Single-Source Slew Rate Circuit With Feedback Delay Control

The patent merges the functions of multiple signal sources into a single signal source by using feedback mechanisms. The output signal is fed back through delay circuits and compared with the original signal to generate control signals that adjust the slew rate, eliminating the need for separate signal sources while maintaining control precision.

The patent employs feedback by taking the output signal from the output buffer, delaying it through feedback delay circuits with different delay amounts, and comparing it with the original signal. The phase difference detection and counting generate control signals that automatically adjust the variable delay circuit to achieve precise slew rate control.

The patent makes the slew rate dynamic by using a variable delay circuit whose delay amount can be adjusted based on feedback. The system automatically adjusts the delay amount to optimize the slew rate, allowing fast voltage change when needed while reducing slew rate when signal reflection noise becomes problematic.

The patent changes the delay amount parameter of the variable delay circuit based on feedback from phase difference detection. By adjusting this parameter, the slew rate is dynamically controlled to balance responsiveness and noise reduction according to actual signal conditions.

The patent uses feedback to continuously monitor the phase difference between the original signal and the delayed feedback signal. This feedback mechanism automatically adjusts the delay amount to maintain optimal slew rate, preventing excessive delay time while keeping noise under control through dynamic adjustment.

The system dynamically adjusts the slew rate based on feedback conditions, allowing the delay amount to vary rather than being fixed. This enables the system to achieve fast voltage change when conditions permit while reducing slew rate only when necessary to prevent noise, minimizing overall delay time.