SSD Thermal Frequency Control for Stable High-Temperature Access
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Solution Overview
Problem
Solid state drives (SSDs) are unstable under high temperature conditions, leading to increased errors in data writing and reading, as their current designs do not effectively manage temperature fluctuations within the operational range of −40° C. to +85° C.
Innovation Solution
A controlling method for SSDs that includes a temperature detecting circuit and a controlling circuit, which divides dies into groups and adjusts clock signal frequencies, operating frequencies, or introduces time delays between command cycles to manage temperature, thereby reducing heat generation and maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the solid state drive operates at high temperature, then the accessing speed and storage capacity are improved, but the operating stability deteriorates and error rates increase
Solution Approach 1:
The patent dynamically adjusts the operating frequency of the solid state drive based on temperature conditions. When temperature exceeds a threshold, the system automatically reduces the operating frequency to lower heat generation, thereby maintaining operational stability while preserving acceptable performance under varying thermal conditions.
Solution Approach 2:
The system changes operational parameters (frequency, timing) in response to temperature variations. By monitoring temperature and adjusting the frequency parameter downward when thresholds are exceeded, the patent resolves the contradiction between maintaining high speed and ensuring stability under thermal stress.
2Productivity
If the operating frequency is increased to improve accessing speed, then the productivity is improved, but the temperature increases and stability deteriorates
Solution Approach 1:
The patent implements periodic temperature monitoring and conditional frequency adjustment. The system operates at high frequency for productivity when temperature permits, but periodically checks temperature and reduces frequency when thresholds are exceeded, creating a dynamic balance between productivity and thermal management.
Solution Approach 2:
The operating frequency is made dynamic rather than fixed, allowing the system to adapt between high-performance mode (when cool) and thermal-management mode (when hot), thereby resolving the contradiction between productivity and temperature control.
3Temperature
If the frequency of clock signals is decreased to reduce temperature, then the temperature is reduced and stability is improved, but the accessing speed deteriorates
Solution Approach 1:
The patent makes the clock signal frequency dynamic, adjusting it based on real-time temperature conditions. The system maintains high frequency for speed when temperature is acceptable, but automatically reduces frequency when temperature exceeds thresholds, thereby resolving the contradiction between temperature control and speed maintenance through adaptive behavior.
Data Source
AI summary
A controlling method is provided for preventing a solid state drive from being operated at a high temperature. The solid state drive includes a controlling circuit, a temperature detecting circuit and a plurality of dies. The dies are divided into n groups and accessed by the controlling circuit through n IO buses. The controlling circuit is in communication with the temperature detecting circuit for detecting a temperature of the solid state drive. The controlling method includes the following steps. Firstly, a judging step is performed to judge whether the temperature of the solid state drive is higher than a predetermined temperature. If the temperature of the solid state drive is higher than the predetermined temperature, the frequencies of n clock signals in the n IO buses are decreased.