NDLI: Design and analysis for noise suppression of DC/DC converter

Content Provider	IEEE Xplore Digital Library
Author	Terasaki, Masahiro Oohashi, Yuta Masuyama, You Sudo, Toshio
Copyright Year	2014
Description	Author affiliation: Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo, Japan (Terasaki, Masahiro; Oohashi, Yuta; Masuyama, You; Sudo, Toshio)
Abstract	DC/DC converters are widely used to provide various power supply voltages required for many electronic components on a board. Though DC/DC converter is more efficient than the linear regulator is, however, the switching noise becomes larger with the increase of the switching frequency. In particular, ringing noises at the sharp rising edge of the switching waveform occurs by the effect of the parasitic inductance of trace pattern. Then, this noise spreads out to the whole circuit board, and generates electromagnetic interference (EMI), which often causes a malfunction of the other electronic systems. In this paper, the methods to accurately reproduce the switching waveforms and to reduce ringing noises were investigated. For this purpose, two evaluation boards were designed, and total equivalent model was constructed by taking into account the parasitic inductances of traces on a board. Then, frequency-domain analysis was executed to find anti-resonance peaks in impedance properties for the switching loop. Next, time-domain simulation was executed by considering parasitic inductances. Finally, the optimal condition to suppress the ringing noise and electromagnetic radiation was confirmed by adjusting the switching loop into the critical damping condition.
Starting Page	109
Ending Page	112
File Size	1051728
Page Count	4
File Format	PDF
ISBN	9781479962570
DOI	10.1109/EDAPS.2014.7030827
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-12-14
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Damping Resistors EMI MOSFET Noise Suppression Switching Loop Noise Capacitors Switches Parasitic Inductance Ringing Noise Frequency measurement
Content Type	Text
Resource Type	Article

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