TIDT365 November   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 POUT
    4. 2.4 Idle Power Loss
    5. 2.5 THD
    6. 2.6 Thermal Images
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Dead Time
    3. 3.3 Minimum Pulse on Time of LI
    4. 3.4 Output Waveform

Description

This reference design describes a discrete, single-ended, class D power stage with GaN high electron mobility transistors (HEMT). This design uses the LMG2100R044 as power switches to make a class D audio amplifier working at MHz frequency and makes a contrast with the one working at kHz frequency. This GaN-based class D power stage shows excellent efficiency at both MHz and kHz.