Power Noise Analysis in Semiconductor Devices
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Solution Overview
Problem
Accurate modeling and analysis of power noise in semiconductor devices is challenging due to the complex power transmission path and resistance in the power network, which can lead to voltage drops affecting device operation.
Innovation Solution
A method involving a computing device that models semiconductor devices as a power network and transistor model, generating analysis results through arithmetic operations on modified current information and power network matrices to analyze and mitigate power noise, allowing for design modifications to ensure stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power voltage is applied through a power network with resistance, then power can be distributed to semiconductor elements, but voltage drop occurs leading to power noise
Solution Approach 1:
The patent performs preliminary power noise analysis during the design phase by modeling the power network and transistors together. The analysis predicts voltage drops and power noise characteristics before fabrication, allowing designers to identify and correct potential reliability issues in advance through design modifications such as adjusting power network topology or transistor sizing.
Solution Approach 2:
The patent replaces physical measurement and testing of power noise with computational modeling and simulation. By using mathematical models to represent the power network and transistor interactions, the system can predict power noise characteristics without requiring actual hardware testing, enabling earlier and more iterative design optimization.
2Use of energy by moving object
If narrow voltage margins are used in semiconductor devices, then power consumption is reduced, but power noise analysis becomes more critical for ensuring operation
Solution Approach 1:
The patent implements an iterative feedback mechanism where the power noise analysis results are used to modify the design, and the modified design is re-analyzed. The process continues until the power noise characteristics satisfy the design requirements. This feedback loop ensures accurate power noise characterization even for devices with narrow voltage margins by continuously refining the design based on analysis results.
3Measurement precision
If detailed power network modeling is performed, then power noise analysis accuracy is improved, but computational complexity increases
Solution Approach 1:
The patent segments the power noise analysis into distinct phases: power network modeling, transistor modeling, and iterative coupling analysis. By dividing the complex analysis into manageable segments that can be performed separately and then integrated, the computational complexity is reduced while maintaining accuracy. Each segment can be optimized independently based on its specific requirements.
Data Source
AI summary
A method of analyzing power noise in a semiconductor device includes; generating modified current information by modifying present current information based on a previous analysis result, updating a current vector based on the modified current information, and generating a present analysis result by calculating a voltage vector from the updated current vector.