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:
Dec. 02, 2025
Filed:
Mar. 16, 2023
Infineon Technologies Canada Inc., Ottawa, CA;
Infineon Technologies Canada Inc., Ottawa, CA;
Abstract
A power transistor current sense circuit. The control nodes of each of a power transistor and sense transistors are connected. The input nodes of the power transistor and each of the sense transistors are also connected. A voltage divider is connected between a reference voltage source and the output node of a second sense transistor. A negative feedback circuit is connected between the output of the voltage divider and the output node of the first sense transistor. The negative feedback circuit forces a voltage at the output node of the first sense transistor to be approximately equal to the divided voltage. A power transistor current determination component measures a sense current that passes through the first sense transistor, and from that detects the current passing through the power transistor.