Electronic Component Aging Prediction From Signal Waveforms
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Solution Overview
Problem
Current reliability monitoring methods for electronic components and circuits are imprecise, as they fail to accurately predict future degradation due to not accounting for actual stress conditions, leading to overestimation or underestimation of circuit degradation, and do not allow for preventive measures to extend the lifespan or prevent failure.
Innovation Solution
An apparatus and method that measure the waveform of signals related to electronic components or circuits, using a reliability model to calculate predicted characteristics, such as threshold voltage or transconductance, allowing for the prediction of future states and enabling adjustments to operation parameters like supply voltage to extend lifespan or enhance performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If replica circuits are used to monitor reliability, then the monitoring coverage is improved, but the measurement precision deteriorates due to imprecise degradation prediction
Solution Approach 1:
The patent uses a replica circuit that copies the physical structure and aging behavior of the actual electronic circuit. This replica serves as a predictive model that simulates future degradation states under various stress conditions, allowing accurate prediction without directly interfering with the actual circuit operation.
Solution Approach 2:
The system performs preliminary aging tests on the replica circuit under accelerated stress conditions before the actual circuit fails. This allows prediction of future degradation states and enables preventive measures to be taken before actual circuit failure occurs.
2Measurement precision
If timing based monitors are used for digital circuits, then the measurement capability is improved, but the adaptability deteriorates since they cannot be used for analog circuitry
Solution Approach 1:
The patent creates a universal monitoring system that can predict degradation for both digital and analog circuits using the same replica circuit approach. The system measures various electrical parameters (current, voltage, frequency) that are applicable to different circuit types, making the monitoring method versatile across different electronic circuit architectures.
3Productivity
If supply voltage exceeds nominal level for optimum performance, then the productivity is improved, but the reliability deteriorates due to reduced component lifetime
Solution Approach 1:
The system dynamically adjusts operating parameters based on predicted degradation states. It can optimize performance by allowing higher supply voltages when the circuit is young and reliable, then gradually reducing voltage as degradation is predicted, thereby balancing performance and lifetime throughout the component's operational life.
Solution Approach 2:
The patent implements a feedback mechanism where the replica circuit's predicted degradation state is continuously monitored and used to adjust the actual circuit's operating parameters. This closed-loop control allows the system to adapt performance and reliability trade-offs based on real-time aging predictions.
Data Source
AI summary
An apparatus for predicting a future state of an electronic component is provided. The apparatus includes a measuring unit configured to measure a waveform of a signal related to the electronic component. Further, the apparatus includes a processing unit configured to calculate a predicted value of a characteristic of the electronic component based on a reliability model of the electronic component using the waveform of the signal.