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:
Jul. 16, 1991
Filed:
Feb. 22, 1989
Applicant:
Inventors:
Mansour Izadinia, Santa Clara, CA (US);
Paul Ueunten, San Jose, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ; H01L / ;
U.S. Cl.
CPC ...
307571 ; 307574 ; 307270 ; 307257 ; 323315 ; 357 234 ;
Abstract
A H-bridge circuit is disclosed using DMOST switches having current sensing parallel connected elements. An op-amp control circuit is coupled to the power and sense sources to force the sense source to the same potential as the power source. The op-amp circuit drives FET output devices which produce an output current proportional to the H-bridge current. A high voltage op-amp configuration is set forth.