SNVU792 September   2021 LM5152-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
  4. 3Test Setup and Procedures
    1. 3.1 Equipment
  5. 4Test Results
    1. 4.1 Efficiency
    2. 4.2 Loop Response
    3. 4.3 Thermal Performance
    4. 4.4 Typical Waveforms
  6. 5PCB Layers
  7. 6Schematic
  8. 7Bill of Materials

3.1 Equipment

The following test equipment is needed to test the LM5152EVM-BST as shown in Figure 3-1.

  • Power supply: The input voltage source (VIN) must be a variable supply with minimum efficiency level V. The power supply must source 2.5 V to 36 V and be able to supply more than 20 A of current. TI recommends using an external power supply that complies with applicable regional safety standards such as (by example) the following:
    • UL
    • CSA
    • VDE
    • PSE
  • Electronic load: Load connected to the output of the evaluation module. The electronic load must be able to handle up to 36 V and dissipate 100 W at 8.5 V.
  • Multimeters: For DC measurements
    • Voltmeter 1 (VIN): Capable of measuring the input voltage range up to 36 V
    • Voltmeter 2 (VOUT): Capable of measuring output voltage of 36 V
    • Ammeter 1 (IIN): Capable of 20-A DC measurement. A shunt resistor can also be used to measure the input current.
    • Ammeter 2 (IOUT): Capable of at least 6-A DC measurement
  • Oscilloscope: Minimum of 20-MHz bandwidth and 10x probes