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:
Jun. 11, 2002
Filed:
Mar. 27, 2000
David M. Dwelley, Fremont, CA (US);
Trevor W. Barcelo, Mountain View, CA (US);
Linear Technology Corporation, Milpitas, CA (US);
Abstract
A linear pulse-width modulator system is provided. The pulse-width modulation system of the present invention provides a pulse-width modulated (PWM) signal from a control voltage. The PWM signal varies linearly with the control voltage over a full range of duty cycles. The pulse width modulation system of the present invention has as plurality of comparators, each having one input coupled to a control voltage and a second input coupled to a periodic waveform signal provide by a waveform generator. The periodic waveform signals are identical except that each waveform is time delayed with respect to the other waveform signals. The outputs the comparators are coupled to a multiplexer which selects the output of each comparator as the PWM signal for a time interval corresponding to when the output signal of the comparator has substantially constant propagation delays. The propagation delays in the a comparator's output signal are substantially constant when the periodic waveform signal input of the comparator is not near the its minimum or maximum voltage.