SLVU768A August   2012  – October 2021 TPS542941

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output Voltage Setpoint
    2. 3.2 Output Filter and Closed-Loop Response
  5. 4Test Setup and Results
    1. 4.1 Input/Output Connections
    2. 4.2 Start-Up Procedure
    3. 4.3 Efficiency
      1. 4.3.1 Efficiency of Converter 1
      2. 4.3.2 Efficiency of Converter 2
    4. 4.4 Load Regulation
      1. 4.4.1 Load Regulation of Converter 1
      2. 4.4.2 Load Regulation of Converter 2
    5. 4.5 Line Regulation
      1. 4.5.1 Line Regulation Converter 1
      2. 4.5.2 Line Regulation Converter 2
    6. 4.6 Load Transient Response
      1. 4.6.1 Load Transient Response Converter 1
      2. 4.6.2 Load Transient Response Converter 2
    7. 4.7 Output Voltage Ripple
      1. 4.7.1 Output Voltage Ripple Converter 1
      2. 4.7.2 Output Voltage Ripple Converter 2
    8. 4.8 Input Voltage Ripple
    9. 4.9 Start-Up
      1. 4.9.1 Converter 1 Start-Up
      2. 4.9.2 Converter 2 Start-Up
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Schematic, Bill of Materials, and Reference
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
    3. 6.3 Reference
  8. 7Revision History

Bill of Materials

Table 6-1 Bill of Materials
CountRefDesValueDescriptionSizePart NumberManufacturer
1C111 µFCapacitor, ceramic, 16 V, X7R, 10%0603GRM188R71C105KA12Murata
4C1-2 C4-510 µFCapacitor, ceramic, 25 V, X7R, 10%1206GRM31CR71E106KA12Murata
0C12-13openCapacitor, ceramic, 50 V, X7R, 10%0603GRM188R71H104KA93Murata
4C14-1722 µFCapacitor, ceramic, 6.3 V, X7R, 10%1206GRM31CR70J226KE19Murata
0C18-19openCapacitor, ceramic, 6.3 V, X7R, 10%1206
0C20-21openCapacitor, ceramic, 50 V, X7R, 10%0603StdStd
4C3 C6-80.1 µFCapacitor, ceramic, 50 V, X7R, 10%00603GRM188R71H104KA93Murata
0C9-10openCapacitor, ceramic, 50 V, X7R, 10%0603StdStd
0D1-2openDiode, SchottkySMASTDSTD
1L12.2 µHInductor, power line, magnetic shielded, ±30%, 4.3 A6.9 × 7.2 mmSPM6530-2R2MTDK
1L21.5 µHInductor, power line, magnetic shielded, ±30%, 4.1 A6.9 × 7.2 mmSPM6530-1R5MTDK
1R173.2 kΩResistor, chip, 1/16W, 1%0603STDSTD
2R11-120 ΩResistor, chip, 1/16W, 5%0603STDSTD
2R13-1410.0 kΩResistor, chip, 1/16W, 1%0603STDSTD
2R2 R422.1 kΩResistor, chip, 1/16W, 1%0603STDSTD
1R321.5 kΩResistor, chip, 1/16W, 1%0603STDSTD
2R5-60 ΩResistor, chip, 1/16W, 1%0603STDSTD
2R7-8100 kΩResistor, chip, 1/16W, 1%0603STDSTD
0R9-10openResistor, chip, 1/16W, 1%0603STDSTD
1U1TPS542941PWPIC, 2A/3A, dual output fully synchronous buck converter with integrated FETTSSOPTPS542941PWPTI

C14-C19 must be replaced with capacitors which have a higher voltage rating when the output voltage is set above 4V.