The Switching Power Supply (SPS) utilizes high-frequency switching technology to achieve efficient power conversion, widely used in industries such as industrial automation, telecommunications, medical, consumer electronics, and automotive. Key features include high efficiency (80%-95%), compact size, and light weight, making it ideal for space-constrained applications. It also includes protection functions such as overcurrent, overvoltage, short circuit, and overtemperature. The input voltage range typically spans 85-265VAC or 9-36VDC, with output voltages available in 5V, 12V, 24V, 48V, etc., and power ranging from tens to thousands of watts. The SPS is widely applied in industrial automation, communication equipment, consumer electronics, medical devices, and electric vehicles.