Semiconductor Temperature Control via Correction Signal
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Solution Overview
Problem
Semiconductor devices face challenges in accurately controlling temperature characteristics due to incorrect temperature detection by sensors, especially in stacked structures where heat from one chip is misinterpreted by sensors on adjacent chips, leading to inefficient refresh cycles and potential data loss.
Innovation Solution
A temperature control device is introduced, comprising a temperature reception circuit, a temperature correction circuit, and a temperature characteristics controller, which receives temperature signals from multiple chips and generates a correction temperature signal to adjust refresh cycles based on the highest temperature, ensuring accurate temperature characterization and frequent refresh operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature sensor is installed on each chip to detect temperature, then temperature detection capability is improved, but measurement precision deteriorates due to heat interference from adjacent chips
Solution Approach 1:
The patent introduces a temperature correction circuit as an intermediary component that receives temperature signals from multiple chips, identifies the highest temperature, and generates a corrected temperature signal. This mediator resolves the measurement interference by selecting the most accurate temperature reading among multiple sensors affected by thermal crosstalk.
Solution Approach 2:
The temperature correction circuit implements a feedback mechanism where temperature signals from all chips are continuously monitored, compared, and used to generate a corrected temperature signal that feeds back to the memory controller. This feedback loop ensures that temperature control decisions are based on the most reliable temperature data available.
2Productivity
If refresh cycles are extended to improve write speed, then productivity is improved, but reliability deteriorates due to charge loss from insufficient refresh operations
Solution Approach 1:
The patent implements dynamic refresh cycle adjustment where the refresh timing is adaptively changed based on real-time temperature conditions. When high temperature is detected, refresh cycles are shortened to prevent charge loss; when temperature is low, refresh cycles can be extended to improve write speed. This dynamic adaptation resolves the contradiction between productivity and reliability.
Data Source
AI summary
A temperature control device for controlling a temperature of a semiconductor device including a first chip and a second chip. The temperature control device may be configured to generate a correction temperature based on internal temperatures of the semiconductor device.