This paper describes a modified one cycle control technique that controls the duty ratio of a switch in the system The one cycle control method gives firmness to the source side disturbances, but this technique shows infirmness with the load side disturbances. The proposed new improved one cycle control technique rectifies the drawbacks of one cycle control technique. It strongly rejects both source side disturbances and load side disturbances. Simulations completed with buck converter and modified one cycle controls and result are discussed. © 2014 IEEE.