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:
Jan. 23, 2001
Filed:
Aug. 26, 1999
Stephen W. Hobrecht, Los Altos, CA (US);
Linear Technology Corporation, Milpitas, CA (US);
Abstract
Circuits and methods for controlling timing and slope compensation in switching regulators are provided. These circuits and methods include a timing control circuit that controls the timing of the switching of one or more switching regulator output stages so that the switching occurs at evenly spaced time intervals, and a slope compensation circuit that produces a slope compensation signal having a waveform that need not match the waveform of any oscillator signal, nor that need have the same period as the oscillator signal. Timing control is performed by dividing a master clock signal using a T flip-flop and a “rolling clock” (or “Johnson counter”) to produce 2N clock phase signals. Slope compensation is provided by generating a slope compensation signal using decoding logic, a digital-to-analog converter (DAC), and an integrator.