Voltage regulators, such as the buck-boost converter, use feed-forward or negative feedback designs and can incorporate either electromechanical mechanisms or electronic components. With the capability to both step up and step down voltage, these buck and boost converters are critical in maintaining consistent power levels. Popular options include the LM2596 buck converter and the MT3608 boost converter, which serve as reliable voltage boosters and step-up converters for a wide range of applications.