An auto-tuning digital control for buck-boost dc-dc converter

This paper presents two auto-tuning digital control methods for buck-boost dc-dc converter. The buck-boost dc-dc converter is used with wide input voltage changing. The suitable proportional gain and bias value are changing against the input voltage of the converter. So, we took two methods that changing proportional gain and changing bias value against the input voltage of the converter. As a result, the superior output characteristics can be realized.