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:
Sep. 18, 2000
Filed:
Jun. 27, 1999
Jean-Michel Ravon, Fuveau, FR;
STMicroelectronics S.A., Gentilly, FR;
Abstract
A non-isolated voltage converter, of switch-mode type, includes a capacitor between terminals that provide an output voltage regulated by a circuit that controls a switch that provides current to an inductive element. A local supply for the control circuit receives energy from the inductive element. In one embodiment, the inductive element has a tab between two windings, and the output voltage of the converter is smaller than the local supply voltage of the control circuit. In another embodiment, a diode is interposed between a positive terminal of the output capacitor and a positive terminal of a capacitor of the local supply of the control circuit. The negative terminal of the local supply capacitor is connected to the mid-point of a series association of the switch with the inductive element. A zener diode is interposed, in series with the local supply capacitor and the local supply diode, between the mid-point and the positive output terminal.