Novel step-up DC/DC converter with no right half plane zero and reduced switched voltage stress characteristics

Novel step-up DC/DC converter is introduced in this paper. This converter is realized with adding the switched capacitor voltage multiplier cell to the three switch step-down DC/DC converter that has been proposed in the literature. The proposed converter is analyzed in the steady state and the voltage transfer gain is obtained. It is also demonstrated that the voltage stress on all semiconductor devices is restricted to input voltage which allows the utilization of a power switch with lower drain source resistance. In order to further increase the voltage gain another switched capacitor voltage multiplier cell can be added to the proposed converter. By using the state space average technique it is shown that the control to output transfer function of the proposed converter and its derivatives doesn´t have right half plane zero (R.H.P.Z) that makes the dynamic behavior of these converters very fast against the load variations. The performance of the proposed converter and its derivation is verified using MATLAB/SIMULINK software.