The reference design balances excessive effectivity, excellent audio output high quality, and flexibility in design customization, making it superb for audio engineering and product improvement initiatives.
Class D amplifiers are a cornerstone of recent audio expertise, celebrated for his or her excessive effectivity and glorious power-handling capabilities. In contrast to their analogue counterparts, Class D amplifiers convert incoming analog indicators right into a sequence of high-frequency pulses, considerably lowering energy loss and warmth era. This effectivity makes them superb for a variety of purposes, from shopper electronics like transportable audio system and residential theater techniques, to skilled audio tools and public tackle techniques. Their compact design and talent to ship highly effective, high-fidelity audio whereas conserving vitality and minimizing area necessities have made them an indispensable expertise within the audio trade.
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 supply a strong audio output, that includes specs equivalent 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 a wide range of audio purposes. This degree of energy output is maintained with distinctive effectivity, surpassing 96% beneath full load, due to the combination of GaN E-HEMTs (Gallium Nitride Excessive Electron Mobility Transistors). The amplifier’s whole harmonic distortion plus noise (THD+N) is impressively low at lower than 0.03%, making certain clear and crisp audio replica.
The design of the GS-EVB-AUD-AMP2-GS permits for scalability in energy output by enhanced heatsinking and thermal administration strategies. This characteristic makes it appropriate for a spread of audio purposes, from dwelling theater techniques to skilled audio setups. Accompanying the amplifier is the GS-EVB-AUD-SMPS2-GS, an analysis board for a whole LLC Energy Provide with Energy Issue Correction (PFC). This energy provide helps a common AC line enter voltage from 85V to 264V and supplies 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 simple 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 degree 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 may be simply built-in into completely different audio techniques and tailor-made to particular consumer 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 concerning the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.
