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

8.2 Table of Efficiency Measurements with AC Input

Table 8-2 Efficiency Test Data of 15-V Output with AC Input
VIN (VRMS)PIN (W)VOUT (V)IOUT (A)IOUT(%)Efficiency
at IOUT		Efficiency
4pt-Average		Average Switching Frequency
at Full Load
265
IFL_HI range		64.2414.9144.001100%0.93190.9150164 kHz
48.4619.9193.00275%0.9282
32.8614.9222.00250%0.9150
17.1314.0201.00325%0.8849
7.3114.9340.40410%0.8501
230
IFL_HI range		64.0614.9114.001100%0.93360.9213161 kHz
48.2314.9183.00275%0.9316
32.5914.9232.00250%0.9212
16.8314.9341.00325%0.8987
7.1214.9340.40510%0.8684
180
IFL_HI range		 64.13 14.909 4.003 100% 0.9320 0.9249 152 kHz
48.15 14.918 3.005 75% 0.9329
32.44 14.925 2.006 50% 0.9257
16.53 14.931 1.000 25% 0.9090
7.12 14.933 0.404 10% 0.8599
180
IFL_LO range		 32.44 14.925 2.006 100% 0.9257 0.9096 217 kHz
24.51 14.929 1.501 75% 0.9181
16.53 14.931 1.000 50% 0.9090
8.60 14.933 0.505 25% 0.8858
3.88 14.936 0.208 10% 0.8227
115
IFL_LO range		 32.27 14.926 2.002 100% 0.9271 0.9150 198 kHz
24.20 14.931 1.501 75% 0.9241
16.43 14.932 1.003 50% 0.9135
8.42 14.936 0.502 25% 0.8953
3.63 14.938 0.204 10% 0.8480
90
IFL_LO range		32.4814.9272.003100%0.92120.9121162 kHz
24.3414.9291.50175%0.9218
16.5014.9321.00550%0.9105
8.4114.9350.50325%0.8949
3.6314.9390.20510%0.8518
For reference: CoC Tier 2, 4pt-average efficiency ≥ 0.890 for 15 V, 60 W (at 230VRMS)
For reference: CoC Tier 2, 10%-load efficiency ≥ 0.790 for 15 V, 60 W (at 230VRMS)