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:
Jan. 11, 2000
Filed:
Oct. 27, 1998
James K Koch, Rocklin, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
The present invention provides a voltage transformer circuit which combines half-bridge topology with a current-mode control according to the present invention. The DC--DC converter circuit according to the present invention includes: a power transformer, where the primary side of the transformer includes a power winding and a balance winding and a means for injecting a correction current proportional to the amount of current flowing in the balance winding, where the means for injecting a correction current proportionate to the amount of current flowing in the balance winding including a means for sensing the amount of current in the balance winding. The correction current is injected in such a way so that current from the means for injecting a correction current is subtracted from the switch current lengthening the on-time of the switches in the half-bridge circuit thereby driving the bridge center tap back towards V.sub.in /2, preventing an unstable or runaway operating condition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile