SLVU379A August   2010  – August 2021 TPS54521

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Set Point
      2. 1.3.2 Slow-Start Time
      3. 1.3.3 Track In
      4. 1.3.4 Adjustable UVLO
      5. 1.3.5 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 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 Hiccup Overcurrent Mode Operation
    11. 2.11 Thermal Characteristics
  4. 3Board Layout
    1. 3.1 Layout
    2. 3.2 Estimated Circuit Area
  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 TPS54521EVM-607.

Table 4-1 TPS54521EVM-607 Bill of Materials
COUNT REFDES VALUE DESCRIPTION SIZE PART NUMBER MFR
1 C2 10 µF Capacitor, Ceramic, 25 V, X5R, 20% 1210 Std Std
1 C3 4.7 µF Capacitor, Ceramic, 25 V, X5R, 10% 0805 Std Std
1 C4 5600 pF Capacitor, Ceramic, 50 V, X7R, 10% 0603 Std Std
1 C5 0.1 µF Capacitor, Ceramic, 16 V, X7R, 10% 0603 Std Std
1 C6 560 pF Capacitor, Ceramic, 50 V, C0G, 5% 0603 Std Std
1 C7 0.01 µF Capacitor, Ceramic, 10 V, X7R, 10% 0603 Std Std
1 C8 10 µF Capacitor, Ceramic, 10 V, X5R, 10% 0805 Std Std
1 C9 330 µF Capacitor, Alum Electrolytic 6.3 V, 125 mΩ ESR, ±20% 6.30 mm Dia EKZE6R3ELL331MF11D Chemi-con
1 L1 3.3 µH Inductor, 12mΩ DCR, 7.5 A, ± 20% 0.300 Dia. inch DR0608-332L Coilcraft
1 R1 511 K Resistor, Chip, 1/16W, 1% 0603 Std Std
2 R2, R3 100 K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R4 38.3 K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R7 51.1 Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R8 31.6 K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R9 10.0 K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 U1 TPS54521RHL IC, 17V Input, 5-A Output, Sync. Step-Down Switcher With Integrated FET QFN14 TPS54521RHL TI