Doctoral Dissertations

Abstract

"Accurate modeling of power distribution networks (PDN) including voltage regulator module (VRM) is critical for high-performance digital systems including low- to high-power applications such as laptops and mobile platforms. As a consolidated end-to-end power source, PDN can be divided into several parts: the VRM to regulate the external voltage source, printed circuit board (PCB) PDN, package PDN, and on-chip PDN. A transient current drawn from the on-die circuitry will produce an instantaneous voltage drop at the bump. The time domain behavior of such a drop and the subsequent recovery is called voltage droop which is strongly associated with the VRM and PDN design Therefore, it is essential to include every component in the PDN from VRMs all the way to the on-die capacitors for accurate end-to-end power integrity (PI) simulation.

Herein, a VRM behavior modeling method to predict the time-domain voltage behavior is proposed. The method is applied to a practical multiphase VRM in a server and mobile platform, and successfully validated. In addition to the modeling of VRM, the power supply induced jitter (PSIJ) is simulated with the proposed VRM modeling methods. A printed circuit board (PCB) with an inverter chain powered by an external VRM is selected as the device under test (DUT). In the presence of power supply fluctuations due to load current injection on the VRM, the time interval error (TIE) of the inverter is measured. The measured peak-to-peak jitter is then reproduced by various simulation setups with the different VRM modeling methods. Finally, the PSIJ simulation accuracy is investigated with the different VRM modeling methods" -- Abstract, p. iv

Advisor(s)

Hwang, Chulsoon

Committee Member(s)

Fan, Jun, 1971-
Beetner, Daryl G.
Kim, DongHyun (Bill)
Song, ,Eakhwan

Department(s)

Electrical and Computer Engineering

Degree Name

Ph. D. in Electrical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Summer 2024

Pagination

xiv, 129 pages

Note about bibliography

Includes_bibliographical_references_(pages 40, 81 & 118-120)

Rights

©2024 Junho Joo , All Rights Reserved

Document Type

Dissertation - Open Access

File Type

text

Language

English

Thesis Number

T 12387

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