SLVUCF7 March   2022 TLVM13660

 

  1.   Trademarks
  2. 1High-Density EVM Description
    1. 1.1 Typical Applications
    2. 1.2 Features and Electrical Performance
  3. 2EVM Performance Specifications
  4. 3EVM Photo
  5. 4Test Setup and Procedure
    1. 4.1 EVM Connections
    2. 4.2 EVM Setup
    3. 4.3 Test Equipment
    4. 4.4 Recommended Test Setup
      1. 4.4.1 Input Connections
      2. 4.4.2 Output Connections
    5. 4.5 Test Procedure
      1. 4.5.1 Line/Load Regulation and Efficiency
  6. 5Test Data and Performance Curves
    1. 5.1 Efficiency and Load Regulation Performance
    2. 5.2 Waveforms
    3. 5.3 Bode Plot
    4. 5.4 Thermal Performance
    5. 5.5 EMI Performance
  7. 6EVM Documentation
    1. 6.1 Schematic
    2. 6.2 List of Materials
    3. 6.3 PCB Layout
    4. 6.4 Assembly Drawings
    5. 6.5 Multi-Layer Stackup
  8. 7Device and Documentation Support
    1. 7.1 Device Support
      1. 7.1.1 Development Support
        1. 7.1.1.1 Custom Design With WEBENCH® Tools
    2. 7.2 Documentation Support
      1. 7.2.1 Related Documentation

4.5.1 Line/Load Regulation and Efficiency

  • Set up the EVM as described in Section 4.
  • Set load to constant resistance or constant current mode to sink 0 A.
  • Increase the input source voltage from 0 V to 24 V; use voltmeter 1 to measure the input voltage.
  • Increase the current limit of the input supply to 6 A.
  • Use voltmeter 2 to measure the output voltage, VOUT, and vary the load current from 0 A to 6 A DC; VOUT should remain within the load regulation specification.
  • Set the load current to 3 A (50% rated load) and vary the input source voltage from 6 V to 36 V; VOUT should remain within the line regulation specification.
  • Set the load current to 6 A (100% rated load) and measure the efficiency at typical input voltages (12 V, 24 V, and 28 V).
  • Decrease the load to 0 A. Decrease the input source voltage to 0 V.
CAUTION:

Extended operation at high output current can raise component temperatures above 55°C. To avoid risk of a burn injury, do not touch the components until they have cooled sufficiently after disconnecting power. Review the thermal performance plots for more detail.