The Continuous Conduction Mode from a schematic point of view looks similar to the transition mode type but its operation is quite different. Unlike the transition mode, the ripple current has a much lower peak to peak amplitude of the inductor ripple current and does not go to the 0 A axis. This is where the term “continuous” comes from and means the inductor does not dump all of it’s energy at each PWM cycle like the Transition Mode does. This produces a higher quality composite of the 60 Hz AC line current making it possible to achieve power factors near unity with lower harmonic content. This is especially important at higher power levels as the higher currents magnify radiated and conducted EMI levels.