Diseño de un convertidor DC/DC híbrido integrado (Design of an On-Chip Hybrid DC/DC Converter)

Jordi Cosp Vilella (jordi.cosp@upc.edu)1, Herminio Martínez García (herminio.martinez@upc.edu)1


1Universitat Politècnica de Catalunya

This paper appears in: Revista IEEE América Latina

Publication Date: July 2015
Volume: 13,   Issue: 7 
ISSN: 1548-0992


Abstract:
This paper presents the design of a hybrid on-chip VLSI DC/DC converter for low to medium integrated circuit power consumption that combines a switching and a linear regulator in parallel. The main goal is to take the best of both approaches, obtaining good power efficiency as in switching DC/DC converters, with small voltage output ripple as in linear converters. While the switching regulator is used to drive most of the load current, the linear regulator supplies the required current to filter out the steady state ripple due to inductor switching without the need of a filtering output capacitor. In addition, the second regulator supplies the required current when the load changes abruptly and the inductor current is momentarily insufficient. The design has been tested with simulations using a standard 180-nm CMOS technology showing good performance.

Index Terms:
DC/DC converter, hybrid regulator, CMOS, VLSI design, power electronics, first-generation current conveyor (CCI)   


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