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:
Nov. 14, 2000
Filed:
Sep. 17, 1999
Dale James Skelton, Plano, TX (US);
Rais Karimovich Miftakhutdinov, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A DC to DC power converter (58) and method of controlling the DC to DC power converter (58). The converter (58) has a first switch (S.sub.1) coupled to a second switch (S.sub.2). The converter (58) is adapted to receive an input voltage V.sub.in, generate an output voltage V.sub.out, and operate at a switching frequency. A hysteretic mode control circuit (52) includes a first circuit generating a ramp signal at input (56) for controlling the converter (58). The first circuit includes a first capacitor (C.sub.1) with the ramp signal generated at an end of the first capacitor (C.sub.1). The hysteretic mode control circuit (52) is coupled to the first (S.sub.1) and second (S.sub.2) switches, where the switching frequency of the first and second switches is dependent upon the ramp signal (56) determined by the value of the components of the first circuit rather than on the voltage from the output filter of the DC to DC power converter. The invention is particularly useful for applications such as DSPs and mixed signal or analog circuits.