With the application of digital control, the problem of one-step-delay appears. It limits the achievable control bandwidth. Compared with one-step-delay, minimized delay can achieve superior performance. However, it leads to the low-frequency aliasing phenomenon because sampling is not happened in the middle of either the turn-on or the turn-off times of IGBT. To weaken the influence of aliasing and reduce the total harmonics distortion (THD) of output current, the strategy of reducing the inductor current feedback coefficient by adjusting non-dominant poles is proposed. Simulation and experimental results are provided to verify the feasibility and effectiveness of the scheme.