SLUUD39B May   2024  – November 2024 UCC33411-Q1 , UCC33421-Q1

 

  1.   1
  2.   Description
  3.   Features
    1.     Applications
  4.   5
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Device Information
      1. 1.3.1 U1 Component Selection
      2. 1.3.2 UCC33421-Q1 Pin Definition
    4. 1.4 Specification
  6. 2Hardware
    1. 2.1 EVM Setup and Operation
      1. 2.1.1 Recommended Test Equipment
      2. 2.1.2 External Connections for Easy Evaluation
      3. 2.1.3 Powering the EVM
        1. 2.1.3.1 Power on for Start-up
        2. 2.1.3.2 Power off for Shutdown
      4. 2.1.4 EVM Test Points
      5. 2.1.5 Oscilloscope Probes: Probing the EVM
  7. 3Implementation Results
    1. 3.1 Schematic
    2. 3.2 Performance Data
      1. 3.2.1 Efficiency Data
      2. 3.2.2 Regulation Data
      3. 3.2.3 Startup Waveforms
      4. 3.2.4 Inrush Current
      5. 3.2.5 AC Ripple Voltage
      6. 3.2.6 Load Transient
      7. 3.2.7 VCC Short-Circuit
      8. 3.2.8 Thermal Performance
  8. 4Hardware Design Files
    1. 4.1 Assembly and Printed Circuit Board (PCB)
    2. 4.2 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Revision History

3.2.8 Thermal Performance

UCC33421EVM-092 UCC33421-Q1 VINP=5.0V, VCC=5.0V, Iout=300mA, Pout=1.5W, TA=25°C Figure 3-24 UCC33421-Q1 VINP=5.0V, VCC=5.0V, Iout=300mA, Pout=1.5W, TA=25°C
UCC33421EVM-092 UCC33411-Q1 VINP=5.0V, VCC=3.3V, Iout=300mA, Pout=1W, TA=25°C Figure 3-25 UCC33411-Q1 VINP=5.0V, VCC=3.3V, Iout=300mA, Pout=1W, TA=25°C
UCC33421EVM-092 UCC33421-Q1 VINP=5.0V, VCC=5.0V, Iout=150 mA, Pout=0.75W, TA=25°C Figure 3-26 UCC33421-Q1 VINP=5.0V, VCC=5.0V, Iout=150 mA, Pout=0.75W, TA=25°C
UCC33421EVM-092 UCC33411-Q1 VINP=5.0V, VCC=3.3V, Iout=150 mA, Pout=0.5W, TA=25°C Figure 3-27 UCC33411-Q1 VINP=5.0V, VCC=3.3V, Iout=150 mA, Pout=0.5W, TA=25°C
UCC33421EVM-092 UCC33421-Q1 VINP=5.0V, VCC=5.0V, Iout=0mA, Pout=0W, TA=25°C Figure 3-28 UCC33421-Q1 VINP=5.0V, VCC=5.0V, Iout=0mA, Pout=0W, TA=25°C
UCC33421EVM-092 UCC33411-Q1 VINP=5.0V, VCC=3.3V, Iout=0mA, Pout=0W, TA=25°C Figure 3-29 UCC33411-Q1 VINP=5.0V, VCC=3.3V, Iout=0mA, Pout=0W, TA=25°C

Note: The calibration of the thermal camera set the emissivity used on the thermal performance pictures.