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10. Modelling and design of microinductors for power supply on chip applications

Author

Feeney, Ciaran, Duffy, Maeve, and National University of Ireland, Galway Fellowship Fund

Subjects
PwrSoC Thin Film Inductor, Electrical & Electronic Engineering, DC-DC converters, Inductors, Modelling
Abstract

The never-ending pursuit of higher power density and efficiency has driven researchers to explore new areas of device integration and fabrication of dc-dc converters. To improve power density and efficiency researchers are developing novel components and packaging technologies, with the ultimate goal of integrating active and passive components together to realise a heterogeneous Power Supply on Chip (PwrSoC). The main roadblock to achieving a fully integrated power supply on chip is an efficient, miniaturised inductive filter element. Microinductors are limited by a number of the factors including device structure, core materials and fabrication process constraints. Within these limits, however, lie significant opportunities to improve and advance research towards the holy grail of an efficient PwrSoC. This thesis contributes to the development of PwrSoC, a robust analytical analysis of uncoupled racetrack and coupled stripline microinductors, from the design stage through to their performance in prototype dc-dc converters. There is a particular focus on the distribution of microinductors to realise a highly granular power supply, leading to improved system level performance.

Published
2015

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