ABSTRACT
In order to regulate the output voltage, a control feedback loop is required. Two control schemes are commonly used: voltage-mode control and current-mode control. This chapter covers the principle of operation of voltage-mode-controlled and current-mode-controlled regulators, and the characteristics of voltage-mode-controlled and current-mode-controlled regulators. It discusses the principle of operation and characteristics of current-controlled converters. The chapter also covers the design of feedback and compensation circuits for switching regulators, and the special design considerations for current-mode-controlled regulators. It also discusses the principle of operation, characteristics, and problems of current-controlled converters. The chapter discusses the implementation and the stability problem of current-controlled converters. It provides the principles of designing feedback and compensation circuits. In the design of current-mode-controlled regulators, special care should be taken to minimize the noise and interference in both the current feedback loop and the voltage feedback loop.
