SNVU745A January   2021  – May 2021 TPS62901 , TPS62902 , TPS62903

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Performance Specification
    2. 1.2 Modifications
      1. 1.2.1 Input and Output Capacitors
      2. 1.2.2 Configurable Enable Threshold Voltage
      3. 1.2.3 SS/TR Capacitor
      4. 1.2.4 Feedforward Capacitor
      5. 1.2.5 MODE/S-CONF Resistor
      6. 1.2.6 Loop Response Measurement
  3. 2Setup
    1. 2.1 Input/Output Connector Descriptions
  4. 3Safety Instructions
  5. 4 Test Results
  6. 5 Board Layout
  7. 6Schematic and Bill of Materials
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
  8. 7Revision History

1.2 Modifications

The printed-circuit board (PCB) for this EVM is designed to accommodate some modifications by the user. Additional input and output capacitors can be added. Also, the input voltage at which the IC turns on can be adjusted with two resistors, the soft start time can be changed, the output voltage can track an applied voltage, a feed-forward capacitor can be added, and the switching frequency, output discharge setting, MODE setting, and output voltage setting configuration can be changed. Finally, the loop response can be measured. See the TPS62903, 3-V to 17-V, Low IQ Buck Converter in 1.5 mm × 2 mm QFN Package data sheet for details of the various settings.