Interleaved Boost Converter Operating Near BCM with Improved Control Technique to a Reduce Current Ripple

The paper discusses design of the multiphase interleaved converter which operates near the boundary conduction mode in order to reduce costs and remove the current control loop in each phase. The paper presents the control principle of the multiphase DC-DC converter that reduces input and output current and voltage ripple. The principle is based on changing of number of active phases during the operation of the converter. The experimental results of six-phase interleaved converter prototype are presented in the paper and confirms possibility to reduce current ripples by utilizing proposed method.