Flip-Flop Logic Control Circuit for Fast Low-Power Pulse Response
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Solution Overview
Problem
In integrated circuits, flip-flops experience significant delay in responding to high-speed or narrow pulses, and increasing the size of transmission gates or inverters to reduce this delay leads to increased power consumption, particularly in low-voltage circuits.
Innovation Solution
A logic control circuit utilizing multiple MOS transistors and an output circuit to control the on/off states of these transistors based on clock signals, reducing the delay in pulse signal output while minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the size of transmission gate or inverter is increased to reduce delay, then the response delay is reduced, but the power consumption increases
Solution Approach 1:
The patent segments the single transmission gate into multiple transmission gates (first, second, third transmission gates) with different sizes arranged in series. Each transmission gate handles a portion of the signal transmission, allowing the circuit to achieve fast response without requiring a single oversized gate that would consume excessive power. The segmented structure enables optimized power-delay product.
Solution Approach 2:
Different transmission gates are assigned different widths (W1, W2, W3) based on their specific functional requirements in the signal path. The first transmission gate has width W1, the second has width W2, and the third has width W3, where these widths are optimized locally to balance speed and power consumption in different parts of the circuit rather than using a uniform oversized gate throughout.
2Speed
If the size of transmission gate or inverter is increased to reduce delay, then the response speed is improved, but the circuit complexity increases
Solution Approach 1:
The patent combines multiple transmission gates with different widths into a unified cascaded structure that works together as a single functional unit. The first, second, and third transmission gates are connected in series between the input and output, forming an integrated high-speed transmission path that achieves fast response without the complexity of separate optimized circuits.
Solution Approach 2:
The circuit uses dynamic control signals (first control signal and second control signal) to coordinate the operation of multiple transmission gates with different widths. The control signals enable the transmission gates to operate in a coordinated manner, switching between different width configurations dynamically to optimize both speed and complexity management.
Data Source
AI summary
A logic control circuit, a flip-flop, and a pulse generating circuit, where, the logic control circuit includes: a first MOS transistor, a second MOS transistor, a third MOS transistor, and an output circuit, a first end of the first MOS transistor is connected to a power supply, and a second end is connected to a first end of the second MOS transistor, a second end of the second MOS transistor is connected to a first end of the third MOS transistor, and a second end of the third MOS transistor is grounded. The second end of the first MOS transistor is also used to connect to a first end of an output circuit. A second end of the output circuit serves as an output terminal of the logic control circuit, and is also used to connect to a control terminal of the first MOS transistor.