Optocoupler Current Driver Reducing Power and Pulse Distortion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Optocoupler systems exhibit high current consumption and pulse width distortion due to inefficient current management and signal conversion processes.
Innovation Solution
The implementation of a novel optocoupler system with a current driver logic circuit, a light source, and a transimpedance amplifier that generates and converts current signals with high, low, and null portions to reduce power dissipation and pulse width distortion by controlling LED current consumption and using leading edges for signal transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional optocoupler systems use continuous current drive to the light source, then signal transmission is maintained, but power consumption increases significantly
Solution Approach 1:
The patent applies periodic action by using pulsed current drive to the light source instead of continuous current. The current driver generates periodic current pulses that correspond to the input signal transitions, allowing the optocoupler to maintain signal transmission capability while consuming power only during active pulses rather than continuously.
Solution Approach 2:
The patent implements dynamics by making the current drive adaptive and variable. The current driver dynamically adjusts the current level based on signal requirements, using higher current during transitions and lower or zero current during stable states, thereby optimizing power consumption while maintaining reliable signal transmission.
2Manufacturing precision
If conventional optocoupler systems use simple current drive, then device complexity is reduced, but pulse width distortion occurs in output signals
Solution Approach 1:
The patent applies preliminary action by pre-shaping the current pulses before they reach the light source. The current driver circuit generates precisely timed and shaped current pulses that anticipate the required light output, compensating for potential distortions in advance and ensuring accurate pulse width reproduction at the output.
Solution Approach 2:
The patent implements feedback mechanisms where the output signal characteristics are monitored and used to adjust the current drive parameters. This feedback loop allows the system to compensate for pulse width distortion by dynamically adjusting the current pulse width and amplitude based on actual output performance.
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
This approach significantly reduces power consumption and pulse width distortion by optimizing current usage and signal processing, particularly at lower frequencies, while maintaining accurate signal reproduction.
Implementation Method 1
generating, with a light source, first and second light signals corresponding to the respective high, low and null portions of the first and second current signals
Implementation Method 2
generating, with a light detector operably configured in respect of the light source, first and second light detector current signals corresponding to the respective high, low and null portions of the first and second light signals
Data Source
AI summary
According to one embodiment, there is provided an optocoupler system configured to generate current signals having high, low and no amplitude portions in response to the receipt of logic high and low input signals. The varying amplitude portions of the current signals are used to drive other portions of the isolation circuitry, and result in reduced power consumption and dissipation, as well as reduced pulse width distortion.