SNVU737A December   2020  – December 2021 LM5123-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Applications
    2. 1.2 Features
  3. 2EVM Setup
    1. 2.1 EVM Characteristics
    2. 2.2 EVM Connectors and Test Points
    3. 2.3 EVM Configurations
      1. 2.3.1 Output Voltage Tracking
  4. 3Test Setup and Procedures
    1. 3.1 Equipment
  5. 4Test Results
    1. 4.1 Efficiency
    2. 4.2 Load Regulation
    3. 4.3 Thermal Performance
    4. 4.4 Start-up Waveforms
    5. 4.5 Steady State Operation
    6. 4.6 Load Transient Response
    7. 4.7 Output Voltage Tracking
  6. 5PCB Layers
  7. 6Schematic
  8. 7Bill of Materials
  9. 8Revision History

3.1 Equipment

The following test equipment is needed to test the LM5123EVM-BST as shown in Figure 3-1.

  • Power supply: The input voltage source (VIN) should be a variable supply. The power supply should source 7-V to 36-V and be able to supply more than 30-A of current.

  • Electronic Load: Load connected to the output of the evaluation module. The electronic load should be able to dissipate 200-W at 24-V.

  • Multimeters: For DC measurements

    • Voltmeter 1 (VIN): Capable of measuring the input voltage range up to 18-V
    • Voltmeter 2 (VOUT): Capable of measuring output voltage of 24-V
    • Ammeter 1 (IIN): Capable of 30-A DC measurement. A shunt resistor may also be used to measure the input current
    • Ammeter 2 (IOUT): Capable of at least 10-A DC measurement
  • Oscilloscope: minimum of 20-MHz bandwidth and 10x probes.