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. 28, 1999
Filed:
Sep. 03, 1996
John R Qualich, Buffalo Grove, IL (US);
Motorola Inc., Schaumburg, IL (US);
Abstract
A loss-less load current sensing driver and method includes providing current (603) to a load from a power supply through a transistor. A voltage drop is measured (605) across the transistor responsive to the provision of current to the load. A temperature of the transistor is measured (607) and a temperature-indicating signal is provided. The temperature-indicating signal is translated (609) into a predicted transistor on-resistance. A magnitude of the current provided to the load is determined dependent on the measured voltage drop across the transistor and the predicted transistor on-resistance, preferably by dividing (611) the measured voltage drop by the predicted transistor on-resistance.