A novel method of implementing real-time buck boost converter with improved transient response for low power applications

The need for regulated, non inverting, constant output voltage from a variable input is on the rise. In this paper, a novel intermediate digital combination mode control is introduced along with real time buck boost converter. So that the cost, efficiency, reduction in the ripple content and output voltage can be enhanced. In conventional control method of buck boost converter, a direct transition from buck to boost mode, produces unwanted spikes in the output voltage. Therefore, designing buck boost converter with improved transient response considerably reduces the spikes, which appear in the conventional output. While this method eliminates the direct buck boost mode operation, it introduces an intermediate combination mode consisting of several buck modes, followed by several boost modes. The introduction of intermediate combination mode results in improved efficiency and reduction in ripple content of the output voltage.