SLUUD39C May   2024  – August 2025

 

  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 Performance Data
      1. 3.1.1 Efficiency Data
      2. 3.1.2 Regulation Data
      3. 3.1.3 Startup Waveforms
      4. 3.1.4 Inrush Current
      5. 3.1.5 AC Ripple Voltage
      6. 3.1.6 Load Transient
      7. 3.1.7 VCC Short-Circuit
      8. 3.1.8 Thermal Performance
  8. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 Assembly and Printed Circuit Board (PCB)
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Revision History

Description

The UCC33421EVM-092 is intended to allow designers to evaluate the performance and capabilities of the UCC33xx1 family of automotive and industrial devices. UCC33421 is an isolated DC/DC converter module able to deliver 1.5W with 5kVrms of isolation in a very small and compact DHA-16 package (5.85mm x 7.50mm x 2.65mm), reducing footprint and providing a high power density. UCC334x1 devices can operate from 4.5V to 5.5V and UCC330x1 from 3.0V to 5.5V at the input side. UCC33x21 devices can regulate the secondary side to 5V or 5.5V and UCC33x11 to 3.3V or 3.7V by configuring the SEL pin. This EVM demonstrates typical isolated bias supply voltages used in automotive and industrial applications.