Voltage Control Circuit Using Speed Feedback for IC Stability
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Solution Overview
Problem
Current electronic devices face issues due to varying IC characteristics, leading to inefficient power consumption and operational stability problems caused by fixed supply voltages, which result in IC elimination during mass production.
Innovation Solution
A voltage control circuit and method that includes a speed detecting circuit and a control circuit to adjust the operating voltage based on the detected speed, generating a voltage control signal to maintain the operating speed at a predetermined level, thereby optimizing power usage and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed supply voltage is provided to the IC, then the operating voltage is stable and easy to control, but power consumption increases excessively when the IC operates faster than expected
Solution Approach 1:
The patent implements dynamic voltage adjustment by detecting the actual operating speed of the IC and automatically modifying the supply voltage accordingly. The voltage control circuit transitions from a static fixed voltage supply to a dynamic system that adapts voltage levels based on real-time performance feedback, reducing power consumption when the IC operates faster than expected while maintaining stability when operating at or below expected speeds.
Solution Approach 2:
The patent employs a feedback mechanism where the operating speed of the IC is continuously detected and fed back to the voltage control circuit. This feedback loop enables the system to compare actual performance against expected performance and adjust the supply voltage in response, creating a closed-loop control system that optimizes power consumption while maintaining operational reliability.
2Device complexity
If a fixed supply voltage is provided to the IC, then the voltage control circuit is simple, but the IC operation becomes unstable or yield decreases when the IC operates slower than expected
Solution Approach 1:
The patent implements a self-service mechanism where the IC essentially adjusts its own operating voltage through the integrated voltage control circuit. The system uses the IC's own operating characteristics as the basis for voltage adjustment, eliminating the need for external manual intervention or complex external control systems. The IC detects its own performance and triggers appropriate voltage adjustments autonomously.
3Reliability
If the operating voltage is increased to ensure stable operation for slower ICs, then operational stability is maintained, but power consumption increases for faster ICs
Solution Approach 1:
The patent dynamically changes the voltage parameter based on the detected operating speed of the IC. Instead of using a fixed high voltage to ensure stability for all ICs, the system adjusts the voltage parameter in real-time according to each IC's actual performance characteristics. This parameter change strategy allows the system to maintain operational stability for slower ICs while reducing power consumption for faster ICs that require lower voltages.
Data Source
AI summary
A voltage control circuit for controlling an operating voltage of a target circuit, including: a speed detecting circuit, configured to detect an operating speed of the target circuit; and a control circuit, coupled to the speed detecting circuit, configured to generate a voltage control signal according to a difference between the operating speed and a predetermined speed, to a power supply circuit which generates the operating voltage, to control the operating voltage.