The reference design balances excessive effectivity, excellent audio output high quality, and flexibility in design customization, making it ultimate for audio engineering and product growth initiatives.
Class D amplifiers are a cornerstone of contemporary audio expertise, celebrated for his or her excessive effectivity and wonderful power-handling capabilities. Not like their analogue counterparts, Class D amplifiers convert incoming analog indicators right into a sequence of high-frequency pulses, considerably decreasing energy loss and warmth era. This effectivity makes them ultimate for a variety of functions, from shopper electronics like moveable audio system and residential theater methods, to skilled audio gear and public tackle methods. Their compact design and skill to ship highly effective, high-fidelity audio whereas conserving power and minimizing area necessities have made them an indispensable expertise within the audio business.
The GaN Class D Audio Amplifier reference design by Infineon, mannequin GS-EVB-AUD-AMP2-GS, is a complicated platform for creating high-performance audio amplifiers. This analysis board demonstrates the capabilities of a stereo Class-D audio amplifier, optimized for delivering sturdy sound high quality with minimal energy loss. Right here’s a complete overview of its options, advantages, and technical specs:
The analysis board is designed to offer a robust audio output, that includes specs akin to 200 watts per channel into an 8-ohm load, 300 watts per channel right into a 4-ohm load, and a steady output energy capability of as much as 400 watts. These capabilities guarantee sturdy efficiency appropriate for quite a lot of audio functions. This stage of energy output is maintained with distinctive effectivity, surpassing 96% below full load, due to the combination of GaN E-HEMTs (Gallium Nitride Excessive Electron Mobility Transistors). The amplifier’s complete harmonic distortion plus noise (THD+N) is impressively low at lower than 0.03%, guaranteeing clear and crisp audio replica.
The design of the GS-EVB-AUD-AMP2-GS permits for scalability in energy output via enhanced heatsinking and thermal administration methods. This characteristic makes it appropriate for a spread of audio functions, from residence theater methods to skilled audio setups. Accompanying the amplifier is the GS-EVB-AUD-SMPS2-GS, an analysis board for an entire LLC Energy Provide with Energy Issue Correction (PFC). This energy provide helps a common AC line enter voltage from 85V to 264V and gives a +/-32 VDC regulated output voltage. Just like the amplifier, the facility provide boasts excessive effectivity (better than 90% at full load) and is able to a 400W steady output. Its design facilitates straightforward scaling by redesigning magnetic elements alongside correct thermal administration.
The amplifier makes use of Infineon’s proprietary CoolGaN energy transistors, which contribute considerably to its excessive effectivity and efficiency. These transistors function at 100V within the audio amplifier and 650V within the energy provide unit. The analysis board is engineered for fanless operation, requiring no exterior DC provides because of its self-powered functionality from the AC line enter. Minimal exterior elements are wanted due to a excessive stage of integration with the D2Audio Controller/Digital Sign Processor (DSP).
The high-performance class D stereo amplifier board helps each open-loop and closed-loop operations and accommodates numerous commonplace audio supply inputs. This flexibility ensures that the analysis board could be simply built-in into completely different audio methods and tailor-made to particular person necessities.
Infineon has examined this reference design. It comes with a invoice of supplies (BOM), schematics, a design file, and so forth. Yow will discover further information in regards to the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.