ESD Detection via Coupling Circuit in Electronic Devices
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Solution Overview
Problem
Existing electrostatic discharge (ESD) detection techniques in electronic devices suffer from low accuracy, particularly with the ground bouncing method, which struggles to build a reliable prediction model.
Innovation Solution
An electronic device and method that utilize a coupling circuit with a third electronic component to compare electrical signals with a reference signal, determining ESD occurrence and controlling other components based on the comparison, thereby accurately detecting ESD and avoiding unnecessary resets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground bouncing technique is used for ESD detection, then ESD detection capability is provided, but detection accuracy deteriorates due to low accuracy and erroneous results
Solution Approach 1:
The patent introduces a coupling circuit as an intermediary element that couples the data line to a detection line. This coupling circuit acts as a mediator that transfers ESD signal characteristics from the data line to the detection line, enabling accurate ESD detection without directly monitoring the data line. The coupling circuit includes capacitive coupling elements that transfer voltage changes caused by ESD events while filtering out normal data signals.
Solution Approach 2:
The patent creates a copy of the ESD signal characteristics by using the coupling circuit to replicate voltage changes from the data line onto the detection line. The detection line becomes a copy that mirrors ESD events occurring on the data line, allowing the detection circuit to analyze ESD patterns without interfering with normal data transmission. This copying mechanism enables accurate detection while maintaining data line functionality.
2Reliability
If ground bouncing technique is used for ESD detection, then ESD detection is enabled, but prediction model reliability worsens due to difficulty in building suitable prediction model
Solution Approach 1:
The coupling circuit serves as an intermediary that simplifies the detection task by pre-processing ESD signals before they reach the detection circuit. The coupling circuit naturally filters and conditions the signals, reducing the complexity of the prediction model needed in the detection circuit. This intermediary structure transforms complex ESD detection into a simpler signal comparison task.
Solution Approach 2:
The coupling circuit performs self-service by automatically filtering out normal data signals and allowing only ESD-related voltage changes to pass through to the detection line. This self-filtering capability reduces the burden on the prediction model, as the circuit itself performs initial signal validation and preparation, making the detection process more straightforward and less complex.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables precise detection of ESD occurrences and rapid system recovery, improving the accuracy and reliability of ESD detection in electronic devices.
Implementation Method 1
a coupling circuit, that is, the second line electrically connecting the third electronic component and the first electronic component
Data Source
AI summary
Provided are an electronic device and control method therefor. The electronic device may include: a first electronic component; a second electronic component electrically connected to the first electronic component via a first line, where the second electronic component receives a data signal from the first electronic component via the first line; and a third electronic component electrically connected to the first electronic component via a second line and electrically connected to the second electronic component. At least a portion of the second line is substantially parallel to at least a portion of the first line. The third electronic component is configured to compare an electrical signal received via the second line to a reference signal and determine whether an electrostatic discharge (ESD) has occurred based on the comparison result, and the second electronic component is configured to control the first electronic component based on the determination result. Hence, it is possible to accurately detect ESD occurrence by using a coupling circuit and an electrical signal coupled with an electrical signal generated by ESD.