Work

On the Implementation of “Dead Time” in a Synchronous Step-Down Converter

Year: 2025

Type: article

Abstract: The article proposes a synchronous step-down converter implemented with P-channel and N-channel transistors. The transistors are controlled by a single driver, and “dead time” is implemented with external circuits. When an initial problem occurs with ensuring this time in practical implementation, the influence of the Schottky diode capacitance on “dead time” is considered. Mathematical expressions were derived, showing the ratio of the value of this capacitance and the input capacitance of the transistor, and the influence of this ratio on the shape of the leading edge of the pulse for switching on the transistor. Results of computer simulation are given for different ratios of the two capacitances. The results of the mathematical description and computer simulation were used to select a suitable transistor and Schottky diode and are applied in the subsequent practical implementation. Conclusions and recommendations were done, for the synchronous step-down converter, as well as for other cases of implementing dead time in the manner considered.

Source: Energies

DOI: 10.3390/en18051095

Authors: Hristo Mihailov Antchev, Borisov Borisov Dimitar

Institution: University of Chemical Technology and Metallurgy

Language: English

Topic: Advanced DC-DC Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: University of Chemical Technology and Metallurgy