Faroe Islands the switching frequency of the AC-DC switching power supply module?(3)

We know that the lower the switching frequency, the smaller the switching loss, but on the other hand, with the reduction of the switching frequency, the volume of the Marine boost voltage power supply equipment will be reduced to the maximum, which is not conducive to miniaturization. When the switching Marine boost voltage power supply is working, due to the switching of the switching device, the magnetic core will vibrate, and the frequency range that the human ear can hear is about 20~20000Hz. In order to avoid audible noise, we usually choose to stay away from the 20 frequency KHz.

2. Faroe Islands Disadvantages of choosing an AC-DC control IC with a switching frequency higher than 135K

●High quality and reliable. Module power supply generally adopts fully automatic production, and is equipped with high-tech production technology, so the quality is stable and reliable.
Wide range of uses: The modular power supply can be widely used in various fields of social production and life such as aerospace, locomotives and ships, military weapons, power generation and distribution, post and telecommunications, metallurgy and mining, automatic control, household appliances, instrumentation and scientific research experiments. In particular, it plays an irreplaceable and important role in the field of high reliability and high technology.

When testing electronic and electrical equipment, the electronic and electrical equipment shall be tested for conducted interference voltage emission at its Marine boost voltage power supply terminal. Although the test frequency bands of different standards are different, the test frequency bands of most products are 150K~30M. It can be seen from the lower limit of the test frequency that the operating frequency of the switching Marine boost voltage power supply is close to 150K, and the more difficult it is to deal with the conducted disturbance.