SLVUDN1 December   2025

 

  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 Image
      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 of UCG28824EVM-124
      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 at 24-Vout
      2. 3.3.2  Efficiency Result of 4-Point Average on 20VOUT
      3. 3.3.3  Efficiency Result of 4-Point Average at 15VOUT
      4. 3.3.4  Efficiency Result of 4-Point Average at 12-Vout
      5. 3.3.5  Efficiency Result of 4-Point Average at 9VOUT
      6. 3.3.6  Efficiency Result of 4-Point Average at 5VOUT
      7. 3.3.7  Efficiency Typical Results
      8. 3.3.8  Output Characteristics
      9. 3.3.9  Key Switching Waveforms
      10. 3.3.10 Switching Frequency versus Load
      11. 3.3.11 Output Ripple Voltage
      12. 3.3.12 Load Transient Response
      13. 3.3.13 Line Transient Response
      14. 3.3.14 Short Term Overload Operation
      15. 3.3.15 CCM operation
      16. 3.3.16 CISPR32 Class B Conducted EMI Test Result
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Transformer Details
      1. 4.3.1 ATQ18-T-325UH-W3-A
    4. 4.4 Bill of Materials
  11. 5Additional Information
    1.     Trademarks

3.2.1 Test Setup Requirements

Safety: This evaluation module is not encapsulated and there are accessible voltages that are greater than 50VDC.

Isolation Input Transformer: An appropriately rated 1:1 isolation transformer shall be used on the inputs to this EVM and be constructed in a manner in which the primary winding are separated from the secondary windings by reinforced insulation, double insulation, or a screen connected to the protective conductor terminal.

UCG28824EVM-124
UCG28824EVM-124
UCG28824EVM-124
WARNING:
  • If the user is not trained in the proper safety of handling and testing power electronics, then please do not test this evaluation module.
  • While the EVM is energized, never touch the EVM or the electrical circuits, as the EVM or the electrical circuits can be at high voltages capable of causing electrical shock hazard.
  • Caution: Hot surface. Contact can cause burns. Do not touch!
  • Read this user's guide thoroughly before making test.

Voltage Source: Isolated AC source or variable AC transformer rated for atleast 264VRMS and capable of handling 100W power level.

Voltmeter: Digital voltage meter

Power Analyzer: Capable of measuring 1mW to 100W of input power and capable of handling 264VRMS input voltage. Some power analyzers require a precision shunt resistor for measuring input current to measure input power of 5W or less. Please read the power analyzer’s user manual for proper measurement setups for full power and for stand-by power.

Oscilloscope:

  • 4 Channel, 500MHz bandwidth.
  • Probes capable of handling 600V.

Output Load: Resistive or electronic load capable of handling 130W at 20V.

Recommended Wire Gauge: Insulated 22AWG to 18AWG.

UCG28824EVM-124
WARNING:

Caution: Do not leave EVM powered when unattended.