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随着全球对能源问题的重视,电子产品的耗能问题将愈来愈突出,如何降低其待机功耗,提高供电效率成为一个急待解决的问题。传统的线性稳压电源虽然电路结构简单、工作可靠,但它存在着效率低(、体积大、铜铁消耗量大,工作温度高及调整范围小等缺点。为了提高效率,人们研制出了开关式稳压电源,它的效率可达85%以上,稳压范围宽,除此之外,还具有稳压精度高、不使用电源变压器等特点,是一种较理想的稳压电源。正因为如此,开关式稳压电源已广泛应用于各种电子设备中,本文对各类开关电源的工作原理作一阐述。
With the global emphasis on energy issues, the energy consumption of electronic products will become more and more prominent. How to reduce its standby power consumption and improve the power supply efficiency has become an urgent issue. Although the conventional linear regulated power supply has the advantages of simple circuit structure and reliable operation, it has the disadvantages of low efficiency (large volume, large consumption of copper and iron, high working temperature and small adjustment range etc. In order to improve the efficiency, people have developed a switch Regulated power supply, its efficiency up to 85%, a wide range of voltage regulator, in addition, but also has high precision voltage regulator, do not use power transformers and other characteristics, is a more ideal power supply. So, switching power supply has been widely used in a variety of electronic equipment, this article on the working principle of various types of switching power supply made an elaboration.