Peak Current Control Boost Converter with Time-Multiplex

Abstract

A single-inductor dual output boost converter behavioral model was designed using a 180nm CMOS technology and VerilogA. The converter adopts time-multiplexing control by providing independent supply voltages (3.0V and 4.0V) and adjustable peak current for dual output system loads including battery charging. The converter was analyzed and compared to existing architectures presented in literature in the aspects of power path and control scheme. The proposed topology and control loop can be extended to include additional outputs. Implementation of the power stage, controller, and functional blocks are discussed.