SLVU263A August   2008  – October 2021 TPS54231

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Set Point
  3. 2Test Setup and Results
    1. 2.1  Input / Output Connections
    2. 2.2  Efficiency
    3. 2.3  Output Voltage Load Regulation
    4. 2.4  Output Voltage Line Regulation
    5. 2.5  Load Transients
    6. 2.6  Loop Characteristics
    7. 2.7  Output Voltage Ripple
    8. 2.8  Input Voltage Ripple
    9. 2.9  Powering Up
    10. 2.10 Eco-mode Operation
    11. 2.11 Thermal Characteristics
  4. 3Board Layout
    1. 3.1 Layout
    2. 3.2 Estimated Circuit Area
  5. 4Schematic and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Bill of Materials
  6. 5Revision History

2.1 Input / Output Connections

The TPS54231EVM-372 is provided with input/output connectors and test points as shown in Table 2-1. A power supply capable of supplying 2 A must be connected to J1 through a pair of 20 AWG wires. The load must be connected to J4 through a pair of 20 AWG wires. The maximum load current capability must be 2 A. Wire lengths must be minimized to reduce losses in the wires. Test-point TP1 provides a place to monitor the VIN input voltages with TP2 providing a convenient ground reference. TP5 is used to monitor the output voltage with TP6 as the ground reference.

Table 2-1 EVM Connectors and Test Points
Reference DesignatorFunction
J1VIN (see Table 1-1 for VIN range)
J22-pin header for enable. Connect EN to ground to disable, open to enable.
J32-pin header for slow start monitor and GND.
J4VOUT, 3.3 V at 2 A maximum
TP1VIN test point at VIN connector
TP2GND test point at VIN
TP3PH test point
TP4Test point between voltage divider network and output. Used for loop response measurements.
TP5Output voltage test point at OUT connector
TP6GND test point at OUT connector