Switched Inductor and Capacitor Techniques for Efficient Power Conversion

Power conversion systems are essential for efficient energy utilization in modern electrical and electronic systems. Among the various topologies available, the switched inductor (SI) and switched capacitor (SC) methods have become more popular because of their capacity to enhance voltage gain without requiring high transformer turn ratios. This paper presents an overview of SI and SC converters, along with various topologies and their performance. The Switched Inductor (SI) topology utilizes one or more inductors in a switching network to store energy in magnetic fields and release it during off periods, resulting in a boost or buck-boost voltage conversion. This technique offers high voltage gain and flexibility in managing power conversion. On the other hand, the Switched Capacitor (SC) topology transfers energy between capacitors through a controlled switching process, achieving efficient step-up or step-down voltage conversion. This paper explores their performance metrics, such as voltage gain, efficiency, and component stress. These topologies are vital to modern power conversion systems, offering high efficiency and reliability across a range of applications.