SLVUCK9A august   2023  – august 2023 TPS562203 , TPS562206

 

  1.   1
  2.   Description
  3.   Trademarks
  4. 1 Features
  5. 2 Applications
  6. 3 Hardware Image
  7. 4 Evaluation Module Overview
    1. 4.1 Introduction
    2. 4.2 Kit Contents
    3. 4.3 Reference
    4. 4.4 Device Information
  8. 5 Performance Specification Summary
  9. 6 Output Voltage Setpoint
  10. 7 Test Setup and Results
    1. 7.1 Input, Output Connections
    2. 7.2 Start-Up Procedure
    3. 7.3 Efficiency
    4. 7.4 Load Regulation
    5. 7.5 Line Regulation
    6. 7.6 Load Transient Response
    7. 7.7 Start-Up
    8. 7.8 Shutdown
    9. 7.9 Output Voltage Ripple
  11. 8 Hardware Design Files
    1. 8.1 Schematic
    2. 8.2 Layout
    3. 8.3 Bill of Materials
  12. 9 Reference
  13. 10Revision History

6 Output Voltage Setpoint

The output voltage of the EVM can be selected by changing the value of resistor R4 (RUPPER) and R6 (RLOWER). The value of R4 for a specific output voltage can be calculated using Equation 1. The output voltage is set with a resistor divider from the output node to the FB pin. TI recommends using 1% tolerance or better divider resistors. Start with a 10 kΩ or 30 kΩ for R6 (RFBB) and use Equation 1 to calculate R4 (RFBT) . To improve efficiency at light loads, consider using larger value resistors. If the values are too high, the regulator is more susceptible to noise and voltage errors from the FB input current are noticeable.

Equation 1. V OUT = 0 . 6 × 1 + R 4 R 6