Current-fed multiple-output power conversion

TLDR: In this article, a switch-mode current source feeding interleaved switched capacitor outputs is presented. And a novel control scheme involving closed-loop control of the switching frequency to maintain the optimal source current is presented, which is particularly applicable to both isolated and nonisolated conversion to multiple independently regulated low voltage outputs.

Abstract: This paper focuses on low cost and low component count, multiple-output power conversion. The work is particularly applicable to both isolated and nonisolated conversion to multiple independently regulated low voltage outputs. The topology employed is a switch-mode current source feeding interleaved switched capacitor outputs. Several advances are presented. The output switches for the topology are implemented with two types of silicon for unidirectional current how. Firstly, with newly available power trench JFETs and then with proposed new "body-diode-less" N-channel MOSFETs. These have their internal body (base) regions separated from their source regions. A novel control scheme involving closed-loop control of the switching frequency to maintain the optimal source current is presented.