SLVUCF1A September   2022  – October 2022 TPSM63610

 

  1.   Abstract
  2.   Trademarks
  3. 1High-Density EVM Description
    1. 1.1 Typical Applications
  4. 2Test Setup and Procedure
    1. 2.1 EVM Connections
    2. 2.2 EVM Setup
    3. 2.3 Test Equipment
    4. 2.4 Recommended Test Setup
      1. 2.4.1 Input Connections
      2. 2.4.2 Output Connections
    5. 2.5 Test Procedure
      1. 2.5.1 Line, Load Regulation and Efficiency
  5. 3Test Data and Performance Curves
    1. 3.1 Efficiency and Load Regulation Performance
    2. 3.2 Waveforms
    3. 3.3 Bode Plot
    4. 3.4 EMI Performance
  6. 4EVM Documentation
    1. 4.1 Schematic
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout
    4. 4.4 Multi-Layer Stackup
  7. 5Device and Documentation Support
    1. 5.1 Device Support
      1. 5.1.1 Development Support
        1. 5.1.1.1 Custom Design With WEBENCH® Tools
    2. 5.2 Documentation Support
      1. 5.2.1 Related Documentation
  8. 6Revision History

2.2 EVM Setup

  • Use the VIN S+ and VIN S– test points along with the VOUT S+ and VOUT S– test points located near the power terminal blocks as voltage monitoring points where voltmeters are connected to measure the input and output voltages, respectively. Do not use these sense terminals as the input supply or output load connection points. The PCB traces connected to these sense terminals are not designed to support high currents.
  • Header J3 provides access to the following test points:
    • VIN
    • EN
    • MODE
    • PG
    • VCC
    • SPSP
    The MODE test point provides a convenient location to connect an external clock signal. The power-good (PG) test point is available to monitor when a valid output voltage is present on the EVM. Refer to EVM Connections for specific information related to the various test points.
  • The VOUT SELECT header (J4) allows selection of either 3.3 V or 5 V. Before applying power to the EVM, make sure that the jumper is present and properly positioned for the intended output voltage. Always remove input power before changing the jumper settings.
  • The FSW SELECT header (J5) allows selection of a suitable switching frequency:
    • 400 kHz
    • 700 kHz
    • 1 MHz
    • 1.4 MHz
    • 2.2 MHz
    Before applying power to the EVM, make sure that the jumper is present and properly positioned for the intended switching frequency. Always remove input power before changing the jumper settings.