Unlike continuous PWM techniques, Discontinuous PWM (DPWM) minimizes semiconductor switching losses and elevates overall system efficiency by introducing intentional breaks in the modulation process. This technical note details the operating principles and implementation of DPWM methods, which function by injecting a zero-sequence common-mode voltage to saturate the phase references, locking one of the three inverter legs from switching for 120° within a 360° cycle. This strategy increases DC-bus voltage utilization, raising the maximum linear modulation index by approximately 15%. The note classifies zero-sequence signal generation methods, outlines thermal distribution across switches, and covers variants such as Split-Clamp PWM (SCPWM). The modulation algorithms are experimentally validated on a two-level inverter driving a balanced three-phase RL load, showing how DPWM reduces passive filter size constraints to maximize converter power density.