In this article, an active power decoupling integrated active clamp flyback converter (DACF) is analyzed and optimized. Different from the active clamp flyback (ACF) converter, the DACF converter could regulate output voltage and shape input current simultaneously, with modified converter parameters and different control methods. The working principles and waveforms of DACF are fully investigated and compared with ACF, which also illustrates the peculiarity of DACF. Based on the control-to-output relationships through theoretical derivations, two control methods are designed for DACF. Finally, the concept is verified by experimental results taken on a 100W-rated prototype.
