Sep.29

September 29, 2013
0 jakob

Development and verification of printed circuit board toroidal transformer model

Authors: Pejtersen, Jens ;  Mønster, Jakob Døllner ; Knott, Arnold

Presented at: 28th Annual IEEE Applied Power Electronics Conference and Exposition, Long Beach CA

Abstract: An analytical model of an air core printed circuit board embedded toroidal transformer configuration is presented. The transformer has been developed for galvanic isolation of very high frequency switch-mode dc-dc power converter applications. The theoretical model is developed and verified by comparing calculated parameters with 3D finite element simulations and experimental measurement results. The developed transformer model shows good agreement with the simulated and measured results. The model can be used to predict the parameters of printed circuit board toroidal transformer configurations with a maximum deviation of approximately 22%.

Link to paper

Scientific publications

Sep.29

September 29, 2013
0 jakob

Debugging of Class-D Audio Power Amplifiers

 

Authors: Crone, Lasse ; Pedersen, Jeppe Arnsdorf ; Mønster, Jakob Døllner ; Knott, Arnold

Part of: Proceedings of the 132nd AES Convention, pages: 8-14, 2012, AES

Abstract: Determining and optimizing the performance of a Class-D audio power amplier can be very dicult without knowledge of the use of audio performance measuring equipment and of how the various noise and distortion sources in uence the audio performance. This paper gives an introduction on how to measure the performance of the amplier and how to nd the noise and distortion sources and suggests ways to remove them. Throughout the paper measurements of a test amplier are presented along with the relevant theory.

Link to paper

Scientific publications