Integrated Circuit Performance Tuning via Localized Power Control
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Solution Overview
Problem
Existing systems for controlling integrated circuit performance in deep submicron technologies face challenges due to excessive transistor leakage, local and global process variability, and reduced noise margins, leading to complex and bulky circuitry with high area overhead.
Innovation Solution
A simple adaptive control scheme using variable resistors for independent power supply adjustment in electrically isolated regions of an integrated circuit, with a decentralized monitoring system that includes power-supply-noise monitors and clock comparators, and a finite state machine for digital control, allowing for low area overhead and fast transient response without additional external components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional performance control schemes are implemented in deep submicron technologies, then system performance can be regulated in real-time, but the circuitry becomes complex and bulky with high area overhead
Solution Approach 1:
The integrated circuit is divided into electrically isolated regions or islands, each with independent performance control. This segmentation allows localized regulation without requiring complex global control circuitry, reducing overall device complexity while maintaining real-time adaptability in each region
Solution Approach 2:
Each electrically isolated region has its own performance indicators and control mechanisms, allowing tailored performance regulation specific to local requirements. This local quality approach eliminates the need for complex centralized control, reducing area overhead while enabling real-time performance management
2Productivity
If adaptive voltage supply is used for different functional regions, then performance optimization is achieved, but sophisticated adaptation and power conversion circuits increase area overhead
Solution Approach 1:
The invention extracts only the essential performance control functionality needed for each region, eliminating sophisticated power conversion circuits. By using simple voltage control mechanisms rather than complex DC-DC converters, the solution achieves performance optimization with minimal area overhead
Solution Approach 2:
The patent employs simple, low-cost voltage control elements rather than expensive complex power management circuits. These simplified control mechanisms provide adequate performance optimization without the high area overhead associated with sophisticated adaptation circuits
3Speed
If decentralized control with local monitoring is implemented, then fast transient response is achieved, but additional monitoring circuits increase area overhead
Solution Approach 1:
The monitoring functions are merged into the existing circuit structures of each electrically isolated region rather than being implemented as separate additional circuits. This integration achieves fast transient response through local monitoring while minimizing area overhead by reusing existing circuit elements
Data Source
AI summary
The present invention relates to a method and circuit arrangement for controlling performance of an integrated circuit in response to a monitored performance indicator, wherein power supply of the integrated circuit is controlled based on said performance indicator. At least one of a noise level of the controlled power supply and a clock frequency generated in said integrated circuit is monitored and a respective control signal is fed back to the controlling function if the checking result is not within a predetermined range. Thereby, an simple and easily extendable automatic adaptation to process variations can be achieved.