Based　on　One-Cycle　Control,　an　improved　fast　dynamic　response　single-phase　boost　power-factor-correction　rectifier　is　proposed　in　this　paper.　A　load　current　feedforward　loop　is　in　parallel　with　the　output　voltage　feedback　loop,　which　significantly　improves　the　dynamic　response　of　the　converter　to　load　steps.　The　distortion　of　the　input　current　is　low　due　to　the　output　ripple　offset　with　an　adaptive　ripple　compensator　and　low　crossover-frequency　of　the　voltage　loop.　Comparison　of　the　traditional　OCC　PFC　rectifiers　and　the　proposed　OCC　rectifier　is　given　in　details.　In　the　end,　the　simulations　verified　the　superiority　of　the　proposed　control　approach.　©　2012　IEEE.