Optimalization of Buck-Boost converter for automotive

Cars are equipped with batteries whose voltage varies depending on their state of charge. We can cleverly use a buck-boost inverter to maintain a constant voltage for sensitive devices in the onboard network. This paper investigates the impact of changing the control algorithm on the efficiency of a full-bridge buck-boost converter using cheaper components, mainly mosfet transistor drivers. An inexpensive commercially available mosfet driver based on bootstrap technology can eliminate the need for long-term opening of the top transistor in the bridge converter. It also eliminates the need for an isolated auxiliary voltage source to power this driver. The work then results in a simulation verification of the assumptions on a model. Where we can confirm the correctness of the assumptions, with a tiny drop in efficiency (1-2%), we can save the cost, space, and, most importantly, the weight of the solution in the power scale of 20-200W. Price and weight reduction are essential factors in the automotive industry.