LED Driver Circuit Tapping Controller Power Between Diodes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LED driving circuits limit the further improvement of power consumption and efficiency of LEDs, hindering their performance in achieving 'carbon peak' and 'carbon neutrality' goals.
Innovation Solution
A high-efficiency LED driving circuit design that includes a rectifying module, a power converting module with a controller, and a power supplying module, where the power input pin of the controller is connected to a point between two LEDs, allowing for the generation of branch currents that reduce power consumption and enhance efficiency by distributing voltage effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power input pin of the controller is connected to the power source directly, then the controller can be driven properly, but the voltage applied to the power source input pin is high causing heat generation and reduced reliability
Solution Approach 1:
The patent segments the power supply path by connecting the power input pin to an intermediate point between two LEDs rather than directly to the power source. This segmentation creates multiple voltage drops along the power path, reducing the voltage at the controller's power input pin and consequently lowering heat generation while maintaining reliable operation
Solution Approach 2:
The patent introduces an intermediary connection point between the power source and the controller's power input pin. This intermediary point is located between two LEDs in the circuit, allowing the controller to receive reduced voltage through the voltage drops across the LEDs, thereby reducing heat generation without compromising reliability
2Reliability
If the driving current drives all LEDs through the controller, then the controller can be powered, but the voltage applied to power supplying pins of LEDs is high which can penetrate through the power source input pin
Solution Approach 1:
The patent segments the LED string into two groups by tapping the power input between two LEDs. This segmentation ensures that not all LEDs are connected through the controller's power pin, thereby preventing high voltage from penetrating through the power source input pin while maintaining controller reliability
Solution Approach 2:
The patent uses the intermediate connection point between two LEDs as a mediator to prevent high voltage penetration. By connecting the power input pin at this intermediate point, the voltage from power supplying pins of LEDs is reduced before reaching the controller, preventing harmful high voltage penetration
3Loss of energy
If conventional LED driving circuits are used, then the circuit structure is simple, but the power consumption is high and efficiency cannot be improved
Solution Approach 1:
The patent applies self-service by using the voltage drops across the LEDs themselves to reduce the voltage at the controller's power input pin. The LEDs naturally occurring voltage drops are utilized to lower power consumption and reduce heat generation without requiring additional active components or complex control circuits
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
The circuit design reduces power consumption, enhances operating efficiency, improves reliability by minimizing voltage and heat generation in the controller, and is applicable to various LED lighting devices without significant cost increase, achieving energy-saving goals and commercial value.
Implementation Method 1
a rectifying module, a power converting module and a power supplying module. The power converting module is connected to the rectifying module
Data Source
AI summary
A high-efficiency LED driving circuit includes a rectifying module, a power converting module and a power supply module. The power converting module is connected to the rectifying module and a load, and includes a controller. The load includes a plurality of LEDs. The power input pin of the controller is connected to a connecting point and the connecting point is disposed between two of the LEDs. The quantity of the LEDs can be 2 or more than 2. The circuit design of the driving circuit can effectively reduce the power consumption and heat generation thereof, such that the reliability of the driving circuit can be effectively enhanced.