簡析BOOST-BUCK變換器

摘要：本文提出一種新型的BOOST-BUCK變換器，該變換器具有輸入輸出電流連續，輸出電壓可調范圍大等優點。由于該變換器的輸入電流連續，該變換器適合于功率因數校正電路，且其實現較為簡單。該變換器的輸出電壓可調范圍大，可以大于或小于輸入電壓，這很好的克服了傳統的BOOST變換器輸出電壓必須大于輸入的缺點。理論分析，仿真和實驗均驗證了該變換器的實用性。 敘詞：BOOST-BUCK變換器，BOOST變換器，功率因數校正。 Abstract：A novel BOOST-BUCK converter is proposed in this paper. The converter has a continue input and output current, and wide output voltage range. For the continuous input current, the converter can be used in power factor corrector, and the realization is simple. Since the output voltage could be bigger or smaller than the input voltage, the converter can solve the limitation of the boost converter that its output voltage must bigger than the input voltage. The proposed converter is analyzed, simulated and experimentally verified. Keyword：BOOST-BUCK converter, BOOST converter, PFC.