LED Driving Apparatus with Dynamic Current Adjustment
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Solution Overview
Problem
Current LED driving apparatuses require redesigning various parameters to accommodate diverse power specifications of LED lamps, leading to inefficiencies in development time and cost due to high demands for input voltage and current variations.
Innovation Solution
A LED driving apparatus with a driving circuit, output detecting circuit, and output adjusting circuit that dynamically adjusts output current by detecting voltage and impedance variations, allowing for multiple current adjusting ranges to match different power specifications, using variable resistance units and switch units to control the output current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LED driving apparatuses are redesigned for each power specification requirement, then the apparatus can satisfy specific client requirements, but development time and cost increase significantly
Solution Approach 1:
The patent implements a universal LED driving apparatus that can drive LED loads with different power specifications through a single device. The driving circuit includes an output adjusting circuit with multiple switching units that can dynamically adjust output current to match different power specifications, eliminating the need to design separate driving apparatuses for each specification.
Solution Approach 2:
The patent employs dynamic adjustment of output current through switching units that can change the impedance of the output adjusting circuit in real-time. This dynamic capability allows the driving apparatus to adapt to different power specifications during operation, rather than being fixed to a single specification.
2Adaptability or versatility
If LED driving apparatuses are redesigned for each power specification requirement, then the apparatus can satisfy specific client requirements, but development cost increases
Solution Approach 1:
The patent implements a universal LED driving apparatus that can drive LED loads with different power specifications through a single device. The driving circuit includes an output adjusting circuit with multiple switching units that can dynamically adjust output current to match different power specifications, eliminating the need to design separate driving apparatuses for each specification.
3Device complexity
If the output current is fixed, then the driving circuit is simpler to design, but it cannot accommodate diverse power specifications of LED lamps
Solution Approach 1:
The patent employs dynamic adjustment of output current through switching units that can change the impedance of the output adjusting circuit in real-time. This dynamic capability allows the driving apparatus to adapt to different power specifications during operation, rather than being fixed to a single specification.
Solution Approach 2:
The output adjusting circuit is segmented into multiple switching units, where each unit can be independently controlled to adjust the total output current. This segmentation allows for flexible current adjustment while keeping each individual switching unit relatively simple in design.
Data Source
AI summary
A LED driving apparatus and a LED illumination system using the same are provided. The LED driving apparatus adapted to drive a LED load having at least one power specification includes a driving circuit, an output detecting circuit and an output adjusting circuit. The driving circuit provides an adjustable output current for driving the LED load. The output detecting circuit is coupled to the driving circuit and the LED load for detecting a driving voltage of the LED load to generate a first detecting signal. The driving circuit drives the LED load under a constant current in response to the first detecting signal. The output adjusting circuit is coupled to the output detecting circuit. The output adjusting circuit is controlled to adjust a signal level of the first detecting signal, such that the adjustable output current has at least one current adjusting range.