Integrated Circuit Voltage Detection Circuit Asymmetry Feedback
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Solution Overview
Problem
Integrated circuits face challenges in accurately detecting voltage fluctuations due to asymmetric current distribution in branches of existing voltage detection circuits, leading to inaccurate detection results.
Innovation Solution
A voltage detection circuit with a first and second branch, each containing a voltage control current component and a load, where the first branch adjusts current based on the detected voltage, and the second branch uses a current signal detection component to output a preset signal for real-time voltage determination, with optional potential adjustment to equalize current flow between branches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a voltage detection circuit uses asymmetric current distribution in branches, then the circuit structure is simpler, but the detection accuracy deteriorates
Solution Approach 1:
The patent applies asymmetry principle by intentionally designing different resistance values for the first and second loads (R1≠R2) to create asymmetric current distribution in the two branches. This asymmetric design allows the circuit to achieve balanced current flow through the voltage control current component, thereby improving detection accuracy while maintaining a relatively simple circuit structure.
2Device complexity
If the voltage detection circuit does not equalize current flow between branches, then the device complexity is lower, but the detection precision deteriorates
Solution Approach 1:
The patent implements feedback mechanism through the voltage control current component that continuously monitors the voltage signal and adjusts the current flow in the first branch accordingly. This feedback control ensures that the current flowing through the first load equals the current flowing through the second load (I1=I2), thereby achieving equalized current distribution and improving detection precision without significantly increasing device complexity.
3Device complexity
If noise interference is not minimized in the voltage detection circuit, then the device complexity is lower, but the detection accuracy deteriorates
Solution Approach 1:
The patent applies equipotentiality principle by ensuring that the voltage drops across the first and second loads are equal when the currents are equal (I1×R1 = I2×R2). This equipotential design minimizes noise interference by creating a balanced circuit configuration where differential noise signals are rejected, thereby improving detection accuracy without requiring complex noise filtering circuits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Accurately detects voltage fluctuations by minimizing noise interference and ensuring balanced current distribution, thereby improving detection accuracy and reliability.
Implementation Method 1
a first voltage control current component and a first load connected in series... The first voltage control current component is configured to adjust a first current flowing through the first branch according to a size of the voltage signal to be detected
Implementation Method 2
the second branch includes a current signal detection component and a second load connected in series... The current signal detection component is configured to output, in a real time manner, a preset signal characterizing a second current flowing through the second branch
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
Disclosed are an integrated circuit internal voltage detection circuit, a detection method, and an integrated circuit. The circuit comprises: a first current source, a first branch and a second branch, the first branch and the second branch being used for dividing a current signal output by the first current source. The first branch comprises a first voltage control current element and a first load connected in series, and the second branch comprises a current signal detection element and a second load connected in series. A control signal input end of the first voltage control current element inputs a voltage signal to be detected. The current signal detection element is used for outputting in real time a preset signal representing a second current flowing through the second branch, so that a change of the voltage signal to be detected is determined on the basis of the preset signal.