SLVUAX8B November   2016  – August 2021 TPS54824

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Evaluating the TPS54824EVM-779 at –40°C
    4. 1.4 Modifications
      1. 1.4.1 Output Voltage Setpoint
      2. 1.4.2 Adjustable UVLO
      3. 1.4.3 Example Component Values For Common Output Voltages
  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 Powering Down
    11. 2.11 Start-Up Into Pre-Bias
    12. 2.12 Hiccup Mode Current Limit
  4. 3Board Layout
    1. 3.1 Layout
  5. 4Schematic and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Bill of Materials
  6. 5Revision History

1.4.3 Example Component Values For Common Output Voltages

Table 1-3 shows recommended modifications to the EVM for evaluating different output voltages. Depending on the load step response requirements in the application, the output capacitors may need to be different from the values shown in this table. More or less output capacitance can be used. If the output capacitors are changed, the compensation may need to be adjusted. Additionally, if a different fSW is needed, the inductance value (L) may need to be changed. The TPS54824 datasheet equations or WEBENCH can be used to calculate the output capacitor value, compensation, fSW, and inductance.

Table 1-3 Recommended Component Value Changes For Common Output Voltages
VOUT (V)fSW (kHz)RT (R7) (kΩ)L (µH)COUT (µF)RFBT (R8) (kΩ)RC (R5) (kΩ)CC (C18) (nF)CP (C17) (pF)CFF (C19) (pF)
15001001.04x 474.023.3210180470
1.85001001.54x 4712.15.365.6100150
3.35001002.22x 4727.43.321018068