Chopper PWM-Based Class-D Amplifier

Title

Chopper PWM-Based Class-D Amplifier

 Author

Rozsa, Nuriel (TU Delft Electrical Engineering, Mathematics and Computer Science)

Contributor

Fan, Q. (mentor)

Degree granting institution

Delft University of Technology

 Date

2021-01-15

 Abstract

Class-D amplifiers are widely used in audio applications that require a high power efficiency. A high PSRR is beneficial when the power supply contains significant audio band content. Due to mismatches present in the feedback, these can dominate the PSRR of the class-D amplifier, provided the amplifier has sufficient loop gain. No literature has been found that describes a solution to improving the PSRR and CMRR across the full audio band. This work proposes chopping of the input and feedback resistors in a class-D to address this issue. With this technique's application, a >100dB PSRR and CMRR across the audio band is achieved.

 Subject

CDA
Class-D
Amplifier
Chopper
Chopping
Chopped Amplifier
PSRR
CMRR
HV Chopper
HV switch

 To reference this document use:

http://resolver.tudelft.nl/uuid:81f6832a-98dc-4e06-bed9-ee51d33367ea

 Embargo date

2023-01-14

 Part of collection

Student theses

 Document type

master thesis

 Rights

© 2021 Nuriel Rozsa
Files
PDF Master_Thesis_Nuriel_Rozsa_v2.pdf 5.21 MB
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