SSD Power Pin Detection for Host Compatibility
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Solution Overview
Problem
High-performance SSDs requiring high power consumption can cause over-current issues when mistakenly connected to hosts with insufficient power supply, leading to potential malfunctions and difficulties in diagnosing the cause of malfunctions due to unexpected power oversupply and voltage drops.
Innovation Solution
The SSD checks if a specific pin (PL) is connected to ground, indicating the host's power supply capability, and adjusts its power consumption accordingly, restricting it to the maximum power the host can supply, thereby preventing over-current issues and ensuring stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-performance SSDs with high power consumption are connected to hosts, then storage performance and capacity are improved, but over-current issues and system instability occur when the host cannot supply sufficient power
Solution Approach 1:
The SSD performs preliminary detection of the host's power supply capability by checking the PL pin state before initiating full-power operation. This preliminary action allows the SSD to adjust its power consumption expectations and operational mode in advance, preventing over-current issues before they occur.
Solution Approach 2:
The system establishes a feedback mechanism where the SSD continuously monitors the PL pin state to detect changes in the host's power supply capability. Based on this feedback, the SSD dynamically adjusts its power consumption and operational parameters, ensuring reliable operation within the host's power limits.
2Productivity
If the SSD operates at high power consumption without detecting host capability, then performance is maximized, but unexpected voltage drops and malfunctions occur
Solution Approach 1:
The SSD performs preliminary detection of the host's power supply capability by checking the PL pin state before initiating full-power operation. This preliminary action allows the SSD to adjust its power consumption expectations and operational mode in advance, preventing over-current issues before they occur.
Solution Approach 2:
The system establishes a feedback mechanism where the SSD continuously monitors the PL pin state to detect changes in the host's power supply capability. Based on this feedback, the SSD dynamically adjusts its power consumption and operational parameters, ensuring reliable operation within the host's power limits.
3Speed
If the host supplies maximum power to the SSD, then storage operations are performed at full speed, but the system becomes vulnerable to power insufficiency and diagnostic difficulties
Solution Approach 1:
The system establishes a feedback mechanism where the SSD continuously monitors the PL pin state to detect changes in the host's power supply capability. Based on this feedback, the SSD dynamically adjusts its power consumption and operational parameters, ensuring reliable operation within the host's power limits.
Solution Approach 2:
The SSD performs preliminary detection of the host's power supply capability by checking the PL pin state before initiating full-power operation. This preliminary action allows the SSD to adjust its power consumption expectations and operational mode in advance, preventing over-current issues before they occur.
Data Source
AI summary
According to one embodiment, an information processing apparatus includes a connector to which a storage device is connectable. The apparatus includes a power supply circuit which supplies power to the storage device via one or more power pins of the connector. The first pin of the connector is set to a first electric potential or an open state based on a power supply capability of the power supply circuit. A state of the first pin which is set to the first electric potential indicates that a maximum power supplied from the power supply circuit to the storage device via the one or more power pins of the connector is a first power. A state of the first pin which is set to the open state indicates that the maximum power is a second power.