LED Driver Offline Tuning Interface for Dynamic Output Adjustment
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Solution Overview
Problem
Existing LED driver systems are limited by fixed maximum output voltage and current, restricting their adaptability and requiring multiple drivers for different power configurations, which increases development time, cost, and storage needs.
Innovation Solution
A single LED driver circuit with a power converter and dimming interface that allows dynamic adjustment of output voltage and current through a tuning interface, enabling constant power operation and consolidation of multiple drivers into one unit without additional wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LED drivers with fixed output parameters are used to cover different power configurations, then the adaptability to different LED loads is improved, but the device complexity, development time, cost, and storage needs increase
Solution Approach 1:
The patent implements a single LED driver capable of operating with multiple different LED string configurations by allowing dynamic reconfiguration of output parameters. The driver can be programmed to support different maximum output voltages and currents through a tuning interface, eliminating the need for multiple dedicated drivers for different power requirements.
Solution Approach 2:
The patent introduces dynamic reconfiguration capability where the driver's maximum output voltage and current parameters can be changed during operation or setup phases. This is achieved through a tuning interface that allows programming of different operating parameters, enabling the same hardware to adapt to various LED load configurations without physical changes.
2Adaptability or versatility
If multiple LED drivers with fixed output parameters are used to cover different power configurations, then the adaptability to different LED loads is improved, but the development time and cost increase
Solution Approach 1:
The patent implements a single LED driver capable of operating with multiple different LED string configurations by allowing dynamic reconfiguration of output parameters. The driver can be programmed to support different maximum output voltages and currents through a tuning interface, eliminating the need for multiple dedicated drivers for different power requirements.
Solution Approach 2:
The patent allows changing the operational parameters (maximum output voltage and current) of the driver through software programming via a tuning interface. This enables the same hardware platform to be adapted to different applications by simply reprogramming parameters rather than developing multiple hardware variants.
3Adaptability or versatility
If multiple LED drivers with fixed output parameters are used to cover different power configurations, then the adaptability to different LED loads is improved, but the storage needs increase
Solution Approach 1:
The patent implements a single LED driver capable of operating with multiple different LED string configurations by allowing dynamic reconfiguration of output parameters. The driver can be programmed to support different maximum output voltages and currents through a tuning interface, eliminating the need for multiple dedicated drivers for different power requirements.
Solution Approach 2:
The patent combines the functionality of multiple fixed-parameter drivers into a single reconfigurable driver unit. By merging the capabilities of what would otherwise require separate physical devices into one unified system with programmable parameters, the storage space requirement is significantly reduced.
4Device complexity
If a single LED driver with fixed maximum output parameters is used, then the device complexity is reduced, but the adaptability to different LED loads deteriorates
Solution Approach 1:
The patent introduces dynamic reconfiguration capability where the driver's maximum output voltage and current parameters can be changed during operation or setup phases. This is achieved through a tuning interface that allows programming of different operating parameters, enabling the same hardware to adapt to various LED load configurations without physical changes.
Solution Approach 2:
The patent allows changing the operational parameters (maximum output voltage and current) of the driver through software programming via a tuning interface. This enables the same hardware platform to be adapted to different applications by simply reprogramming parameters rather than developing multiple hardware variants.
Data Source
AI summary
An LED driver circuit is provided with a dynamic operating range which can be set using an offline tuning interface. During an online mode of operation, a controller for a power converter is configured to regulate the output voltage and the output current generated by the power converter based on a dimming control signal from a dimming control interface, a sensed output from the power converter, and programmed maximum output voltage and maximum output current values. During an offline mode of operation, the tuning interface may be coupled to the dimming control interface and provides a sequence of digital pulses corresponding to a desired maximum output voltage and/or maximum output current. The controller then modifies the programmed maximum output voltage and the maximum output current values based on the predetermined sequence of digital pulses received via the tuning interface circuit.