基于Buck—Boost电路的宽输出电压AC—DC电源设计

设计了一种宽输出电压的AC—DC开关电源，其主要特征是输出电压可以在较大范围内任意调节，解决了传统的开关电源只能输出几个特定电压值的问题。该设计的核心是反激变换电路和Buck—Boost电路。分析了这两种电路的工作原理及其应用，并且给出了具体的设计。实验表明，设计的电源能较好地实现了输出电压的宽范围调节。

Design of wide output voltage AC-DC power supply based on buck-boost circuit

AC-DC switching power supply with a wide range voltage output was designed.Its main feature is that the output voltage can be adjusted in a wide range.The problem that the traditional switching power supplies only have few specific voltage outputs is solved in the design.The flyback convert circuit and Buck-Boost circuit are the cores of the design.The working principle and applications of these two circuits are analyzed.The concrete design is given in this paper.The experiments show that a wide range regulation of the output voltage has been more successfully achieved in the design of the power supply.