Multi-phase distributed-output power converters

Abstract

A distributed-output multi-cell power converter utilizes a multiplicity of magnetic core elements, switching elements, and terminal connections in a step and repeat pattern. Stepped secondary-winding elements reduce converter output resistance and improve converter efficiency and scalability to support the high current requirements of very large scale integrated ('VLSI') circuits. The multi-cell power converter can use two-phase cells with three or five core legs, or three-phase cells with four or seven core legs. Some examples of the multi-cell converter include integrated secondary-side switching devices having control circuitry that monitors circuit conditions to determine when the switching device is to be ON and OFF, thereby eliminating the need for secondary-side switch control signals and signal buses, primary-to-secondary interface circuitry and centralized drive circuitry.