The development trend of DC switching power supply

With the deepening of the research on DC switching power supply technology, the performance of the switching power supply has been further improved, and the DC switching power supply has been outstanding in the field of power supply. At present, the application range of switching power supply is more and more wide, and its prospect is bound to be bright. Here, its inevitable development trend is summarized in the following aspects:

(1) Miniaturization, lightweight and high-frequency

The volume and weight of the switching power supply are mainly determined by the energy storage components (magnetic components and capacitors), so the miniaturization of the DC switching power supply is essentially to reduce the volume of the energy storage components as much as possible. In a certain range, the increase of switching frequency can not only effectively reduce the size of capacitors, inductors and transformers, but also suppress interference and improve the dynamic performance of the power system. Therefore, high frequency is the main development direction of DC switching power supply.

(2) High efficiency, high power density and high reliability

The switching power supply uses much less components than the continuous working power supply, so the reliability is improved. The life of components such as capacitors, optocouplers and power MOSFETs determines the life of switching power supplies. Therefore, it is necessary to use as few components as possible to improve integration. In addition, the working efficiency of DC switching power supply is high, which will reduce its own heat and easy heat dissipation, so as to achieve high power density and high reliability.

(3) Low noise, green pollution-free and intelligent

(4) Universal input voltage

Dc switching power supply will make its input voltage can be widely adapted to the voltage specifications of the power grid in the world, so as to achieve global use.

(5) Perfect safety performance

Dc switching power supply requires complete protection measures, and should be able to cut off the power supply in time when the circuit is abnormal.