SLVU336A November   2009  – October 2021 TPS54226

 

  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  Start-Up Procedure
    3. 2.3  Efficiency
    4. 2.4  Load Regulation
    5. 2.5  Line Regulation
    6. 2.6  Load Transient Response
    7. 2.7  Output Voltage Ripple
    8. 2.8  Input Voltage Ripple
    9. 2.9  Start-Up
    10. 2.10 Switching Frequency
  4. 3Board Layout
    1. 3.1 Layout
  5. 4Schematic, Bill of Materials, and Reference
    1. 4.1 Schematic
    2. 4.2 Bill of Materials
    3. 4.3 Reference
  6. 5Revision History

2.1 Input/Output Connections

The TPS54226EVM-539 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 J2 through a pair of 20 AWG wires. The maximum load current capability is 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. TP8 is used to monitor the output voltage with TP9 as the ground reference.

Table 2-1 Connection and Test Points
REFERENCE DESIGNATORFUNCTION
J1VIN (see Table 1-1 for VIN range)
J2VOUT, 1.05 V at 2 A maximum
JP1EN control. Connect EN to OFF to disable, connect EN to ON to enable.
TP1VIN test point at VIN connector
TP2GND test point at VIN
TP3EN test point
TP4VCC test point
TP5Analog ground test point
TP6Switch node test point
TP7Power good test point
TP8Output voltage test point
TP9Ground test point at output connector