Investigation of Inductor-based Fully On-chip Boost Converter

Robert, Ondica,; Arbet, Daniel; Kovac, Martin; Stopjaková, Viera

doi:10.23919/mixdes52406.2021.9497548

Cited by 1 publication

(1 citation statement)

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“…However, the current crowding effect becomes significant as the frequency increases to more than 1GHz. In addition, the inductor current resonates with the lossy substrate, generating eddy currents due to electromagnetic coupling to the substrate [61]. Particularly in the scaled CMOS process, the top metal is closer to the substrate incurring extra loss, thereby exacerbating the Q-factor and channel effect [62].…”

Section: Integration Of Inductor and Optimizationmentioning

confidence: 99%

Design and Implementation of Hybrid DC-DC Converter: A Review

et al. 2023

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The advancement in Power Management Integrated Circuit (PMIC) has driven the DC-DC conversion technology into a System-on-Chip (SoC) solutions, leveraging CMOS technology scaling from 180nm to 22nm and on-chip passive element integration. Concurrently, as the applications demand smaller form factor solution towards device portability with optimized power qualities, switched-capacitor-inductor hybrid architectures with fully-integrated passives have become a popular choice for a compact and high efficiency converter solution, in contrast to bulky and discrete component based alternatives. This article reviews the latest advancements in hybrid dc-dc topologies, specifically for low-power applications to address the downsides such as charge sharing loss, high current ripple, limited conversion ratio, low power density and efficiency. An overview of capacitor and inductor technology is discussed in terms of on-chip parasitic losses, and miniaturization. A comprehensive comparison in the state-of-the-art hybrid dc-dc converter work is tabulated with power density and efficiency as the primary performance metrics, highlighting their operability in low-power applications. Moreover, a discussion is included with quantified benchmarks to justify the viability of converters, along with the future recommendation of realizing ultra-high switching frequency for smaller footprint inductor and design approach to resolve the current tradeoff bottlenecks.

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Section: Integration Of Inductor and Optimizationmentioning

confidence: 99%