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:
Mar. 18, 2003
Filed:
Jun. 06, 2001
Erich-Johann Bayer, Thonhausen, DE;
Hans Schmeller, Falkenberg, DE;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The invention relates to a DC/DC converter circuit including a voltage conversion circuit and a regulator circuit comprising a reference voltage generator circuit and a comparator which outputs a control signal for activating/deactivating the voltage conversion circuit as a function of the output load of the converter circuit. The converter circuit additionally comprises a circuit for signaling the regulator circuit ON/OFF comprising a comparator, at the first input of which a further voltage characterizing the output voltage and, at the second input of which a voltage at a capacitor is applied, and a control circuit comprising switches which during the ON time of the regulator circuit control the capacitor so that it is charged to a voltage which differs by a predetermined amount from the voltage characterizing the output voltage, and when it has attained the design value it signaling the regulator circuit OFF and separating the capacitor from the charging voltage, the comparator outputting a signal to the control circuit when the further voltage characterizing the output voltage and the voltage across the capacitor agree, resulting in the regulator circuit being returned ON.