: For the Vienna rectifier, the neutral-point voltage (NPV) mitigation as well as reducing power losses is essential. It can be addressed by applying discontinuous pulse width modulation (DPWM) method that incorporates NPV control. However, in two-parallel interleaved Vienna rectifier, consideration of mitigating high-frequency circulating currents (HFCCs) should also be crucial. In this paper, a carrier-based DPWM (CB-DPWM) method is proposed. The proposed method monitors the NPV in real-time and selects an appropriate clamping state to suppress its fluctuation. However, when an interleaving scheme is applied for input current ripple reduction, phase-shifting the carrier of one converter produces large HFCCs during the clamping interval. To mitigate it, the proposed method applies the interleaving scheme only during non-clamping interval, and disables it otherwise. Since it requires no register configuration, average-current error caused by phase variation does not occur, while simply implemented. The effectiveness of the proposed method is verified through simulation results.