Digital Voltage-mode Control Of Higher Order Boost Converter

Abstract

In this paper analysis and digital controller design for digital voltage-mode controlled higher order boost converter (HOBC) is presented. The state-space averaging method is applied to formulate the small-signal models; valid up-to half of the switching frequency, of the converter and a loop gain is adapted to design the voltage-mode discrete compensator. Closed-loop performance of the HOBC is analyzed. The results of controller design and closed-loop analysis are illustrated through computer simulations for 48 V applications. In this paper analysis and digital controller design for digital voltage-mode controlled HOBC is presented. The state-space averaging method is applied to formulate the small-signal models, valid up-to half of the switching frequency, of the converter and a loop gain is adapted to design the voltage-mode discrete compensator. Closed-loop performance of the HOBC is analyzed. The results of controller design and closed-loop analysis are illustrated through computer simulations for 48 V applications.