A new behavioral model for nonlinear analysis of Class D Amplifiers for PWM applications

Author

Malekzadeh, F. Arfaei ; Mahmoudi, R. ; van Roermund, A.H.M.

Author_Institution

Dept. of Electr. Eng., Eindhoven Univ. of Technol., Eindhoven, Netherlands

fYear

2010

fDate

27-28 Sept. 2010

Firstpage

138

Lastpage

141

Abstract

Switch mode PWM amplifiers are good solutions for amplification of. Static behavioral models fail to predict the amplitude and frequency dependent phase-Gain characteristics of Class D Amplifier inside PWM modulator. Nonlinear device models are accurate but very complex and have convergence problems. Therefore there is a need to develop an accurate and time efficient behavioral model suitable for nonlinear analysis of this type of amplifier. In this paper a new behavioral model is presented which is suitable for nonlinear analysis of a Class D used in limit cycle PWM modulator. All the spectral parameters of the output of a single ended Class D are accurately predicted by this model and validated through comparison with a BSIM4 foundry device model.

Keywords

power amplifiers; semiconductor device models; behavioral model; class D amplifier; limit cycle PWM modulator; nonlinear analysis; nonlinear device model; phase-gain characteristic; spectral parameter; switch mode PWM amplifier; Analytical models; Integrated circuit modeling; Limit-cycles; Mathematical model; Power amplifiers; Pulse width modulation; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Integrated Circuits Conference (EuMIC), 2010 European

Conference_Location

Paris

Print_ISBN

978-1-4244-7231-4

Type

conf

Filename

5613763