Transient Detection Circuit for ESD Event Reporting
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Solution Overview
Problem
Integrated circuits face challenges in detecting and reporting system-level electrostatic discharge (ESD) events effectively, which is crucial for reliability and electromagnetic compatibility, as existing on-chip ESD protection circuits are inadequate for system-level ESD issues.
Innovation Solution
A transient detection circuit comprising a detecting unit, a setting unit, and a memory unit is introduced, which provides an information signal to an external instrument when an ESD event occurs by coupling between power lines, using components like resistors, capacitors, and transistors to set node levels and control the information signal based on detection results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If on-chip ESD protection circuits are added to I/O cells and power cells, then component-level ESD reliability is improved, but system-level ESD testing capability deteriorates due to lack of detection information
Solution Approach 1:
A transient detection circuit is introduced as an intermediary component between the power lines and external instruments. This circuit includes a detecting unit coupled to power lines to sense ESD events, a setting unit to process detection results, and a memory unit to control information signal output. The intermediary circuit enables system-level ESD testing by providing detection information without interfering with the existing ESD protection circuits.
2Object-affected harmful factors
If ESD protection circuits are implemented, then ESD damage is reduced, but the ability to detect and report ESD events to external instruments deteriorates
Solution Approach 1:
The transient detection circuit performs self-service by autonomously detecting ESD events through its detecting unit, processing the detection results through the setting unit, and automatically controlling the information signal output through the memory unit. The circuit requires no external intervention to function, continuously monitoring power lines and reporting ESD events to external instruments via the information signal.
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
Enables immediate notification of ESD events to external instruments, enhancing system-level ESD test capabilities and improving the reliability of integrated circuits by accurately detecting and signaling ESD occurrences.
Implementation Method 1
The detecting unit is coupled between a first power line and a second power line for detecting the ESD event
Data Source
AI summary
A transient detection circuit including a detecting unit, a setting unit, and a memory unit. The transient detection circuit provides an information signal to an external instrument when an electrostatic discharge (ESD) event occurs. The detecting unit is coupled between a first power line and a second power line for detecting the ESD event. The setting unit sets a level of a first node according to the detection result. The memory unit controls the information signal according to the level of the first node. The information signal is at a first level when the ESD event occurs in the first power line.