Performance enhancement with digital control technologies for dc-dc switching converters

In this paper, an overview of recent advances in digital control of low- to medium-power dc-dc switching converters is presented. Traditionally, analog electronics methods have dominated in controlling such dc-dc converters. However, with the steadily decreasing cost of ICs, the feasibility of digitally controlled dc-dc switching converters has increased significantly. This paper outlines a sample of digital solutions for dc-dc switching converters to enhance the performance of dc-dc switching converters. Furthermore, latest research activities pertaining to applications for steady-state and dynamic performance improvement, such as efficiency optimization, controller autotuning, and capacitor charge balance control, are discussed. These applications demonstrate the significant advantages and potentials of digital control.