ER40 high frequency transformer vertical

High-frequency electronic transformer has two main concepts, one is "electronics", which is different from power transformer and RF signal transformer, according to my work in the field of switching power converter, "electronics" here should refer to "power electronics" and the other is "high frequency", traditionally, 20 kHz or more is high frequency. But at present, the understanding of high frequency in different fields may be different. For low power (tens to hundreds of watts) converters, hundreds of kilohertz ago, it was considered high frequency, and high power (hundreds to thousands of watts), tens of thousands of kilohertz calculations of high frequency, high power frequency conversion, tens of kilohertz of high frequency. But in any case, high-frequency electronic transformer should refer to "application frequency range from tens of kHz to several megahertz switching power conversion circuit power transformer, its operating frequency range is not frequency and radio frequency, used in switching power converter, different power and radio transformer, is energy transfer in the transformer signal Handle differently.

In short, the high frequency electronic transformer is developing at high frequency, that is, high power density and low plane. High power density is the need of market development, and high frequency is the most effective way to increase power density. With the development of high frequency magnetic materials, the situation of high-frequency transformers has also been created. At high frequencies, the key to improve the power density of transformers is the design of transformer technology. As the high frequency and eddy current loss become very important, the traditional design method can not meet the high frequency requirements, so the design of the core and winding is becoming more and more important. The requirement of low plane transformer makes PCB coil widely used, but the design of transformer brings new difficulties, especially the air gap of transformer, such as sweep back transformer, harmonic transformer, PFC inductance. In short, the high frequency, low surface and new design technology of electronic transformer are developing.

At present, high frequency transformers are mainly used in the field of high frequency power conversion. Generally speaking, electronic transformers are oriented to high frequency, plane, integration, fast mode, array, mixing direction and the consequent new analysis methods, such as electromagnetic field analysis methods and new technology design, such as optimization design, multi-domain integrated design, and new manufacturing technology challenges to traditional processes. Due to the development of frequency and magnetic materials, many semiconductor processing technologies can be applied in the manufacture of high frequency transformers, or transformers are not a separate device, which can be incorporated with power converters through thick and thin film technology as one. In the case of low power, this trend is very obvious. The above is a summary of the principles and the difference between the ICT tester and the FCT function test. Mainly for you to use, in principle, and what can be done to test several aspects of the test, for you to make a difference.