Abstract
Synchronous buck converters generate broadband noise typically in 50 - 300 MHz range. in this paper, the root cause of this broadband noise and possible coupling mechanisms are analyzed. Then, a list of EMC design guideline for minimizing the broadband noise is presented. the guideline contains circuit level guideline which involves input filtering, component selection, and an effective snubber strategy using a parallel resistor and inductor. the guideline also contains layout level guideline, which involves decoupling capacitor placement, layer stack up, and minimizing exposed phase voltage area. for each suggested guideline item, an example illustrates the impact of the particular strategy through experimental results or SPICE simulations, leading to a strong reduction of broadband noise from the synchronous buck converter. © 2009 IEEE.
Recommended Citation
K. Kam et al., "EMC Guideline for Synchronous Buck Converter Design," IEEE International Symposium on Electromagnetic Compatibility, pp. 47 - 52, article no. 5284594, Institute of Electrical and Electronics Engineers, Dec 2009.
The definitive version is available at https://doi.org/10.1109/ISEMC.2009.5284594
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Broadband EMI; SMPS; Snubber; Synchronous buck converter
International Standard Book Number (ISBN)
978-142444267-6
International Standard Serial Number (ISSN)
1077-4076
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Dec 2009
