Power supply circuit with shared functionality and method for operating the power supply circuit

A power supply circuit and a method for operating the power supply circuit are described. In one embodiment, a power supply circuit includes at least one input terminal to receive at least one input voltage, a power element including multiple power element components configured to convert the at least one input voltage to at least one output voltage, multiple regulator controllers configured to control the power element components for the conversion of the at least one input voltage to the at least one output voltage, at least one first switch coupled to the regulator controllers and the power element components, and multiple output terminals to output the at least one output voltage. The at least one first switch is used to configure the power supply circuit to function as either one voltage regulator or multiple independent voltage regulators. Other embodiments are also described.