In early electronic devices, the linear power supply was the main power supply method. This type of power supply structure is simple, usually through a power frequency transformer, rectifiers, and linear voltage regulators, which output a stable voltage. After improving the power is hard to meet the requirements of long-term stable operation. As the application scenarios for electronic products continue to expand, the traditional linear power supply is gradually expose limitation.
With the development of semiconductor technology, switch-mode power supply start enert industry and the communications area. SMPS through high frequency switch mode conducts an energy transformation. It significantly improves transformation efficiency, and significant reduce the size of the transformer, that make the power supply design more compact. Exactly, this technology breakthrough means that switch-mode power supply will gradually replace the linear power supply, and become the main power solution of modern electronics systems.
In the continuous maturing of SMPS technology, the power supply has undergone some changes. Compare the open-frame power supply, the external switch-mode power supply has the advantages of safety isolation, thermal management, and system integration. The external power supply is able to remove the equipment body from high voltage and heat sources. That efficient improve the reliability of the entire machine, and more easy meet the safety certification requirements of different countries and areas. Therefore, the external power supply is widely used for medical, industrial, and communication purposes.
Moreover, following the improvement of device power and system voltage, the 48V SMPS power supply become the first choice solution for more and more applications. At the same time of 48V system guarantees output wattage, that efficient reduce work current, reducing line loss, and heat problems. It is important of needing stable operation for a long time. External 48V switching power supply causes stable and highly efficient operation, which becomes a standard one of the configurations of communication devices and industry.
In high power application, 320 watt power supply provide higher requirement in power supply design. Modern 320W SMPS not only need to high efficient and stable output, but also need to achieve good heat dissipation in a limited space. Through optimizing the topology structure and key components choice, the 320w switch mode power supply is able to keep reliable performance in continuous operating conditions. That satisfies the complex use requirement in the load environment.
Currently, the external switch-mode power supply is moving towards the direction of high efficiency, low noise, and high power density. Face continuously changes application, SMPS technology continues to evolve, so that suitable for industry, medical, and high-end electronic devices for the strict requirement of a reliable and safe. Whether a 48V SMPS power supply or 320 watt power supply, an external power supply has become an indispensable key part in modern electronics.
