A Buck-Boost Converter is a system that automatically maintains a constant voltage level. It includes (Step-Down) Buck converters and (Step-Up) Boost converters. These voltage regulators ensure stable voltage output from a power source. Commonly found in computer power supplies, they stabilize DC voltages used by processors and other components.

Voltage regulators, including buck-boost voltage regulators, utilize simple feed-forward or negative feedback designs. They can incorporate electromechanical mechanisms or electronic components. With the ability to step up or step down voltage, these regulators play a vital role in maintaining consistent power levels.