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

2.4 Test Points

Table 3-3 lists the EVM test points.

Table 2-1 Test Points
Test Points Description
Vin Input voltage positive terminal
HG Primary-side high side MOSFET gate, Q1
SGND1 Secondary-side ground
SGND2 Secondary-side ground
SW Primary-side switch node, or the intersection of Q1 and Q3
VCC Controller Supply input
LG Primary-side low side MOSFET gate, Q3
TP8 Primary-side ground
TP9 Primary-side ground
Vout Output voltage positive terminal
Inj Small signal injection terminal
I_opt Feedback current measurement
HV High-voltage start pin
HV_diode High-voltage start pin
5VP Regulated 5-V bias
BLK Input voltage sensing
L AC line
N AC neutral
LL Light-load burst mode thresholds
ISNS Resonant current sense
OVP_OTP Bias winding voltage sense/External over temperature protection
TSET On time min and max programming/ PFC on/off logic