Transient Response Improvement of DC to DC Converter by Using Auto-tuned PID Controller

The DC-DC converters are extensively used in modern telecommunication and consumer electronics. Stability is one of the most aspect in designing of automatic control of DC-DC buck converter. In this paper a discrete auto-tuning PID scheme is developed for DC-DC converters for fast response time. When the required output does not follow the set point, a controller for synchronous buck converter is to be used with objective of keeping the error as minimum. The algorithm is used for the tuning discrete PID controller to obtain its parameters with a minimum error and is applied to Synchronous buck converter to improve its performance. For fast transient response, settling time and rise time of the Converter, the controller gains are continuously modified. For its implementation a buck converter is designed and its MATLAB/Simulink model is developed. The simulation results describes the effectiveness of the developed algorithms.