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1.引言 开关电源是一种近年来发展迅速、应用广泛的新型电源。与传统的线性电源相比,它有体积小、效率高的突出优点,也有噪声较大、可靠性稍低的不足之处。但由于其优点是显著的,因此,在计算机、通信及航天等许多领域,开关电源已几乎全部取代了线性电源。 人们在研制或选用开关电源时,由于担心电网的波动,往往希望稳压范围越宽越好,但却容易忽视另一个重要方面,那就是开关电源的稳压范围对其自身的转换效率及可靠性等都有影响。下面作一分析。
1. Introduction Switching power supply is a rapid development in recent years, widely used in new power supply. Compared with the traditional linear power supply, it has the prominent advantages of small size and high efficiency, as well as the shortcomings of larger noise and lower reliability. However, due to its significant advantages, the switching power supply has almost completely replaced the linear power supply in many fields such as computers, communications and aerospace. People in the development or use of switching power supply, due to concerns about the power grid fluctuations, often hope that the wider the better voltage range, but it is easy to overlook another important aspect, that is, switching power supply voltage range of its own conversion efficiency and reliability Sex and other have an impact. Here’s an analysis.