Runtime Control and Optimization Techniques for SoC Power Management
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Author(s)
Huang, Chi-Hsiang
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Abstract
Modern System on Chips (SoCs) are ubiquitous, found in almost every corner of our daily life, ranging from mobile phones to data centers. High performance with low power consumption stands as one of the most important considerations in the design of SoCs. Unfortunately, the advantages of technology scaling have begun to plateau in recent years. Consequently, innovative circuit design, system design, and power management techniques are crucial for ensuring the high energy efficiency of SoCs. Granular Vdd control and aggressive duty-cycling are gaining attention in modern SoCs to achieve high energy efficiency. Concurrently, Integrated Voltage Regulators (IVRs) are essential to meet Power Delivery Network (PDN) constraints while minimizing both the Bill of Materials (BoM) and the form factor.
In this dissertation, the energy inefficiencies of multi-Vdd domain systems powered by single-inductor-multiple-output (SIMO) converters and duty-cycled systems are identified from a system-level perspective, considering both power converters and digital loads. This dissertation comprises three works, each proposing power management techniques to enhance the energy efficiency of either multi-Vdd domain SoCs, duty-cycled SoCs, or both, while meeting PDN constraints and minimizing the BoM.
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2024-03-13
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Dissertation