Design of a Buck Converter with an Analogue PI Controller for Wide Load Range Applications

Efficient buck converters are crucial for achieving optimal performance, reliability, and cost-effectiveness in a wide range of electronic devices and systems. Buck converters are widely used in a variety of applications where a stable, low-voltage DC output is required. Designing an efficient buck converter requires a careful balance of trade-offs between cost, performance, size, weight, and other factors. In this paper, the efficiency of the Buck converter is increased through the PI controller using an operational amplifier (Op-Amp), also known as an analog PI controller. The performance of the proposed model of the analog PI controller is further compared with the digital buck converter. The stable control system is applied on the Buck converter to decrease output voltage up to 50% w.r.t input voltage. Pulse width modulation (PWM) is used in the proposed model to control variations in waves. The design has been simulated at SIMULINK and PROTEUS8 with the same results.