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:
Dec. 02, 2003
Filed:
Jan. 14, 2002
Applicant:
Inventors:
Jonathan Adams, Rancho Palos Verdes, CA (US);
Edgar Abdoulin, Woodland Hills, CA (US);
Assignee:
International Rectifier Corporation, El Segundo, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 4/102 ;
U.S. Cl.
CPC ...
H05B 4/102 ;
Abstract
A self-oscillating circuit for driving high-side and low-side switching devices, such as MOSFETs connected in a half-bridge configuration. The circuit alternately turns on the switching devices by providing alternating gate pulses varying in duration or width. The pulses are separated by dead time to prevent cross conduction. At start up, the pulses increase from a minimum duration of zero to a maximum duration, while dead time duration simultaneously decreases to its minimum duration, to provide soft start.