Conducted-Noise Characteristics of a Digitally-Controlled Randomly-Switched DC-DC Converter with an FPGA-Based Implementation

Gamal M. Dousoky; Masahito Shoyama; Tamotsu Ninomiya

Conducted-Noise Characteristics of a Digitally-Controlled Randomly-Switched DC-DC Converter with an FPGA-Based Implementation

Gamal M. Dousoky

Masahito Shoyama

Tamotsu Ninomiya

Vol. 10, No. 3, pp. 228-234, May 2010

10.6113/JPE.2010.10.3.228

DC-DC converter

Electromagnetic compatibility

Electromagnetic interference

Field programmable gate arrays

Random number generation

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Abstract

This paper investigates the conducted-noise characteristics of a digitally-controlled randomly-switched dc-dc converter. In order to investigate the effect of the suggested digital controller on the conducted-noise characteristics of a dc-dc converter, three factors have been studied: the field-programmable gate array (FPGA) clock speed, the randomization ratio percentage, and the effect of using a closed loop feedback controller. A field-programmable gate array is much more flexible than analog control circuits, has a lower cost, and can be used for power supply applications. A novel FPGA-based implementation has been suggested for obtaining the experimental validations and realizing the studied concepts. Furthermore, the experimental results have been discussed and design guidelines have been included.

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Cite this article

[IEEE Style]

G. M. Dousoky, M. Shoyama, T. Ninomiya, "Conducted-Noise Characteristics of a Digitally-Controlled Randomly-Switched DC-DC Converter with an FPGA-Based Implementation," Journal of Power Electronics, vol. 10, no. 3, pp. 228-234, 2010. DOI: 10.6113/JPE.2010.10.3.228.

[ACM Style]

Gamal M. Dousoky, Masahito Shoyama, and Tamotsu Ninomiya. 2010. Conducted-Noise Characteristics of a Digitally-Controlled Randomly-Switched DC-DC Converter with an FPGA-Based Implementation. Journal of Power Electronics, 10, 3, (2010), 228-234. DOI: 10.6113/JPE.2010.10.3.228.