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:
Oct. 26, 2021
Filed:
Jan. 11, 2019
Bose Corporation, Framingham, MA (US);
Zoran Coric, Framingham, MA (US);
Bose Corporation, Framingham, MA (US);
Abstract
The technology described in this document can be embodied in an audio power amplifier that includes a first channel and a second channel. Each of the first channel and the second channel includes an input to receive an input signal, a pair of switching devices, drive circuitry for driving the pair of switching devices to produce a signal, and an output filter to filter the signal from the pair of switching devices. The output filter is configured to provide the filtered signal to an audio load. Each of the first channel and the second channel includes a voltage feedback loop to provide a voltage of the filtered signal to a voltage controller of the audio power amplifier, and a current feedback loop to provide a current of the filtered signal to a current controller of the audio power amplifier. The audio power amplifier includes a summer for combining the input of the first channel and the input of the second channel when an output of the first channel is connected to an output of the second channel.