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:
Nov. 09, 2021
Filed:
Feb. 19, 2020
Texas Instruments Incorporated, Dallas, TX (US);
Marius Vicentiu Dina, Inver Grove Heights, MN (US);
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A switch circuit includes: a power transistor having a source coupled to a supply terminal, a drain coupled to an output terminal, and a gate; a bipolar transistor having a collector coupled to the supply terminal, an emitter coupled to the gate of the power transistor, and a base; a bias circuit to control an emitter current of the bipolar transistor; and a resistor coupled between the supply terminal and the base. A control circuit receives a current at a current input to turn the bipolar transistor on responsive to a control input being in a first state, and ceases receiving the current at the current input to reduce a gate-source voltage of the power transistor responsive to the control input being in a different second state.