Integrated LED Controller Circuit for Cost Reduction
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Solution Overview
Problem
Conventional LED light source driving circuits require two individual control chips for regulating brightness and color, increasing manufacturing costs due to the complexity and redundancy of control systems.
Innovation Solution
A controller and light source driving circuit that integrates a single controller with a memory module to manage both a first and second light source, using a switch monitoring signal to control the on/off states and current monitoring to adjust modes, eliminating the need for additional dimming devices and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two individual control chips are used to regulate brightness and color separately, then the light source control functions are achieved, but the manufacturing cost increases
Solution Approach 1:
The patent merges the functions of two separate control chips (brightness regulation and color regulation) into a single integrated controller. This single controller includes a current input terminal coupled to a power source through a rectifier, a switch monitoring terminal coupled to a power switch, a first control terminal for brightness control, a second control terminal for color control, and a current monitoring terminal. By integrating these functions, the patent reduces the number of components and manufacturing complexity while maintaining full control capabilities.
2Adaptability or versatility
If two control chips are used for brightness and color regulation, then comprehensive control is achieved, but the device complexity increases
Solution Approach 1:
The patent implements a universal controller that performs multiple functions: receiving electric power through the rectifier, monitoring the power switch state, controlling brightness through the first control terminal, controlling color through the second control terminal, and monitoring current through the current monitoring terminal. This multi-functional single controller eliminates the need for separate specialized chips, thereby reducing device complexity while maintaining comprehensive control capability.
Data Source
AI summary
A controller includes a current input terminal, a switch monitoring terminal, a first control terminal, a second control terminal and a current monitoring terminal. The current input terminal is coupled to a power source through a rectifier and receives electric power from the power source. The switch monitoring terminal is coupled to a power switch and receives a switch monitoring signal indicating the on/off state of the power switch. The power switch is coupled between the rectifier and the power source. Based on the switch monitoring signal, the first control terminal turns on or turns off a first light source in a light source module and the second control terminal turns on or turns off a second light source in the light source module. The current monitoring terminal monitors a current flowing through the first light source and a current flowing through the second light source.