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.:

US 10084414 B1

Date of Patent:

Sep. 25, 2018

Filed:

Sep. 15, 2014

Circuits and methods for switched-mode operational amplifiers

Applicants:

The Trustees of Columbia University IN the City of New York, New York, NY (US);

Baradwaj Vigraham, San Jose, CA (US);

Jayanth Kuppambatti, New York, NY (US);

Peter R. Kinget, Summit, NJ (US);

Inventors:

Baradwaj Vigraham, San Jose, CA (US);

Jayanth Kuppambatti, New York, NY (US);

Peter R. Kinget, Summit, NJ (US);

Assignee:

The Trustees of Columbia University in the City of New York, New York, NY (US);

Attorney:

Byrne Poh LLP

Primary Examiner:

Steven J Mottola

Int. Cl.

CPC ...

H03F 3/38 (2006.01); H03F 1/26 (2006.01); H03K 3/017 (2006.01); H03F 3/217 (2006.01); H03F 3/45 (2006.01); H03K 3/037 (2006.01); H03K 5/24 (2006.01);

U.S. Cl.

CPC ...

H03F 1/26 (2013.01); H03F 3/217 (2013.01); H03F 3/2173 (2013.01); H03F 3/45636 (2013.01); H03K 3/017 (2013.01); H03K 3/037 (2013.01); H03K 5/24 (2013.01); H03F 2200/264 (2013.01); H03F 2200/351 (2013.01); H03F 2203/45288 (2013.01);

Abstract

Circuits and methods for switched mode operational amplifiers are provided. In some embodiments, circuits are provided, the circuits comprising: an amplifier having an output; a first pulse width modulator (PWM) having an input coupled to the output of the amplifier and using a first periodic reference signal waveform; and a second PWM having an input coupled to the output of the amplifier and using a second periodic reference signal waveform, wherein the second periodic reference signal waveform is 180 degrees out of phase from the first periodic reference signal waveform. In some embodiments, circuits are provided, the circuits comprising: an amplifier having an output; and a plurality of pulse width modulators (PWMs) each having an input coupled to the output of the amplifier and using a corresponding unique one of a plurality of periodic reference signal waveforms, wherein the plurality of periodic reference signal waveforms are shifted in phase.

Find Patent Forward Citations

Vigraham, Baradwaj. (2018). Circuits and methods for switched-mode operational amplifiers (U.S. Patent No. 10084414). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10084414

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