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. 30, 2014
Filed:
Jul. 14, 2008
Gerald W. Steele, Tucson, AZ (US);
Tony R. Larson, Tucson, AZ (US);
Gerald W. Steele, Tucson, AZ (US);
Tony R. Larson, Tucson, AZ (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A hot swap controller includes a shunt resistor (-) and a power transistor (-) having a source coupled to a load maintains the first power transistor in a fully-turned-on condition to cause it to deliver a load current contribution (I) which flows through the shunt resistor and the power transistor to the load (). Current sensing circuitry (-) produces a first control signal (V-V) equal to the difference between a DC component (V) proportional to a first load current contribution (I) flowing in the first shunt resistor and a feedback-based component (V). A control amplifier (-) produces a second control signal (V) in response to the first control signal to modify a drive signal (-) to the power transistor so as to reduce a channel resistance of the power transistor if the first control signal exceeds a predetermined level.