摘要
开关电源非常广泛地应用在通讯、计算机、汽车和消费电子产品等领域。开关电源主要有两种模式,一种是AC/DC模式,一种是DC/DC模式。作为开关电源核心元件的变压器主要起隔离、变压、能量转换的作用。磁芯是变压器的关键元件,他的选择尤为重要,他对变压器的效率、稳定性等起着决定性的作用。变压器的发展方向是高频化、小型化。主要论述了高频小功率DC/DC变压器的设计方法及低损耗磁芯的选用原则。
The switch mode power supply is widely used in communication,computer, automobile and electric products. It has two series,one is AC/DC,the other is DC/DC. The transformer plays an important role in the switch mode power supplies, such as isolating, voltage changing and energy transferring. The ferrite core is the key component for the transformer,its property decides the efficiency and reliability of a transformer, The developing trend is high frequency and small - sized to a transformer. This paper introduces how to design a single ended forward transformer and how to choose the lower losses power ferrite core to meet the performance requirements of DC/DC transformer.
出处
《现代电子技术》
2007年第8期19-20,23,共3页
Modern Electronics Technique
关键词
高频
单端正激变压器
低功耗铁氧体
设计
high frequency
single ended forward transformer
lower losses ferrite
design
