RT Journal Article
SR Electronic
A1 Frivaldský, Michal
A1 Pčola, Marcel
A1 Biel, Zdeno
A1 Kučera, Roman
A1 Franko, Marek
A1 Holček, Roman
T1 Node Ringing Reduction of Synchronous Buck Converter
JF Communications - Scientific Letters of the University of Zilina
YR 2023
VO 25
IS 3
SP C48
OP C55
DO 10.26552/com.C.2023.054
UL https://komunikacie.uniza.sk/artkey/csl-202303-0020.php
AB This paper discusses the issue related to the switching regulators operated at high switching frequencies, where it is necessary to eliminate the influence of parasitic components of the converter's main circuit. In more detail it deals with the node-ringing phenomena, which is typical for synchronous buck converters. The existence of the parasitic inductances arising from the printed circuit board conductive paths, induce voltages, which are several times higher than nominal input voltage, thus it increases the risk of damage of the power transistors. Therefore, optimization of the circuit is required to reduce the voltage spikes and therefore improve safety margin related to nominal operation. In this paper, node-ringing phenomena is introduced, while the optimization methodologies for its reduction are described and verified by experimental analysis.