Power Supply Event Counters for SSD Failure Analysis
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Solution Overview
Problem
Electronic devices, such as SSDs, face challenges in determining the cause of operation stops due to improper power supply generation, which is difficult to diagnose without specific counter mechanisms to track power supply issues.
Innovation Solution
Incorporating counters and a non-volatile memory within the electronic device to track the number of power supply stop events, voltage drops, and proper shutdowns, allowing for failure analysis and determination of the shutdown cause upon startup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple counters and non-volatile memory are added to track power supply events, then diagnostic capability is improved, but device complexity increases
Solution Approach 1:
The diagnostic function is segmented into multiple specialized counters (first counter for external power stop events, second counter for power generation stop events, third counter for voltage drop events) and a non-volatile memory for status information. Each counter independently tracks a specific aspect of power supply issues, allowing precise diagnostic capability without requiring a single complex monitoring system.
2Measurement precision
If counters track multiple power supply parameters simultaneously, then failure analysis accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically monitors and records power supply events through multiple counters and non-volatile memory without requiring manual intervention. The counters continuously track external power stop events, power generation stop events, and voltage drop events, providing automatic feedback on system status. This eliminates the need for manual diagnostics while maintaining high failure analysis accuracy.
3Reliability
If the electronic device monitors all power supply events continuously, then reliability is improved, but use of energy increases
Solution Approach 1:
The non-volatile memory stores status information indicating whether external power was properly stopped before a shutdown event occurs. This preliminary recording of power status allows the system to quickly determine the cause of shutdown without requiring continuous monitoring of all power parameters, reducing energy consumption while maintaining reliability.
Data Source
AI summary
An electronic device includes a power supply circuit, a first counter that counts the number of times that supply of external power to the power supply circuit is stopped, a second counter that is operated by a first power and counts the number of times that generation of the plurality of kinds of power is stopped, a third counter counting the number of times that any of the plurality of kinds of power is dropped to a predetermined voltage or less, a non-volatile first memory storing status information indicating whether or not supply of the external power to the power supply circuit is properly stopped, and a fourth counter that counts the number of times that the supply of the external power to the power supply circuit is properly stopped and the number of times that the supply of the external power to the power supply circuit is abnormally stopped.