This reference design showcases the TPS92682 and the TPS92520 as a fully self functional three-channel LED driver for headlight applications. The design is intended to be a low-cost halogen headlight module replacement compatible with an automotive body control module. The three LED channels drive highbeam/lowbeam, turn indicator and daytime running light, and position marker light. The design uses one TPS92682 dual channel controller as a constant voltage boost and a constant current SEPIC. It also uses one TPS92520 supplied by the boost for two synchronous rectified constant current buck converters. The board is designed with ground strip to allow enclosing the power stages for EMI compliance which includes CISPR 25 Class 5 conducted test results.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Automotive LED Headlight Driver Module for Halogen Replacement Reference Design | Jul. 28, 2020 |
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