What is switch mode power supply

SMPS is switch mode power supply abbreviation.It's also called transformer,converter,driver.It is a high-frequency electrical energy conversion device and a type of power supply. Its function is to convert a precise voltage into the voltage or current required by the user through different forms of architecture. The input of a switching power supply is mostly AC power (such as mains power) or DC power, while the output is mostly for devices that require DC power, such as personal computers, and the switching power supply converts voltage and current.

Switching power supplies are different from linear power supplies. The switching transistors used in switching power supplies mostly switch between fully open mode (saturation zone) and fully closed mode (cutoff zone), both of which have the characteristic of low dissipation. The conversion between switches will have high dissipation, but the time is short, so it is more energy-efficient and produces less waste heat. Ideally, switch mode power supplies themselves do not consume electrical energy. Voltage stabilization is achieved by adjusting the time of transistor conduction and disconnection. On the contrary, in the process of generating output voltage in a linear power supply, the transistor operates in the amplification region and consumes electrical energy itself. The high conversion efficiency of switch mode power supplies is one of its major advantages, and due to their high operating frequency, small and lightweight transformers can be used. Therefore, switch mode power supplies are smaller in size and lighter in weight than linear power supplies.

Switching power supply 5V 12V 24V 36V 48V 60V products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instruments and meters, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, LCD displays, LED lighting fixtures, communication equipment, audio-visual products, security monitoring, LED light strips, computer cases, digital products and instruments, and other fields.