SLVU641A January   2012  – November 2021 TPS54120

 

  1.   Trademarks
  2. 1Background
  3. 2Setup
    1. 2.1 Input and Output Connections and Jumper Descriptions
    2. 2.2 Modifications
      1. 2.2.1 SW Output Voltage Setpoint
      2. 2.2.2 LDO Output Voltage Setpoint
      3. 2.2.3 Switcher Slow-Start Time
      4. 2.2.4 LDO Start-Up
    3. 2.3 Equipment Interconnect
  4. 3Operation
  5. 4Test Results
    1. 4.1 Output Voltage Ripple
    2. 4.2 Output Noise
    3. 4.3 Output Turn-On
    4. 4.4 Load Transient
    5. 4.5 Efficiency
    6. 4.6 Thermal Characteristic
  6. 5Board Layout
    1. 5.1 Layout Description
  7. 6Schematic
  8. 7Bill of Materials
  9. 8Revision History

7 Bill of Materials

Table 7-1 presents the bill of materials for the TPS54120 evaluation board.

Table 7-1 Bill of Materials
COUNTREFDESVALUEDESCRIPTIONSIZEPART NUMBERMFR
5C1, C10, C12–C140.1 μFCapacitor, Ceramic, 16 V, X7R, 10%0603STDSTD
1C11100 pFCapacitor, Ceramic, 50 V, C0G, 5%0603STDSTD
1C1510 μFCapacitor, Ceramic, 6.3 V, X7R, 10%1206STDSTD
1C24.7 μFCapacitor, Ceramic, 10 V, X7R, 10%1206STDSTD
2C3, C70.01 μFCapacitor, Ceramic, 25 V, X7R, 10%0603STDSTD
1C4100 μFCapacitor, Ceramic, 6.3 V, 20%, X5R1812STDSTD
1C510 μFCapacitor, Ceramic, 25 V, X5R, 10%0805STDSTD
1C6330 pFCapacitor, Ceramic, 25 V, X7R, 10%0603STDSTD
1C80.047 μFCapacitor, Ceramic, 25 V, X7R, 10%0603STDSTD
1C947 μFCapacitor, Ceramic, 6.3 V, X5R, 20%1210STDSTD
6J1-4, J6-7PEC02SAANHeader, Male 2-pin, 100-mil spacing0.100 inch × 2PEC02SAANSullins
0J5, J8OpenConnector, SMT Straight, Jack Receptacle0.250 SQ142-0711-201Johnson
1JP1PEC03SAANHeader, Male 3-pin, 100-mil spacing0.100 inch × 3PEC03SAANSullins
2JP2–3PEC02SAANHeader, Male 2-pin, 100-mil spacing0.100 inch × 2PEC02SAANSullins
1L122 μHInductor, SMT, Power Choke 1.1 A, ±20%483874408943220WE
1R130.9 kResistor, Chip, 1/16W, 1%0603StdStd
2R2, R610.0 kResistor, Chip, 1/16W, 1%0603StdStd
1R3100 kResistor, Chip, 1/16W, 1%0603StdStd
1R42.20 kResistor, Chip, 1/16W, 1%0603StdStd
1R541.2 KResistor, Chip, 1/16W, 1%0603StdStd
5TP1-55002Test Point, White, Thru Hole Color Keyed0.100 × 0.100 inchKeystone
1U1TPS54120RGYIC, Integrated SWITCHER and LDO Low Noise 1-A Power SupplyQFN-24TPS54120RGYTI
3—Shunt, 100-mil, Black0.100929950-003M
1PCB, 2.0" × 1.5" × 0.031"PWR103Any