This reference design demonstrates a 1kVA Class-H audio and tracking power supply audio subsystem. The TAS6684-Q1 audio amplifier tracks the envelope of the digital audio input and adjusts the LM5125A-Q1 boost output voltage to meet the power efficiency requirements without the need for an external microcontroller. This design leads to improved efficiency, thermal performance, and a smaller total footprint. In addition, this reference design allows for a Class-H implementation to be plug-and-play with minimal software changes to the rest of the automotive audio architecture.
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 overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
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
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Design guide | 8-Channel, 1kVA, Class-H Audio Amplifier Reference Design | PDF | HTML | Jun 4, 2026 |
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