Traditional totem pole bridge-less power factor correction converter (PFCC) operating in continuous current mode (CCM) are limited in ability to achieve high power density due to high switching losses. To this, a new auxiliary circuit has been added to the PFCC to enable soft switching, thereby reducing switching losses and improving power density. Addressing the limitations of traditional dual-loop proportional integral (PI) controllers in balancing the speed and stability of totem pole bridge-less PFCC, an adaptive fuzzy PI controller for totem pole bridge-less PFCC is proposed. By designing a fuzzy controller, the parameters of the voltage-loop PI controller are adaptively adjusted. Simulation tests validated the correctness and feasibility of the proposed auxiliary circuit. The proposed adaptive fuzzy PI controller outperforms the traditional dual-loop PI controller in terms of performance metrics such as overshoot suppression and regulation time, etc. The controller has faster response speed, more stable voltage control performance, and stronger interference resistance. This study provides guidance for achieving high power density and excellent performance in such converters.