Low-Cost Buck Converter and Voltage Sensing Method for Low-Voltage Systems

Abstract

Small, low-voltage buck converters commonly used in the renewable energy industry, the micro grid, and the automotive industry require insulated gate amplifier voltages, which can be a significant economic burden on the system. Methods/Statistical analysis: Therefore, in this paper, we propose a voltage detection method that detects the voltage of the converter and the low side buck converter that does not require the insulation gate amplifier voltage by changing the switch position from + side to-side. To verify this, we used simulations and compared them with existing converters. Findings: Unlike the conventional buck converter, the Modified buck converter can sense the voltage when the switch is turned on, but when the switch is off, the output voltage and the voltage of the switch are added to the output terminal, Accurate sensing is impossible. For this reason, a voltage sensing method different from the conventional one is required for the Modified converter. Improvements/Applications: low-side Buck-converter that does not require isolated gate amplifier voltage and a voltage detection method to detect the voltage of this converter.