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:
Oct. 26, 1999
Filed:
Nov. 19, 1997
Samuel H Nork, Andover, MA (US);
Linear Technology Corporation, Milpitas, CA (US);
Abstract
A switching regulator circuit using a common switch network on a single IC for providing step-up and step-down DC--DC conversion is provided. The switching regulator uses switched capacitor techniques and hence avoids EMI, parasitic and stability concerns particular to inductors and transformers. The converter circuit includes control circuitry for sensing the voltage differential between the input and output to determine whether step-up or step-down mode is to be used. The control circuitry also senses the voltage differential between the input and output and enables the minimum number of switch sections needed to fully regulate the output, using the highest switch resistance possible to minimize inrush current from the input to the output.