Per-Die Temperature Programming for IC Clock Frequency Control
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Solution Overview
Problem
As integrated circuit (IC) fabrication advances, increased components on a single chip generate more heat, risking damage through thermal expansion and limiting device usage, with current solutions like lowering clock frequency resulting in lower performance.
Innovation Solution
Implementing per die temperature programming to determine and manage junction temperature, allowing for efficient operation by adjusting clock frequency based on individual IC component temperatures, enabling both low-power consumption and improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional components are integrated onto a single IC chip to improve functionality, then device capability is enhanced, but heat generation increases causing thermal damage and limiting usage
Solution Approach 1:
The patent segments the IC chip into multiple dies, where each die can be independently temperature-monitored and frequency-adjusted. This allows different regions of the chip to operate at different frequencies based on their individual thermal conditions, enabling higher overall functionality while managing heat generation on a per-die basis rather than forcing the entire chip to operate at a reduced frequency.
Solution Approach 2:
The patent implements local temperature monitoring and frequency control for each die within the IC chip. Each die can have its clock frequency independently adjusted based on its own junction temperature, allowing regions with lower heat generation to operate at higher frequencies while regions with higher heat generation operate at lower frequencies, thus maintaining overall device capability while preventing thermal damage.
2Temperature
If clock frequency is lowered to generate less heat and prevent thermal damage, then temperature control is improved, but performance decreases
Solution Approach 1:
The patent implements dynamic frequency adjustment for each die based on real-time temperature monitoring. Rather than using a static, conservative frequency setting for the entire chip, the system continuously monitors junction temperature and adjusts the clock frequency dynamically, allowing each die to operate at the highest possible frequency that maintains safe thermal conditions, thus preventing performance loss while ensuring temperature control.
Solution Approach 2:
The patent changes the operating parameters (clock frequency) of each die based on its thermal state. By monitoring junction temperature and adjusting frequency accordingly, the system allows dies to operate at higher frequencies when thermal conditions permit, rather than being constrained by a uniform low frequency setting, thereby maintaining performance while achieving temperature control.
3Loss of energy
If per die temperature programming is implemented to manage junction temperature, then thermal efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service temperature management where each die monitors its own junction temperature and autonomously adjusts its own clock frequency based on predefined temperature thresholds. This distributed self-regulation approach improves thermal efficiency without requiring complex centralized control logic, as each die independently manages its own thermal conditions through simple temperature-frequency mapping.
Solution Approach 2:
The patent employs feedback mechanisms where temperature sensors on each die continuously monitor junction temperature and feed this information back to frequency control logic. This feedback loop allows automatic adjustment of clock frequency in response to thermal conditions, improving thermal efficiency through dynamic control while keeping the control complexity manageable through standardized feedback architectures.
Data Source
AI summary
Methods and apparatus to provide per die temperature programming for thermally efficient integrated circuit (IC) operation are described. In some embodiments, the junction temperature of an IC component is determined, e.g., to reduce power consumption and/or improve performance. Other embodiments are also described.