Power Supply Voltage Control Using Predicted Voltage Drop Impact
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Solution Overview
Problem
Existing semiconductor integrated circuit technologies face inefficiencies in power supply voltage correction, leading to unnecessary power consumption as they perform voltage corrections even when voltage drops do not affect circuit operations.
Innovation Solution
A semiconductor integrated circuit with a prediction circuit, impact determination circuit, and power supply voltage control circuit that predict and determine the impact of voltage drops on circuit operations, only performing voltage corrections when necessary to maintain operational voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage correction is performed based on instantaneous voltage drop, then power supply voltage is increased during voltage drop, but unnecessary voltage corrections occur leading to increased power consumption
Solution Approach 1:
The prediction circuit performs preliminary action by predicting future voltage drops before they actually occur. The circuit calculates predicted voltage drops based on current consumption patterns and historical data, then proactively adjusts power supply voltage in advance. This prevents the need for reactive corrections after voltage drops occur, reducing unnecessary power consumption while maintaining voltage stability.
Solution Approach 2:
The system implements feedback by continuously monitoring actual voltage drops and comparing them with predicted voltage drops. The determination circuit uses this feedback to verify prediction accuracy and adjust future predictions. This closed-loop feedback mechanism ensures voltage corrections are only performed when actually needed, optimizing power consumption while maintaining reliable voltage supply.
2Measurement precision
If voltage correction is performed based on voltage history, then voltage correction accuracy is improved, but response time to instantaneous voltage drops is delayed
Solution Approach 1:
The prediction circuit performs preliminary calculations using current consumption data and operational patterns to forecast voltage drops before they occur. This allows the system to prepare correction actions in advance, achieving both high accuracy (through comprehensive prediction algorithms) and fast response (by acting before the actual drop occurs, rather than waiting for historical analysis).
Solution Approach 2:
The system dynamically adapts its prediction and correction strategy based on real-time operating conditions. The prediction circuit adjusts its parameters and models according to current circuit states, allowing it to optimize between accuracy and response time dynamically. This enables the system to maintain high precision while responding quickly to varying voltage drop scenarios.
Data Source
AI summary
A semiconductor integrated circuit includes a first circuit connected to a power supply line, a determination portion configured to determine whether a voltage drop in the power supply line affects an operation of the first circuit, and a power supply voltage control portion configured to control change of a power supply voltage value on the basis of a determination result of the determination portion.