A Review of Immediate Bus Architecture: A System Perspective

Three basic intermediate bus architectures are reviewed for electronic power distribution system and components developers from a system perspective. Salient features for each system are discussed in detail. They cover input power stage, bus voltage level, output power stage, output regulation, multiple outputs, thermal property, system stability, and output impedance. Design tradeoffs are also presented to guide practical designs. It is concluded that the double regulated intermediate bus architecture has the best efficiency, regulation, thermal, and stability performances. Engineering hardware achieved a record efficiency of 99%, validating the superiority of the double regulated intermediate bus architecture.