A novel peak and deep current mode control for two switches buck-boost converter

A simple current mode controller is proposed for two switches buck-boost converter which performs conversion with lower stresses than the single switch types. In this approach problem of interference between buck and boost switches operations are solved by determining four operation modes for the converter. The experimental results on an 110 V, 40 KW converter show the ability of the proposed control method. The line and load regulation in different situation is below than 0.9%.