TIDUF57 November   2023

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations [Required Topic]
    3. 2.3 Highlighted Products
      1. 2.3.1 LMG3624
  9. 3System Design Theory
    1. 3.1 Quasi-Resonant Operation
    2. 3.2 Transformer Design
    3. 3.3 GaN FET Switching Device
    4. 3.4 Current Sense Emulation Resistor
  10. 4Hardware, Testing Requirements, and Test Results
    1. 4.1 Required Hardware
      1. 4.1.1 Hardware
      2. 4.1.2 Testing Equipment
    2. 4.2 Test Setup
    3. 4.3 Test Results
      1. 4.3.1 Efficiency Results
      2. 4.3.2 Thermal Results
      3. 4.3.3 Switching Waveforms
      4. 4.3.4 Switching Transients
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Tools and Software
    3. 5.3 Documentation Support [Required Topic]
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  12. 6About the Author

4.3.1 Efficiency Results

Figure 4-6, Figure 4-7, Table 4-1, and Table 4-2 show the efficiency data collected at 115 VAC and 230 VAC input. The setup described in the Test Setup section was used.

GUID-20231115-SS0I-Z30F-ZB3M-J0VNPTPGM54S-low.svgFigure 4-6 115 VAC, 60 Hz Efficiency Across Load
GUID-20231115-SS0I-2W01-MJQK-4S2FZW8WVHCS-low.svgFigure 4-7 230 VAC, 50 Hz Efficiency Across Load
Table 4-1 Efficiency at 115 VAC, 60 Hz
LOAD VOUT IOUT POUT PIN EFFICIENCY
100% 20.133 3.2564 65.561 69.676 94.09%
75% 20.109 2.4306 48.877 51.825 94.31%
50% 20.074 1.6220 32.561 34.526 94.31%
25% 20.048 0.8120 16.278 17.391 93.60%
10% 20.034 0.3149 6.308 6.891 91.55%
Average 94.08%
Standby Power 29.498 mW
Table 4-2 Efficiency at 230 VAC, 50 Hz
LOAD VOUT IOUT POUT PIN EFFICIENCY
100% 20.139 3.2550 65.552 69.501 94.32%
75% 20.111 2.4296 48.861 51.965 94.03%
50% 20.083 1.6200 32.534 34.796 93.50%
25% 20.055 0.8118 16.281 17.428 93.42%
10% 20.043 0.3148 6.310 7.011 90.01%
Average 93.82%
Standby Power 37.304 mW