SLUUD39B May   2024  – November 2024 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

1.3.1 U1 Component Selection

The UCC33421-Q1 is the default IC used in the UCC33421EVM-092 but any of the alternate versions listed in Table 1-1 can be used for evaluation. Each of the component versions listed in Table 1-1 are pin-to-pin and BOM-to-BOM compatible

Table 1-2 UCC334x1-Q1 Devices
General Part Number Orderable Part Number Input Voltage/Output Voltage/Isolation
UCC33421-Q1 UCC33421QDHARQ1 4.5V-5.5V/5.0V/5kVRMS
UCC33421 UCC33421DHAR 4.5V-5.5V/5.0V/5kVRMS
UCC33411-Q1 UCC33411QDHARQ1 4.5V-5.5V/3.3V/5kVRMS
UCC33411 UCC33411DHAR 4.5V-5.5V/3.3V/5kVRMS

If IC replacement is required, TI recommends to always use best practice soldering techniques which can include taking appropriate ESD precautions and having qualified personnel, skilled at surface mount soldering and board level rework.