On 15 September 2026, the utility model patent for ‘A Constant-Voltage DC Converter Switching Power Supply with a SEPIC Circuit’, independently researched, developed and designed by Hengfu Power, was granted by the National Intellectual Property Administration. The patent application was filed on 23 June 2025 and represents a major achievement resulting from Hengfu’s deep commitment to core switching power supply technologies and its dedication to independent research, development and innovation. The patent utilises a SEPIC circuit architecture to enable step-up and step-down conversion, maintaining a stable constant-voltage output even under conditions of significant input voltage fluctuations. It broadens the voltage compatibility range, enhances interference resistance, and is suitable for complex power supply scenarios such as industrial automation and industrial control equipment.

With over thirty years’ experience in the switching power supply industry, Hengfu remains committed to R&D-driven growth, continuously securing proprietary patents and driving the integration of technology into products, thereby establishing a comprehensive system for technology commercialisation. This patent represents a significant breakthrough in Hengfu’s circuit innovation and further strengthens the company’s core competitiveness. Hengfu will continue to increase its investment in R&D, utilising original technologies to refine high-performance industrial power supplies and support the localisation and upgrading of the manufacturing sector.