SLUUD60B October   2024  – May 2025 UCG28826

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5. 1.5 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  8. 2Hardware
    1. 2.1 Additional Images
      1. 2.1.1 Using the EVM on a Load with USB-C PD Communication
      2. 2.1.2 Using the EVM on a Load Without USB-C PD Communication
  9. 3Implementation Results
    1. 3.1 Electrical Performance Specifications
    2. 3.2 Test Setup
      1. 3.2.1 Test Setup Requirements
      2. 3.2.2 Test Setup Diagram
      3. 3.2.3 Test Points
    3. 3.3 Performance Data and Typical Characteristic Curves
      1. 3.3.1  Efficiency Result of 4-Point Average on 20VOUT
      2. 3.3.2  Efficiency Result of 4-Point Average at 15VOUT
      3. 3.3.3  Efficiency Result of 4-Point Average at 9VOUT
      4. 3.3.4  Efficiency Result of 4-Point Average at 5VOUT
      5. 3.3.5  Efficiency Typical Results
      6. 3.3.6  Output Characteristics
      7. 3.3.7  Key Switching Waveforms
      8. 3.3.8  Switching Frequency vs Load
      9. 3.3.9  Output Ripple Voltage
      10. 3.3.10 Load Transient Response
      11. 3.3.11 Line Transient Response
      12. 3.3.12 Surge Test
      13. 3.3.13 Short Term Overload Operation
      14. 3.3.14 CCM operation
      15. 3.3.15 EN55022 Class B Conducted EMI Test Result
      16. 3.3.16 Thermal Images at Full Load (20V and 3.25A)
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Transformer Details
      1. 4.3.1 RLTI-1464 (RENCO)
    4. 4.4 Bill of Materials
  11. 5Appendix - Efficiency
    1. 5.1 Efficiency Result of 4-Point Average on 20VOUT
    2. 5.2 Efficiency Result of 4-Point Average on 15VOUT
    3. 5.3 Efficiency Result of 4-Point Average on 9VOUT
    4. 5.4 Efficiency Result of 4-Point Average on 5VOUT
    5. 5.5 Efficiency Typical Results
  12. 6Additional Information
    1.     Trademarks
  13. 7Revision History

3.3.13 Short Term Overload Operation

The EVM is capable of supporting short term overload without damage, safety issues or triggering protection. The output voltage drops to 18V when peak short term overload of 6.5A is applied for 2ms (Figure 3-50) and also when 7.32A is applied for 1ms (Figure 3-49). The results are checked at 230Vac and 100Vac.
VSW = PINK, Load Current = GREEN, VOUT = BLUE, FB = YELLOW

The output votage drops to approximatly 18.2V

VSW = PINK, Load Current = GREEN, VOUT = BLUE, FB = YELLOW

The output votage drops to approximatly 18.2V

UCG28826EVM-093 VIN=100Vac (2.25x rated current for 1ms, 0.9x rated current for 9ms)Figure 3-49 VIN=100Vac (2.25x rated current for 1ms, 0.9x rated current for 9ms). VSW = PINK, Load Current = GREEN, VOUT = BLUE, FB = YELLOW

The output votage drops to approximatly 18.2V

VSW = PINK, Load Current = GREEN, VOUT = BLUE, FB = YELLOW

The output votage drops to approximatly 18.2V

UCG28826EVM-093 VIN=100Vac (2x rated current for 2ms, 0.9x rated current for 18ms)Figure 3-50 VIN=100Vac (2x rated current for 2ms, 0.9x rated current for 18ms). VSW = PINK, Load Current = GREEN, VOUT = BLUE, FB = YELLOW

The output votage drops to approximatly 18.2V