SLUUCZ9D January   2024  – February 2025

 

  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 Device Information
      1. 1.3.1 U1 Component Selection
      2. 1.3.2 UCC33420-Q1 Pin Definition
    4. 1.4 Specification
  7. 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
      4. 2.1.4 EVM Test Points
      5. 2.1.5 Oscilloscope Probes: Probing the EVM
  8. 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
  9. 4Hardware Design Files
    1. 4.1 Assembly and Printed Circuit Board (PCB)
    2. 4.2 Bill of Materials (BOM)
  10. 5Additional Information
    1. 5.1 Trademarks
  11. 6Revision History

2.1.4 EVM Test Points

Table 2-1 describes the various EVM test points, allowing easy access for connecting oscilloscope probes, DVM test leads and wire connections to lab test equipment as outlined in Section 2.1.1. Maintain separation between the primary side, GNDP, and secondary side, GNDS. Ensure that primary-side test points are not referenced to GNDS through improper test equipment insertion. Likewise, secondary-side test points are not to be referenced to GNDP through improper test equipment insertion.

Table 2-1 Input, Output, Test Point (I/O/TP) Description
Pin I/O/TP Color Description Min Typ Max Unit
J1 I Green VINP, primary input voltage. 4.5 5.0 5.5 V
J2:1-2 I Black EN, on 0 V
J2:2-3 I Black EN, off 0 VBIAS 5.5 V
J4:1-2 O Black Selector 5.0V/3.3V output voltage. 0 5.7 V
J4:3-4 O Black Selector 5.5V/3.7V output voltage. 0 5.7 V
J3 O Green VCC, secondary output voltage. 0 5.7 V
TP1 TP Red VINP, primary input voltage test point. 4.5 5 5.5 V
TP2 TP Black GNDP, primary ground test point. 0 V
TP3 TP PCB VINP-to-GNDP, scope probe point. 4.5 5 5.5 V
TP4 TP Black GNDS, secondary ground test point. 0 V
TP5 TP Red VCC, secondary output voltage test point. 4.85 5 5.15 V
TP6 TP PCB VCC-to-GNDS, scope probe point. SEL 5.0V 4.85 5 5.15 V
SEL 5.5V 5.34 5.5 5.67 V