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

3.1.9 Steady State

The following waveforms shows the voltage across the 10kohm(I_OPT), voltage across the resonant current sense resistor (ISNS), switch node voltage (SW) and low side gate voltage (LO) with 115 VAC, 60 Hz applied to the AC input and 390 VDC applied to the DC input. Figure 4-10, Figure 4-11, and Figure 4-12 shows the waveforms during normal switching and high frequency burst mode and low frequency burst mode respectively.

GUID-20231009-SS0I-9G4D-M9SK-GJGLS2FTVBQ2-low.svg Figure 3-10 Steady State Waveforms at 15 A Load (Ch1= ISNS; Ch2 = LO; Ch3 = SW; Ch4 = I_OPT)
GUID-20231009-SS0I-SXN5-6ZKC-QWGGND9SDKXK-low.svg Figure 3-11 Steady State Waveforms at 1 A Load (Ch1= ISNS; Ch2 = LO; Ch3 = SW; Ch4 = I_OPT)
GUID-20231009-SS0I-WKGW-WZ7T-V9K4QTTB1PDN-low.svg Figure 3-12 Steady State Waveforms at 0 A (Ch1= ISNS; Ch2 = LO; Ch3 = SW; Ch4 = I_OPT)