SMPS Ringing Noise Modeling and Managing Methodology for RFI Solutions in Mobile Platforms
In mobile platforms, RF interference issues caused by the switched-mode power supply (SMPS) ringing noise often arise in the on-the-go mode and the charging mode of the interface power management integrated circuits. In this paper, we introduce the modeling method for the SMPS ringing noise in the conventional two-level dc-dc converters and then, based on the modeling insight from the two-level dc-dc converter, we investigate and validate the modeling of the SMPS ringing noise in the three-level buck converters, which are newly adopted SMPSs for fast charging in mobile devices. To reduce such noise, we propose the novel SMPS noise-managing methodologies that handle the printed-circuit-board-level design optimization in mobile devices.
K. Kim et al., "SMPS Ringing Noise Modeling and Managing Methodology for RFI Solutions in Mobile Platforms," IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 8, no. 4, pp. 554-561, Institute of Electrical and Electronics Engineers (IEEE), Apr 2018.
The definitive version is available at https://doi.org/10.1109/TCPMT.2018.2799330
Electrical and Computer Engineering
Keywords and Phrases
Mobile platform; RF interference (RFI); Ringing noise; Switched-mode power supply (SMPS)
International Standard Serial Number (ISSN)
Article - Journal
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