Driving System IC Continuity Test Unit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing driving-related systems face challenges in ensuring the integrity and reliability of electrical connections between integrated circuits (ICs) and printed circuit boards (PCBs) under mechanical, electrical, and thermal stress, which can impact safety and functionality over the lifespan of the system.
Innovation Solution
A driving-related system that includes an integrated circuit (IC) with a test unit to electrically test the continuity of conductive paths formed by intermediate conductors, such as solder balls, between the IC and PCB, generating fault indications and enabling safety measures in response to discontinuities, including resetting components or controlling vehicle operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surface mounting technology with solder balls is used to electrically couple IC to PCB, then electrical connection is achieved, but connection integrity deteriorates under mechanical, electrical, and thermal stress
Solution Approach 1:
The patent applies preliminary action by incorporating a self-test function within the IC that proactively monitors the integrity of solder ball connections before they fail completely. The test unit continuously checks electrical continuity through the intermediate conductors (solder balls), detecting potential issues early in the stress exposure sequence, allowing preventive measures to be taken before connection failure occurs.
Solution Approach 2:
The patent implements feedback by creating a closed-loop monitoring system where the test unit measures the electrical continuity of solder ball connections and feeds this information back to the control unit. When discontinuity or degradation is detected, the system responds by triggering safety measures or alerting operators, enabling real-time adjustment and maintenance decisions based on actual connection status rather than waiting for failure.
2Reliability
If continuous monitoring of conductive path integrity is implemented, then system reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges the monitoring function with the existing IC by integrating a test unit directly into the IC structure. This combination eliminates the need for separate external monitoring equipment, as the IC itself performs the continuity testing through its internal circuitry. The test unit shares the IC's power supply, processing resources, and output interfaces, thereby reducing overall system complexity while maintaining continuous monitoring capability.
Solution Approach 2:
The patent applies self-service by enabling the IC to monitor its own connection integrity through an internal test unit. The IC uses its own electrical conductors and test circuitry to assess the continuity of intermediate conductors (solder balls) without requiring external testing equipment. This self-diagnostic capability reduces system complexity by eliminating separate monitoring subsystems while ensuring continuous reliability assessment.
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 system ensures continuous operation and safety by detecting and responding to electrical discontinuities, thereby maintaining system integrity and reliability under stress conditions.
Implementation Method 1
electrically test a continuity of a first conductive path that comprises a first group of intermediate conductors, a first group of IC conductors, and a first group of PCB conductors
Data Source
AI summary
A driving related system that may include an integrated circuit (IC) that may include IC conductors and test unit; a PCB that may include PCB conductors; intermediate conductors for coupling the IC conductors to the PCB conductors; wherein the test unit is configured to: electrically test a continuity of a first conductive path that comprises a first group of intermediate conductors, a first group of IC conductors and a first group of PCB conductors; and generate a continuity fault indication when detecting a discontinuity of the first conductive path; and wherein the driving related system is configured to perform a safety measure, in response to a generation of one or more continuity fault indications.