开关电源工作频率高于30 kHz时的绝缘要求

Insulation Requirements of Electronic Products with Frequency Higher than 30 kHz

主要介绍当音视频、信息技术和通信技术类电子产品中使用的开关电源的工作频率高于30 kHz时的绝缘要求以及是否满足标准要求的检测或判定方法。通过分析开关电源的基本工作原理,进行摸底测试,从而确定开关电源中高频电路所在的位置,并结合开关电源所用变压器的绝缘结构和材料特点进行具体的分析。

This paper mainly introduces the insulation requirements of switching power supply used in audio and video,information technology and communication technology electronic products when its operating frequency is higher than 30 kHz,and the detection or determination methods for whether it meets the standard requirements.By analyzing the basic working principle of switching power supply,the position of high-frequency circuit in switching power supply is determined through bottom testing,and the insulation structure and material characteristics of transformer used in switching power supply are specifically analyzed.