最後，我們更進一步的使用TSMC 0.5μm 5V/40V CMOS製程實現文中的主動式功率因數校正電路，以驗証本架構之可行性。並且經由模擬結果顯示本架構在固定及變動式負載下，皆可達到99%以上的功率因數值。 In last years, the flourishing development of electronic industry fills with a lot of electronic products in our life. However, basic power components are indispensable equipment for maintain various electronic products. Since most demands rely mainly on AC to DC converter in these basic power equipments. The conversion efficiency is quite important to power equipments. The quality of assessing conversion efficiency is to regard power factor as main basis. In present industrial circle and academia has many research and relevant products to improvement power factor effectively. Therefore, it has quite important research value how about to improve power efficiency of power equipments. The calculation of power factor is according to ratios of real power and total power. Lower power factor electric equipment representative have unnecessary busywork and harmonic components. Electronic equipment produces busywork and harmonic components that not only increase unnecessary loading and power consumption in public power equipment. But also harmonic components insert into public power system that causes deteriorating of power quality. Risks increase into break and mistake of precision instrument.
In order to improve efficiency of the electric equipment and reduce the harmonic pollution caused. In this thesis proposes a high efficient active power factor corrector circuit. This architecture is with relation among voltage, current, and loading. The ideal input current is calculated from input voltage and output loading. This ideal input current will make sure nearly with between phase and undistorted wave of input voltage. It can dispel current distortion and phase difference between input voltage and input current, and it can reduce busywork consumption and harmonic components.
Finally, the proposed active power factor correction circuit is implemented by TSMC 0.5μm 5V/40V CMOS technology to verify feasibility of the architecture. Simulation results show that power factor can be more than 99% in the proposed architecture for constant and variable loading.
