Power Supply Noise in Bang-Bang Control Class D Amplifier

Author

Ge, Tong ; Chang, Joseph S. ; Shu, Wei

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

fYear

2007

fDate

27-30 May 2007

Firstpage

701

Lastpage

704

Abstract

In this paper, the effect of power supply noise, qualified by power supply rejection ratio (PSRR), on bang-bang control class D amplifier (BCCD) is investigated. By modeling the BCCD with power supply noise, the mechanisms are modeled. Further, by means of a novel analysis based on a double-Fourier series, the parameters related to power supply noise is derived and thereafter expressions for PSRR are derived. The analyses are verified by means of computer simulations and by measurements on practical circuits. The relationships derived herein provide good insight to the design of BCCDs, including how various parameters may be varied/optimized to meet a given PSRR specification.

Keywords

Fourier series; Fourier transforms; amplifiers; circuit noise; integrated circuit measurement; integrated circuit modelling; power supply circuits; bang-bang control amplifier; class D amplifier; computer simulations; double-Fourier series; power supply noise; power supply rejection ratio; Bang-bang control; Digital modulation; Hearing aids; High power amplifiers; Low voltage; Power amplifiers; Power supplies; Pulse width modulation; Signal design; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.377905

Filename

4252731