage comparator, the charging path having a first resistance. A discharging path for the first capacitor is coupled between the first capacitor and the output terminal of the first voltage comparator, the discharging path having a second resistance that is different from the first resistance. A duty cycle of a clock signal generated by the oscillator stage is determined based on a first RC time constant for charging the first capacitor and a second RC time constant for discharging the first capacitor.