SLVT223 August   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Magnetics Construction
      1. 1.2.1 LLC Transformer
      2. 1.2.2 Resonant Inductor
    3. 1.3 Considerations
    4.     General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
    5. 1.4 Precautions
    6. 1.5 Dimensions
  7. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
      1.      225V Input Voltage
      2.      250V Input Voltage
      3.      300V Input Voltage
      4.      350V Input Voltage
      5.      400V Input Voltage
      6.      450V Input Voltage
    3. 2.3 Load Regulation
    4. 2.4 Thermal Images
      1. 2.4.1 Top Side
      2. 2.4.2 Bottom Side
    5. 2.5 Bode Plots
  8. 3Waveforms
    1. 3.1 Switching
      1. 3.1.1 Switching Primary Side
        1. 3.1.1.1 225V Input Voltage
        2. 3.1.1.2 300V Input Voltage
        3. 3.1.1.3 350V Input Voltage
        4. 3.1.1.4 400V Input Voltage
        5. 3.1.1.5 450V Input Voltage
      2. 3.1.2 Switching Secondary Side
        1. 3.1.2.1 225V Input Voltage
        2. 3.1.2.2 300V Input Voltage
        3. 3.1.2.3 350V Input Voltage
        4. 3.1.2.4 400V Input Voltage
        5. 3.1.2.5 450V Input Voltage
    2. 3.2 Output Voltage Ripple
      1. 3.2.1 225V Input Voltage
      2. 3.2.2 350V Input Voltage
      3. 3.2.3 450V Input Voltage
    3. 3.3 Load Transients
      1. 3.3.1 225V Input Voltage
      2. 3.3.2 350V Input Voltage
      3. 3.3.3 450V Input Voltage
    4. 3.4 Start-up Using Secondary Side Soft-Start
      1. 3.4.1 Start-Up Under No Load Conditions
        1. 3.4.1.1 225V Input Voltage
        2. 3.4.1.2 350V Input Voltage
        3. 3.4.1.3 450V Input Voltage
      2. 3.4.2 Start-up under Full Load Conditions
        1. 3.4.2.1 225V Input Voltage
        2. 3.4.2.2 350V Input Voltage
        3. 3.4.2.3 450V Input Voltage
  9. 4Trademarks

400V Input Voltage

Voltage [V] Current [A] Power [W] Voltage [V] Current [A] Power [W] Losses [W] Efficiency [%]
400.300 0.785 314.316 47.570 6.241 296.884 17.431 94.5
400.300 0.633 253.350 47.590 4.998 237.855 15.495 93.9
400.300 0.510 204.273 47.610 3.994 190.154 14.119 93.1
400.500 0.386 154.513 47.600 2.989 142.276 12.237 92.1
400.600 0.266 106.359 47.610 2.003 95.363 10.996 89.7
400.600 0.143 57.286 47.610 1.000 47.591 9.695 83.1