The development trend of switching power supply technology

The development direction of switching power supply is high frequency, high reliability, low consumption, low noise, anti-interference and modularization. Since the key technology of switching power supply is high-frequency, the major switching power supply manufacturers abroad are committed to the synchronous development of new intelligent components, especially the loss of the variable secondary rectifier device, and increase scientific and technological innovation in the power ferrite (Mn.Zn) material, in order to improve the high magnetic properties under the high frequency and large flux density (Bs). The miniaturization of capacitors is also a key technology.

The application of SMT technology has made great progress in the switching power supply, the two sides of the circuit board cloth star, components to ensure that the switch light, small, thin. The high frequency switching power supply is bound to innovate the traditional PWM switching technology. The switching technology of ZVS and ZCS has become the mainstream technology of switching power supply. And it greatly improve the switching power supply efficiency. As for the reliability index, switching power supply manufacturers in the United States have greatly improved switching reliability by reducing the stress of the device by reducing the operating current and temperature.

Modularity is the overall trend of the development of switching power supply, which can adopt the modular power bank distributed battery source system,  can be designed as the N+I hyperactive surplus power system, and realize the capacity expansion of contact mode. And the use of partial harmonic plate conversion circuit technology, in theory can realize high-frequency and reduce the noise, but the partial resonance conversion circuit technology, in theory can realize high-frequency and reduce the noise, but the practical application of partial resonance conversion technology still has technical application problems, so it is still necessary to achieve both high frequency and reduce noise in theory. However, the practical application of partial resonance conversion technology still has technical problems, so a lot of work in this field is still needed to make the technology application.