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

6.2 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.