Dynamic Crossing Point Inverter for Duty Error Correction
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Solution Overview
Problem
Existing inverter designs face issues with duty error and baseline wander due to fixed crossing points, which affect signal transitions and output levels.
Innovation Solution
An inverter circuit with a dynamic crossing point, utilizing tunable pull-up and pull-down circuits controlled by a control circuit to adaptively adjust the crossing point, allowing for earlier and more efficient signal transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a fixed crossing point inverter is used, then the circuit structure is simple, but the signal transition time is long and duty error occurs
Solution Approach 1:
The patent applies the Dynamics principle by making the crossing point dynamic rather than fixed. The control circuit adjusts the crossing point voltage based on the input signal characteristics, allowing the inverter to adapt to different signal conditions. This dynamic adjustment mechanism reduces signal transition time and eliminates duty error while maintaining reasonable circuit complexity through automated control.
Solution Approach 2:
The patent implements Parameter changes by varying the crossing point voltage parameter according to input signal requirements. The control circuit modifies the threshold voltage dynamically, enabling the inverter to optimize its switching characteristics for different input conditions, thereby reducing transition time and preventing duty cycle distortion.
2Reliability
If a fixed crossing point inverter is used, then the circuit design is straightforward, but baseline wander occurs and output levels are unreliable
Solution Approach 1:
The patent applies the Feedback principle by implementing a control circuit that monitors the inverter's operation and adjusts the crossing point accordingly. This feedback mechanism ensures that the output levels remain stable and reliable by compensating for baseline wander and other signal degradation effects, maintaining consistent performance across varying input conditions.
Solution Approach 2:
The patent implements Self-service by enabling the inverter to automatically adjust its own crossing point through the control circuit. The system self-regulates to maintain optimal performance without requiring external intervention, thereby improving output level stability and eliminating baseline wander through autonomous adaptation.
3Adaptability or versatility
If the crossing point is fixed, then the inverter circuit is simple to implement, but it cannot address duty error and baseline wander issues
Solution Approach 1:
The patent applies the Dynamics principle by transforming the static crossing point into a dynamic parameter that can adapt to different signal conditions. The control circuit enables the inverter to adjust its crossing point in real-time, providing duty error correction capability and baseline wander compensation while maintaining implementation feasibility through automated control mechanisms.
Data Source
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AI summary
An inverter circuit (100) includes a first metal-oxide-semiconductor, MOS, transistor (M1), a second MOS transistor (M2), a tunable pull-up circuit (102), a tunable pull-down circuit (104), and a control circuit (106). The first MOS transistor (M1) has a control terminal configured to receive a first input signal (IN), a first connection terminal, and a second connection terminal. The second MOS transistor (M2) has a control terminal configured to receive the first input signal (IN), a first connection terminal, and a second connection terminal coupled to the second control terminal of the first MOS transistor (M1). The tunable pull-up circuit (102) is coupled between the first connection terminal of the first MOS transistor (M1) and a first reference voltage (VDD). The tunable pull-down circuit (104) is coupled between the first connection terminal of the second MOS transistor (M2) and a second reference voltage (GND). The control circuit (106) adaptively adjusts pull-up strength of the tunable pull-up circuit (102) and pull-down strength of the tunable pull-down circuit (104).