SLUUCV2A October   2023  – November 2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specifications
    4. 1.4 Device Information
    5.     General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  7. 2Hardware
    1. 2.1 Test Setup
      1. 2.1.1 Test Equipment
      2. 2.1.2 Recommended Test Setup
    2. 2.2 Using the EVM with UCC256602
    3. 2.3 Using the EVM with UCC256603
    4. 2.4 Test Points
    5. 2.5 Terminals
    6. 2.6 Test Procedure
      1. 2.6.1 Equipment Shutdown
  8. 3Implementation Results
    1. 3.1 Performance Data and Typical Characteristic Curves
      1. 3.1.1  UCC25660EVM-064 Standalone Standby and Light Load Power
      2. 3.1.2  Efficiency, Load Regulation, Switching Frequency vs Output Current
      3. 3.1.3  Startup
      4. 3.1.4  Enhanced ZCS Avoidance During Soft Start
      5. 3.1.5  Thermal Image
      6. 3.1.6  Output Voltage Ripple
      7. 3.1.7  Load Transient Response
      8. 3.1.8  Loop Response
      9. 3.1.9  Steady State
      10. 3.1.10 X-Capacitor Discharge
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials
  10. 5Additional Information
    1.     Trademarks
  11. 6Revision History

2.6 Test Procedure

Use the following steps for the test procedure:

  1. Refer to Section 2.1.2 for basic setup. The required equipment for this measurement is listed in Section 2.1.1.
  2. Before making electrical connections, visually check the board to make sure there are no suspected spots of damage.
  3. Keep the High Voltage DC voltage source output off. Connect this DC source to J1 (+) and J2 (-). This DC voltage source must be isolated and meet the IEC 60950 requirement. Set the DC output voltage within the range specified in Table 2-2, between 365 VDC and 410 VDC; set the DC source current limit to 1 A.
    CAUTION: The board has no fuse installed and relies on the external voltage source current limit to verify circuit protection.
  4. Keep the AC voltage source output off. Connect the source with AC_neutral to J3-1, AC_earth to J3-2, and AC_line to J3-3. Isolate the AC voltage source and meet the IEC 60950 requirement. Set the AC output voltage and frequency within the range specified in Table 2-2, between 85 and 265 VAC and 47 to 63 Hz. Set the AC source current limit to 200 mA.
  5. Connect an electronic load set to either constant-current mode or constant-resistance mode. The load range is from 0 to 15 A.
  6. If the load does not have a current or a power display, TI recommends inserting a current meter between the output voltage and the electronic load.
  7. Connect a voltage meter to Vout and SGND1/SGND2 to monitor the output voltage.
  8. Turn on the AC source output.
  9. Turn on the DC source output.