Application of Magnetic Isolation Chip Technology in Output Voltage Error Feedback Circuits for Biotechnological Instrumentation and Precision Control

Yingjie Hao
Department of General Management Shanghai Jari Zhaoxin Information Science & Technology Co. Ltd, Shanghai 201306, China
Yi Wu
Department of Quality and Technology, Beijing Santel Technology &Trading Corp, Beijing 100854, China

Abstract:

Power supply design plays a critical role in biotechnology applications, where precision, stability, and reliability are essential, particularly in specialized fields such as biomedical devices, pharmaceutical manufacturing, and laboratory instrumentation. Conventional closed-loop control of switching power converters typically employs optocoupler-based isolation for output voltage feedback. However, optocouplers present challenges including low stability, reduced reliability, and higher operational costs, which can impede the performance and scalability of biotechnological equipment. To address these limitations, this study proposes a novel output voltage error feedback circuit leveraging magnetic isolation chip technology. By integrating the UC3842 magnetic isolation chip into the feedback circuit, the design eliminates the drawbacks associated with traditional optocoupler methods. The proposed magnetically isolated circuit enhances performance through improved signal stability, cost efficiency, and reliability, making it particularly suitable for high-precision biotechnological systems. This advancement holds significant potential for improving the operational efficiency and accuracy of commercial biotechnology instrumentation, contributing to broader applications in healthcare and life sciences industries.