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. 07, 1999
Filed:
Aug. 05, 1998
Applicant:
Inventor:
Stefan Barkaro, Solna, SE;
Assignee:
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323282 ; 323351 ; 363101 ;
Abstract
A buck boost switching regulator includes a buck switch and a boost switch controlled by a first and second comparator, respectively. The first comparator generates a duty cycle control signal for the buck switch in response to the difference between the regulator output voltage and a control voltage corresponding to a desired regulator output voltage. The second comparator generates a duty cycle control signal for the boost switch in response to a supply voltage.