SLUUCI9A January   2022  – December 2022 UCC28781

 

  1.   Abstract
  2.   Trademarks
  3. 1 Introduction
  4. 2 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  5. 3 Description of EVM
  6. 4 Electrical Performance Specifications of EVM
  7. 5 Schematic Diagram of EVM
  8. 6 Operating the EVM from a DC or an AC Source
    1. 6.1 Typical Applications
    2. 6.2 Using the EVM with a DC Voltage Source
    3. 6.3 Using the EVM with an AC Voltage Source
  9. 7 Test Set-ups
    1. 7.1 Test Set-up Requirements
      1. 7.1.1 Test Set-up Requirements for DC Input
      2. 7.1.2 Test Set-up Requirements for AC Input
    2. 7.2 Test Set-up Diagrams
    3. 7.3 Terminals and Test Points
  10. 8 Performance Data and Typical Characteristic Curves
    1. 8.1 Table of Efficiency Measurements with DC Input
    2. 8.2 Table of Efficiency Measurements with AC Input
    3. 8.3 Efficiency Graphs with DC Input Voltage (Typical Results)
    4. 8.4 Switching Frequencies in Various Operating Modes
    5. 8.5 Key Switching Waveforms and Operating Mode Load Current
    6. 8.6 Thermal Images at Full Load (15 V, 4.0 A) with DC and AC Inputs
  11. 9 Transformer Details
  12. 10EVM Assembly and Layout
  13. 11List of Materials
  14. 12Revision History

8.1 Table of Efficiency Measurements with DC Input

Table 8-1 Efficiency Test Data of 15-V Output with DC Input
VIN (VDC) PIN (W) VOUT (V) IOUT (A) IOUT(%) Efficiency
at IOUT		 Efficiency
4pt-Average		 Average Switching Frequency
at Full Load
500
IFL_HI range		 63.990 14.090 4.001 100% 0.9322 0.9050 170 kHz
48.464 14.915 3.002 75% 0.9239
32.991 14.919 2.003 50% 0.9058
17.462 14.925 1.004 25% 0.8581
7.484 14.930 0.405 10% 0.8082
375
IFL_HI range		 63.454 14.911 4.001 100% 0.9402 0.9234 165 kHz
47.820 14.917 3.003 75% 0.9368
32.377 14.921 2.003 50% 0.9231
16.762 14.928 1.003 25% 0.8936
6.999 14.933 0.405 10% 0.8634
250
IFL_HI range		 63.01 14.910 4.002 100% 0.9470 0.9354 154 kHz
47.36 14.920 3.002 75% 0.9458
31.89 14.925 2.002 50% 0.9370
16.44 14.928 1.004 25% 0.9118
6.95 14.934 0.405 10% 0.8711
250
IFL_LO range		 31.89 14.925 2.002 100% 0.9370 0.9185 221 kHz
24.11 14.928 1.500 75% 0.9287
16.44 14.928 1.004 50% 0.9118
8.34 14.938 0.501 25% 0.8965
3.65 14.940 0.204 10% 0.8354
150
IFL_LO range		 31.62 14.927 2.002 100% 0.9452 0.9315 190 kHz
23.79 14.930 1.500 75% 0.9414
16.14 14.931 1.004 50% 0.9291
8.23 14.934 0.502 25% 0.9105
3.47 14.938 0.200 10% 0.8624
50
IFL_LO range		 32.28 14.925 2.002 100% 0.9257 0.9271 86.2 kHz
23.94 14.930 1.500 75% 0.9357
15.98 14.933 1.004 50% 0.9384
8.25 14.935 0.502 25% 0.9085
3.51 14.939 0.204 10% 0.8685
For reference only: CoC Tier 2, 4pt-average efficiency ≥ 0.890 for 15 V, 60 W (at 230VRMS)
For reference only: CoC Tier 2, 10%-load efficiency ≥ 0.790 for 15 V, 60 W (at 230VRMS)