SLVU777A September   2012  – November 2021 TPS54020

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Setpoint
      2. 1.3.2 Slow-Start Time
      3. 1.3.3 Adjustable UVLO
      4. 1.3.4 Input Voltage Rails
  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 Transient
    6. 2.6  Control Loop Response
    7. 2.7  Output Voltage Ripple
    8. 2.8  Input Voltage Ripple
    9. 2.9  Start Up
    10. 2.10 Pre-Bias Start Up
    11. 2.11 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

4.2 Bill of Materials

Table 4-1 presents the bill of materials for the EVM.

Table 4-1 TPS54020EVM-082 Bill of Materials
CountRefDesValueDescriptionSizePart NumberMfr
1C168 µFCapacitor, aluminum, 25 V, ±20%0.260 × 0.276 inEEE-FK1E680PPanasonic
5C2, C5, C10, C13, C140.1 µFCapacitor, ceramic, 25 V, X7R, 10%603StdStd
2C3, C422 µFCapacitor, ceramic, 25 V, X5R, 10%1210StdStd
1C64.7 µFCapacitor, ceramic, 25 V, X5R, 10%805StdStd
3C7, C8, C9100 µFCapacitor, ceramic, 6.3 V, X5R, 20%1210StdStd
0C11820 pFCapacitor, ceramic, 50 V, X7R, 10%603StdStd
1C1222 nFCapacitor, ceramic, 16 V, X7R, 10%603StdStd
1C15220 pFCapacitor, ceramic, 50 V, X7R, 10%603StdStd
2J1, J3ED120/2DSTerminal block, 2 pin, 15 A, 5.1 mm0.40 × 0.35 inED120/2DSOST
1J2PEC03SAANHeader, male 3 pin, 100-mil spacing0.100 in × 3PEC03SAANSullins
1J4ED555/2DSTerminal block, 2 pin, 6 A, 3.5 mm0.27 × 0.25 inED555/2DSOST
2J5, J6PEC02SAANHeader, male 2 pin, 100-mil spacing,0.100 in × 2PEC02SAANSullins
1L11.1 µHInductor, power choke, 20 ±%6.9 × 7 mm744314110IND_744314110
0R10Resistor, chip, 1/16W, 1%603StdStd
0R20Resistor, chip, 1/16W, 1%603StdStd
1R333.1Resistor, chip, 1/16W, 1%603StdStd
3R410kResistor, chip, 1/16W, 1%603StdStd
1R75.11kResistor, chip, 1/16W, 1%604StdStd
1R549.9Resistor, chip, 1/16W, 1%603StdStd
1R669.8kResistor, chip, 1/16W, 1%603StdStd
1R820.0kResistor, chip, 1/16W, 1%603StdStd
1R9100kResistor, chip, 1/16W, 1%603StdStd
1R102.55kResistor, chip, 1/16W, 1%603StdStd
1R1113.3kResistor, chip, 1/16W, 1%603StdStd
0R1220.0kResistor, chip, 1/16W, 1%603StdStd
1R133.01kResistor, chip, 1/16W, 1%603StdStd
1Shunt1NAShunt, 100-mil, black0.100 in929950-003M
2TP1, TP55010Test point, red, thru hole0.125 × 0.125 in5010Keystone
6TP2, TP3, TP4, TP10, TP11, TP125012Test point, white, thru hole0.125 × 0.125 in5012Keystone
4TP6, TP8, TP13, TP145011Test point, black, thru hole0.125 × 0.125 in5011Keystone
2TP7, TP95013Test point, orange, thru hole0.125 x 0.125 in5013Keystone
1U1TPS54020RUWIC, 4.5 V–17 V input, 10-A sync. step down SWIFT converterQFNTPS54020RUWTPS54020RUW
1—PCB, 3.0 in × 2.0 in × 0.062 inPWR082Any
Note 1. This assembly is ESD sensitive. Observe ESD precautions.