This reference design describes the power solution for LCD displays in wearable devices, especially in augmented-reality (AR) and virtual reality (VR) headsets. The high current accuracy backlight driver is achieved by LP8556, which provides high current during small duty cycle synchronized with refresh rate. The LCD bias power driver is provided by TPS65132, which is simple to use and has a small package. The detailed design theory, component selection, and test results are also discussed.
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
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 | Bcklght + LCD Bias Ref Dsign for 90-Hz Refrsh-Rate Virtual/Augmnted Realty Dsply | Oct. 22, 2018 |
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