LED Constant-Current Driver Circuit Reducing Voltage Attenuation
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Solution Overview
Problem
Existing LED driver circuits face issues with voltage attenuation and inability to achieve different power input voltages, limiting their reliability and flexibility in LED landscape lighting applications.
Innovation Solution
An LED constant-current driver circuit comprising multiple driver modules connected in series, where each module divides the input voltage and processes display data to maintain constant current and voltage differences across LED lights, ensuring consistent operation across varying input voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional constant-voltage mode is used with series-connected LED chips, then the circuit structure is simple, but voltage fluctuation causes current changes and different power input voltages cannot be achieved
Solution Approach 1:
The patent divides the LED strip into multiple independent control segments, with each segment having its own driver module. This segmentation allows different power input voltages to be applied to different segments, achieving adaptability to various power input voltages while maintaining a relatively simple circuit structure within each segment.
Solution Approach 2:
The patent introduces constant-current driver modules that dynamically adjust the driving current based on the applied voltage. Each driver module can adapt to different input voltages and maintain constant current output, enabling the system to handle different power input voltages flexibly while keeping the overall structure manageable.
2Device complexity
If conventional LED driver circuits are used, then the structure is relatively simple, but voltage attenuation is great and different power input voltages cannot be achieved
Solution Approach 1:
The driver circuit is segmented into multiple independent constant-current driver modules distributed along the LED strip. Each module independently controls a section of LEDs, preventing voltage attenuation from affecting the entire strip. This segmentation maintains reliability by ensuring stable voltage delivery to each segment while keeping individual module structures simple.
Solution Approach 2:
The patent introduces constant-current driver modules as intermediary devices between the power supply and LED chips. These driver modules act as active components that compensate for voltage attenuation by actively regulating the current, thereby maintaining voltage stability and reliability throughout the LED strip without requiring complex overall circuit design.
3Adaptability or versatility
If constant-current driver modules are added to achieve different power input voltages, then voltage adaptability improves, but device complexity increases
Solution Approach 1:
The constant-current driver modules are designed with universal functionality to handle multiple input voltages and control modes. Each module can adapt to different power input voltages and perform both constant-current regulation and data signal transmission, reducing the need for additional specialized components and thereby limiting the increase in overall device complexity.
Solution Approach 2:
The driver modules are designed to be self-contained units that automatically adapt to the applied voltage and regulate current without requiring external complex control circuits. Each module independently performs voltage adaptation and current regulation, eliminating the need for additional complexity in the overall driver circuit design while achieving power input voltage adaptability.
Data Source
AI summary
The present disclosure relates to the technical field of LED light control, and in particular to an LED constant-current driver circuit. According to the LED constant-current driver circuit of the present disclosure, by connecting driver modules together in series, when a voltage is input, the input voltage is distributed to each driver module. Thus, different ranges of voltages can be input, and the attenuation of the input voltage is reduced, increasing the reliability of the system. Moreover, the overall structure is simple, reducing the cost of the product.