Abstract: A transitional grouping mode of control is introduced using microcontroller for the buck boost converter. A constant output voltage is obtained by applying a input voltage from 8V to 14V along with increase in saturation. The price, efficiency, decrease in wrinkle in the waveform and voltage across the load can be superior. By introducing combination A and B between the three modes with better transient response which reduces the distortions in the output voltage. By using all the transitional combination mode, a ripple content will be decreased and efficiency can be better in the regulated output voltage.

Keywords: Combination Mode, Efficiency, Micro Controller, Saturation, Transitional.