SLUUD89 March   2025

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Safety Instructions
    2. 2.2 Header Information
    3. 2.3 Jumper Information
    4. 2.4 Interfaces
    5. 2.5 Test Points
  7. 3Software
  8. 4Implementation Results
    1. 4.1 Evaluation Setup
      1. 4.1.1 Ripple Measurement Setup
      2. 4.1.2 Loop Response Measurement
      3. 4.1.3 Precise Turn-on Voltage
    2. 4.2 Performance Data and Results
  9. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  10. 6Additional Information
    1. 6.1 Trademarks

4.1.1 Ripple Measurement Setup

The SMA connector, J6, is used to measure the output voltage ripple and transient response. Connect the SMA connector directly to the oscilloscope with a coaxial (coax) cable, instead of using a 10x oscilloscope probe, to achieve the best results. This action enables the use of the smallest V/div setting on the oscilloscope to view the ripple. The EVM contains a 49.9Ω resistor in series with the SMA connector to block reflections on the coax cable. Either the high-impedance or 50Ω terminated setting on the oscilloscope can be used.