The dynamics a PWM boost converter with resistive input

An average modeling methodology is proposed for deriving PWM programming rules that cause DC-DC power converters to look resistive at the input terminals. The proposed approach was verified by average and cycle-by-cycle simulation. The study investigated the large and small signal response issues and, in particular, the inner loop gain and outer loop response. It is demonstrated that the proposed method can be useful in the design of robust active power factor correctors with low total harmonic distortion (THD)