The development direction of DC switching power supplies is towards high frequency, high reliability, low power consumption, low noise, anti-interference, and modularity. Due to the key technology of DC switching power supplies being lightweight, compact, and thin, foreign manufacturers of DC switching power supplies are all committed to the simultaneous development of new high-intelligent components, particularly improving the loss of secondary rectifying devices. They are also focusing on technological innovation in power ferrite (Mn-Zn) materials to enhance magnetic properties at high frequencies and larger magnetic flux densities (Bs). The miniaturization of capacitors is also a key technology.
High-frequency technology has miniaturized DC switching power supplies, bringing 28V DC switching power supplies into broader application fields, particularly in high-tech industries, facilitating the miniaturization and portability of high-tech products. Additionally, the development and application of DC switching power supplies are significant in energy conservation, resource conservation, and environmental protection. The application of SMT technology has led to substantial advancements in DC switching power supplies, with components placed on both sides of the circuit board to ensure their lightweight, compact, and thin design. The high-frequency technology of DC switching power supplies necessitates innovation in traditional PWM switching technology, with Zero Voltage Switching (ZVS) and Zero Current Switching (ZCS) soft-switching techniques becoming mainstream, significantly enhancing the efficiency of DC switching power supplies. Modularization is the overall trend in the development of DC switching power supplies, allowing for the composition of distributed power systems using modular power supplies. These can be designed as N+1 redundant power systems and can be expanded in parallel capacity. 36V aviation power supply, 400HZ frequency conversion power supply, 115/200V power supply, 27V DC power supply, 400HZ power supply, aviation power supply
Addressing the drawback of high operation noise in DC switching power supplies, if we solely pursue high-frequencyization, the noise will inevitably increase as well. However, by employing partial resonance conversion circuit technology, it is theoretically possible to achieve both high-frequencyization and noise reduction. Yet, practical application of this partial resonance conversion technology still faces technical challenges, and therefore, extensive work in this field is necessary to make this technology practical. Therefore, to excel in DC power supply production, a spirit of craftsmanship, persistence, and continuous innovation is essential, resulting in top-notch products.
