Supply Voltage Noise Removal Circuit Using Adaptive Loading Control
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Solution Overview
Problem
Integrated circuits face operational disruptions due to noise in the supply voltage, which affects the smooth functioning of driving circuits and overall circuit performance.
Innovation Solution
A noise removing circuit comprising a reference voltage control circuit, noise detection circuit, noise calculation circuit, and loading control circuit that performs noise detection sequences to generate a loading control signal for controlling the supply voltage, thereby removing noise by adjusting the loading value based on detected peak voltage and frequency information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If noise detection and removal operations are performed on supply voltage, then noise is removed and driving circuit operation is stabilized, but circuit complexity increases due to additional noise removing circuit components
Solution Approach 1:
The noise removing circuit is integrated within the existing integrated circuit structure, merging the noise removal function with the driving circuit. The reference voltage control circuit, noise detection circuit, noise calculation circuit, and loading control circuit are all incorporated as part of the overall circuit system, sharing common components and signal paths where possible, thereby reducing overall device complexity while maintaining noise removal functionality.
Solution Approach 2:
The noise removing circuit performs multiple functions: it detects noise in the supply voltage, calculates noise characteristics (peak voltage and frequency), generates loading control signals, and adjusts loading values to remove noise. Additionally, the reference voltage control circuit serves both as a reference for noise detection and as a controllable element for noise removal. This multi-functionality reduces the need for separate dedicated components, thereby managing circuit complexity.
2Measurement precision
If multiple noise detection sequence operations are performed to detect peak voltage and frequency information, then noise detection precision is improved, but operation time increases
Solution Approach 1:
The reference voltage control circuit performs preliminary setup by generating a reference voltage before the noise detection circuit begins its detection sequence. This preliminary action allows the noise detection circuit to immediately compare the supply voltage against the pre-established reference voltage, avoiding delays that would occur if the reference voltage needed to be generated during the detection process. The counting circuit is also prepared in advance to immediately capture and count comparison results.
Solution Approach 2:
The noise detection circuit performs continuous comparison operations between the supply voltage and reference voltage throughout the detection sequence. The counting circuit continuously accumulates comparison results to build up the noise detection data. This continuous operation allows multiple measurements (for both peak voltage and frequency information) to be performed in an uninterrupted sequence, improving precision without proportionally increasing total detection time compared to discrete, stop-and-start measurements.
3Reliability
If loading control signals are generated based on counting values and reference voltage operations, then noise removal effectiveness is improved, but energy consumption increases
Solution Approach 1:
The loading control circuit adjusts the loading value applied to the supply voltage based on the noise characteristics detected. By dynamically changing the loading parameter in response to detected noise levels, the circuit achieves effective noise removal while avoiding excessive energy consumption. The loading control signal modulates the loading circuit to apply just enough correction to remove noise, rather than continuously applying maximum loading that would waste energy.
Solution Approach 2:
The noise removing circuit operates as a closed-loop feedback system. The noise detection circuit continuously monitors the supply voltage, the noise calculation circuit processes this information to determine noise characteristics, and the loading control circuit adjusts the loading value based on this feedback. This feedback mechanism ensures that energy is consumed only when and to the extent necessary for noise removal, rather than continuously, thereby improving energy efficiency while maintaining noise removal effectiveness.
Data Source
AI summary
A noise removing circuit may include: a reference voltage control circuit configured to perform a noise detection sequence operation based on noise detection sequence information, and control a reference voltage based on a counting value; a noise detection circuit configured to compare a supply voltage and the reference voltage, and generate a counting value corresponding to noise which has occurred in the supply voltage; a noise calculation circuit configured to generate a loading control signal corresponding to the noise by performing an operation on the counting value and the reference voltage; and a loading control circuit configured to control a loading value for the supply voltage based on the loading control signal.