本文以小容量开关稳压电源为对象,论述了电子设备电源小型化、轻量化的技术现状和发展动向。指出高频化是方向,集成化是至关重要的手段。用磁性元件作控制器件有利于提高开关频率和减小噪声,但磁性材料的高频损耗必须小。只有从电路技术、元器件、材料等方面同时采取措施才能使电源进一步小型、轻量化。 In this paper, small-capacity switching power supply for the object, discusses the electronic equipment power supply miniaturization, lightweight technology status and development trends. Pointed out that high-frequency is the direction, integration is crucial means. The use of magnetic components as a control device helps to improve the switching frequency and reduce noise, but the high-frequency loss of magnetic materials must be small. Only from the circuit technology, components, materials and other aspects of measures taken simultaneously to make the power further small, lightweight.