Title

Modeling of Power Supply Noise Associated with Package Parasitics in an On-Chip LDO Regulator

Abstract

In this paper, the power supply noise associated with package parasitics in an on-chip low-dropout (LDO) regulator is investigated. The on-chip LDO regulator with off-chip decoupling capacitors has power supply rail noise typically in the frequency range of few hundreds of MHz, which is related to the inductive package interconnects and the parasitic capacitance of the pass transistor. An equivalent circuit is proposed to model the power supply noise and understand the effect of inductive package interconnects. Based on the proposed equivalent circuit, the mitigation of the power supply noise from a package design perspective is discussed.

Meeting Name

2021 IEEE International Joint Electromagnetic Compatibility Signal and Power Integrity and EMC Europe Symposium, EMC/SI/PI/EMC Europe 2021 (2021: Jul. 26-Aug. 13, Raleigh, NC)

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Comments

This work was supported in part by the National Science Foundation (NSF) under Grant IIP-1916535.

Keywords and Phrases

Inductive Interconnects; LDO Regulator; Power Distribution Network (PDN) Design; Power Supply Noise

International Standard Book Number (ISBN)

978-166544888-8

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2021 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

13 Aug 2021

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