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:
Jul. 20, 2021
Filed:
Apr. 15, 2020
Elite Semiconductor Memory Technology Inc., Hsinchu, TW;
Shao-Ming Sun, Hsinchu, TW;
ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC., Hsinchu, TW;
Abstract
A class D power amplifier with novel design is provided. The amplifier includes an input stage, a periodic signal generator, a comparator, a power output stage, and a boost circuit. The input stage is coupled to a first supply voltage. The periodic signal generator generates a periodic signal and a reference signal. The power output stage is coupled to a second supply voltage. The boost circuit compares an output of the input stage with the reference signal, and thereby adjusts a value of the second supply voltage. The value of the second supply voltage is larger than a value of the first supply voltage. The reference signal is proportional to an amplitude of the periodic signal, and the amplitude of the periodic signal is determined by the value of the second supply voltage.