Design of slope compensation circuit in peak-current controlled mode converters

Stability of the peak-current controlled mode converters (PCCMC) is analyzed, it is pointed out that the PCCMC operating in discontinuous conduction mode (DCM) are stable, while it must be added with slope compensation circuit when it operates in continuous conduction mode (CCM) and the duty cycle (d) is larger than 0.5. Based on analyzing effect of the slope compensation circuit on the oscillator, a design method of the leading edge blanking circuit is presented. An optimal design method of the slope compensation circuit is suggested. Experiment results are in positive to the analysis showing the feasibility of the proposed methods.