Publication:
Design of single-inductor multiple-output converter for low power & high efficiency applications

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Authors
Malavé-Pérez, Luis A.
Embargoed Until
Advisor
Serrano, Guillermo
College
College of Engineering
Department
Department of Electrical and Computer Engineering
Degree Level
M.S.
Publisher
Date
2015
Abstract
This work presents a control architecture for Single Inductor Multiple Output (SIMO) converters applied to low power applications. A functional Power Management Integrated Circuit (PMIC) was designed, simulated, and fabricated, using a 0.8?m BiCMOS technology, to provide three totally independent output voltages by using only one external inductor. The proposed hybrid operation mode, along with the stable non-invasive inductor current controller, allows the system to achieve high efficiencies even under low load conditions. The system’s architecture exhibits maximum efficiency of 85% with nominal loads of 25?A, 25?A, and 10?A; with less than 1?A of controller current consumption.

Este trabajo presenta una arquitectura de control para convertidores “Single Inductor Multiple Output” (SIMO) aplicada a aplicaciones de baja potencia. Se diseñó, simuló, y probó experimentalmente un Circuito Integrado de Manejo de Potencia (PMIC por sus siglas en inglés) usando una tecnología BiCMOS de 0.8?m, para proveer tres voltajes de salida totalmente independientes mediante el uso de un solo inductor externo. Bajo condiciones nominales, se alcanzó una eficiencia de 85% mediante la implementación de un controlador que consume menos de 1?A durante su estado inactivo. El modo híbrido de operación, junto con el controlador estable de corriente de inductor, permite al sistema alcanzar altas eficiencias aún bajo condiciones de baja potencia.
Keywords
Low power,
high efficiency applications,
converter
Cite
Malavé-Pérez, L. A. (2015). Design of single-inductor multiple-output converter for low power & high efficiency applications [Thesis]. Retrieved from https://hdl.handle.net/20.500.11801/2183