Pulse-Driven Buffer Circuit for Fast Response and Longer Lifespan

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional buffer designs face a trade-off where increasing responding speed reduces the lifespan, as higher bias voltage enhances speed but shortens the lifespan of electrical components.

Innovation Solution

A buffer-driving circuit with a transmitting transistor and a voltage-sharing transistor, along with a level-shifting circuit, pulse generator, and bias circuit, is used to generate pulse signals that control the transistors, optimizing voltage levels and pulse periods to enhance responding speed while prolonging the lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the bias voltage of the buffer is raised up, then the responding speed of the buffer increases, but the lifespan of the buffer is reduced

Engineering Contradiction:

Improveresponding speedVSAvoidlifespan

Core Design Contradiction:

SpeedVSDuration of action of stationary object

Solution Approach 1:

The pulse generator generates a pulse signal in advance during the transition state of the input signal, before the main switching action occurs. This preliminary pulse signal is used to pre-charge or pre-discharge the output node, preparing the buffer for faster response without requiring continuously high bias voltage, thus resolving the contradiction between speed and lifespan

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The buffer operates with periodic pulse signals generated during transition states rather than continuous high voltage. The pulse generator activates periodically only when needed (during input signal transitions), providing speed enhancement intermittently while allowing the buffer to operate at lower voltages during stable states, thereby extending lifespan while maintaining fast responding capability

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS7915922B2Buffer-driving circuit capable of increasing responding speed and prolonging lifespan, buffer, and method thereof

Publication Date: 2011.03.29 ETRON TECH INC

AI summary

A method for increasing responding speed and lifespan of a buffer includes detecting an edge of an input signal of the buffer, triggering a pulse signal with a predetermined period according to the detected edge, and driving the buffer for generating an output signal according to the pulse signal and the input signal.