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. 23, 2021
Filed:
Dec. 10, 2019
Texas Instruments Incorporated, Dallas, TX (US);
Steven Graham Brantley, Satellite Beach, FL (US);
Munaf Hussain Shaik, Tucson, AZ (US);
Bhuvanesh Radhakrishnan Kulasekaran, Kumbakonam, IN;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
An amplifier circuit includes a high-voltage output stage. The high-voltage output stage includes an output terminal, a high-side output circuit, a low-side output circuit, and a feedback circuit. The high-side output circuit sources current to the output terminal, and includes a high-side input transistor, a first high-side cascode transistor coupled to the high-side input transistor, and a second high-side cascode transistor coupled to the first high-side cascode transistor and the output terminal. The low-side output circuit sinks current from the output terminal, and includes a low-side input transistor, a first low-side cascode transistor coupled to the low-side input transistor, and a second low-side cascode transistor coupled to the first low-side cascode transistor and the output terminal. The feedback circuit is configured to bias the second high-side cascode transistor and the second low-side cascode transistor based on a sense voltage generated by the high-side output circuit or the low-side output circuit.