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:
May. 30, 1989
Filed:
Dec. 15, 1987
Applicant:
Inventor:
Robert C White, La Mesa, CA (US);
Assignee:
Sundstrand Corp., Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
323222 ; 363 25 ; 363 26 ;
Abstract
An improved DC to DC conveter is disclosed which is highly stable and has a highly regulated ouptut voltage. A pulse width modulator drives a switch for interrupting the flow of current through an inductor. A combination of feed forward and feedback control of the pulse width modulator is provided with the majority of control being provided by the feed forward component. The pulse width of the pulses from the width modulator is directly proportional to the feed forward and feedback components of the pulse duration control signal. Preferably, approximately 75%-90% of the pulse duration control signal is provided by the feed forward component.