GaN in Class-D Audio

The high performance of GaN Systems transistors in Class-D audio amplifiers is demonstrated in the GaN Systems Class-D Audio technical manual.

It is difficult to compare the GaN Systems’ results to the published efforts of Silicon MOSFET or other GaN-based solutions for a number of reasons. Among them are:

1. Measurement Test Benches are not defined
2. Measurement Conditions are optimized for a given measurement (and not specified)
3. Test Platforms represent highly optimized versions of the Competitive amplifier design
4. Test Measurements focus on the “best possible picture” parameters
5. Special Test Measurements often reflect individual preferences

This whitepaper covers:

• Class-D Amplifier Transistor Approaches
• Device parameters and characteristics
• Performance
• Ease of Manufacturing
• Application Circuit Layout