Dual-Stage LED Driver for Wide-Voltage Hybrid Lamp Modes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hybrid LED lamps face challenges in achieving high power conversion efficiency due to wide voltage requirements for lighting and color-mixing functions, leading to energy waste and heat dissipation issues.
Innovation Solution
An LED driver system with dual power conversion modules and a control module to manage voltage conversion efficiently, optimizing ratios between input and output voltages for each module to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power conversion module is used to drive both lighting and color-mixing LED modules, then device complexity is reduced, but power conversion efficiency deteriorates due to wide voltage range requirements
Solution Approach 1:
The patent divides the power conversion function into two separate modules: a first power conversion module for lighting LED modules requiring higher voltage, and a second power conversion module for color-mixing LED modules requiring lower voltage. This segmentation allows each module to operate at optimal voltage ratios, improving overall power conversion efficiency while maintaining manageable device complexity through modular design.
2Loss of energy
If voltage conversion ratios are optimized for one working mode, then power conversion efficiency improves for that mode, but adaptability to different working modes deteriorates
Solution Approach 1:
The patent implements a universal power conversion system where the first and second power conversion modules can operate independently or in combination to support multiple working modes. The control module coordinates both modules to provide appropriate voltage outputs for different LED module configurations, enabling the system to adapt to various lighting applications while maintaining optimal efficiency in each mode.
3Loss of energy
If high power conversion efficiency is achieved through optimized voltage ratios, then energy waste is reduced, but heat dissipation becomes more difficult to manage
Solution Approach 1:
By segmenting the power conversion function into two separate modules with optimized voltage ratios for their respective LED types, the patent reduces overall energy waste and heat generation. The first power conversion module operates at higher voltage ratios suitable for lighting LED modules, while the second module operates at lower voltage ratios for color-mixing LED modules, thereby minimizing excessive heat production and improving thermal management.
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
Improves power conversion efficiency by maintaining optimal voltage ratios, reducing energy waste and heat dissipation, and enabling efficient operation in both lighting and color-mixing modes.
Implementation Method 1
a first power conversion module, a switch, a second power conversion module and a control module. The first power conversion module converts a first DC voltage into a second DC voltage and a third DC voltage
Implementation Method 2
the second power conversion module is coupled to the first power conversion module, and is to be coupled to the second LED module. The control module does not conduct the switch and controls the second power conversion module to provide a fourth DC voltage, a fifth DC voltage and a sixth DC voltage according to the second DC voltage
Data Source
AI summary
An LED driver is couple to a first LED module and a second LED module, and the LED driver includes a first power conversion module, a switch, a second power conversion module, and a control module. The control module controls the switch to conduct so as to provide a second DC voltage and a third DC voltage outputted by the first power conversion module to the first LED module. The control module controls the switch not to conduct, and controls the second power conversion module to provide a fourth DC voltage, a fifth DC voltage, and a sixth DC voltage according to the second DC voltage for providing the fourth DC voltage, the fifth DC voltage, and the sixth DC voltage to the second LED module.