Multi-Level Power Converter With Additional Fly Capacitor

A power converter circuit that includes two flying capacitors, is coupled to a regulated power supply node in a computer system. The power converter circuit magnetizes an inductor using the two flying capacitors during a first phase. During a second phase, the power converter circuit charges one of the flying capacitors, de-magnetizes the inductor, and transfers charge to the regulated power supply node. The power converter circuit magnetizes the inductor using the flying capacitors, and transfers charge to the regulated power supply node during a third phase. During a fourth phase, the power converter circuit again de-magnetizes the inductor, charges the one of the flying capacitors, and transfers charge to the regulated power supply node.