SLVUBZ2A September   2020  – December 2020 LM5127-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Applications
    2. 1.2 Features
  3. 2EVM Setup
    1. 2.1 EVM Characteristics
  4. 3EVM Photo
  5. 4Testing Procedures
    1. 4.1 EVM Connectors and Test Points
  6. 5Test Results
    1. 5.1 Efficiency
    2. 5.2 Thermal Performance
    3. 5.3 Steady State
    4. 5.4 Load Transient
    5. 5.5 Line Transient Responses
  7. 6Schematics, PCB Layers, and Bill of Materials
    1. 6.1 Schematics
    2. 6.2 PCB Layers
    3. 6.3 Bill of Materials
  8. 7EVM Modifications
    1. 7.1 Configure Channel 1 as a Buck Controller
      1. 7.1.1 Component Modifications
      2. 7.1.2 CFG/MODE Pin Selection
    2. 7.2 Configure Channel 2 and Channel 3 as a Dual Phase Buck Controller
      1. 7.2.1 Component Modifications
      2. 7.2.2 CFG/MODE Pin Selection
    3. 7.3 EVM Modification Test Setups
  9. 8Revision History

4 Testing Procedures

The following test equipment is needed to test the LM5127EVM-FLEX as shown in the Figure 4-1 and in the standard configuration according to Section 6.

  • Power supply: The input voltage source (VIN) should be a variable supply. The power supply should source 3 V to 42 V and be able to supply more than 30 A or current.
  • Electronic Load
    • Electronic load 2: Capable of at least 5 A at a voltage of 5 V
    • Electronic load 3: Capable of at least 7 A at a voltage of 3.3 V
  • Multimeters
    • Voltmeter 1 (VIN): Capable of measuring the input voltage range up to 42 V
    • Voltmeter 2 (VOUT2): Capable of measuring output voltage of 5 V
    • Voltmeter 3 (VOUT3): Capable of measuring output voltage of 3.3 V
    • Ammeter 1 (IIN): Capable of 30 A DC measurement. A shunt resistor may also be used to measure the input current.
    • Ammeter 2 (IOUT2): Capable of at least 5 A DC measurement
    • Ammeter 3 (IOUT3): Capable of at least a 7 A DC measurement
GUID-20200911-CA0I-8PCF-VDKH-HPT2FKHRDC7Q-low.gifFigure 4-1 EVM Test Setup