SLAAEU7 February   2025 TAS5805M

 

  1.   1
  2.   Abstract
  3. 1Power Architecture of a Class-D Digital Audio Amplifier and Its Loss Breakdown
  4. 2Improving Audio Amplifier Efficiency with Class-H Mode
    1. 2.1 How Class-H Mode Improves Efficiency
    2. 2.2 TI's Digital Class-H Innovation
  5. 3Improving Efficiency With External GVDD and AVDD and Considerations
    1. 3.1 Testing Power Saving from External GVDD and AVDD and Testing the Impact on Audio Metrics
    2. 3.2 Considerations for External GVDD and AVDD:
      1. 3.2.1 Voltage Range of External GVDD and AVDD:
      2. 3.2.2 Sequence Requirements for External GVDD and AVDD:
  6. 4Summary
  7. 5References

4 Summary

Audio amplifier efficiency is crucial in portable speakers, as its improvement means a noticeably longer playback experience for users. The efficiency of Class-D audio amplifiers can be effectively improved through TI's innovative Class-H envelope tracking algorithm and external GVDD and AVDD. These efficiency improvements also bring system benefits, including reduced temperature rise and extended battery life, ultimately benefiting end users.