SLVU735A June   2012  – February 2022 TPS51225

 

  1.   Trademarks
  2. 1 Description
    1. 1.1 Typical Applications
    2. 1.2 Features
  3. 2 Electrical Performance Specifications
  4. 3 Schematic
  5. 4 Test Setup
    1. 4.1 Test Equipment
    2. 4.2 Recommended Test Setup
  6. 5 Configurations
  7. 6 Test Procedure
    1. 6.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 6.2 List of Test Points
    3. 6.3 Equipment Shutdown
  8. 7 Performance Data and Typical Characteristic Curves
    1. 7.1  5-V Efficiency
    2. 7.2  5-V Load Regulation
    3. 7.3  3.3-V Efficiency
    4. 7.4  3.3-V Load Regulation
    5. 7.5  Enable Turn-On/Turn-Off
    6. 7.6  Output Ripple
    7. 7.7  Switching Node
    8. 7.8  5-V Output Transient with Auto-skip Mode
    9. 7.9  3.3-V Output Transient with Auto-skip Mode
    10. 7.10 Output Prebias Turn-On
    11. 7.11 Thermal Image
  9. 8 EVM Assembly Drawing and PCB Layout
  10. 9 Bill of Materials
  11. 10Revision History

9 Bill of Materials

This is the EVM components list according to the schematic shown in Figure 3-1.

Table 9-1 EVM Components List
QtyRefDesDescriptionMFRPart Number
4C1, C2, C3, C4Capacitor, ceramic, 22 µF, 25 V, X5R, 20%, 1210MurataGRM32ER61C226KE20L
6C10, C15, C19, C20, C21, C22Capacitor, ceramic, 0.1 µF, 50 V, X7R, 10%, 0603STDSTD
4C5, C6, C26, C27Capacitor, ceramic, 0.01 µF, 50 V, X7R, 10%, 0603STDSTD
3C7, C8, C9Capacitor, ceramic, 1 µF, 10 V, X7R, 10%, 0603STDSTD
2C11, C12Capacitor, POS, 330 µF, 6.3 VDC, 18 mΩ, 20%, 7343Sanyo6TPE330MIL
2C16, C17Capacitor, POS, 470 µF, 4 VDC, 18 mΩ, 20%, 7343Sanyo4TPE470MIL
1D1Diode, Schottky barrier array, 70 mA, 40 V, SOT363BAS40DW-04Diodes
1L1Inductor, SMT, 3.3 µH, 12.3 A, 9.2 mΩ, 11.2 mm × 10.0 mmTokoFDVE1040-H-3R3M
1L2Inductor, SMT, 2.2 µH, 14.2 A, 6.1 mΩ, 11.2 mm × 10.0 mmTokoFDVE1040-H-2R2M
2Q1, Q2MOSFET, Dual N-Chan, 30 V, 25 A, QFN-8 POWERTICSD87352Q5D
9R1, R3, R4, R5, R7, R19, R20, R21, R22Resistor, chip, 0 Ω, 1/16W, 1%, 0603STDSTD
2R10, R11Resistor, chip, 30.1 kΩ, 1/16W, 1%, 0603STDSTD
1R18Resistor, chip, 51.1 kΩ, 1/16W, 1%, 0603STDSTD
1R12Resistor, chip, 100 kΩ, 1/16W, 1%, 0603STDSTD
1R14Resistor, chip, 15.0 kΩ, 1/16W, 1%, 0603STDSTD
2R15, R17Resistor, chip, 10.0 kΩ, 1/16W, 1%, 0603STDSTD
1R16Resistor, chip, 7.50 kΩ, 1/16W, 1%, 0603STDSTD
1R6Resistor, chip, 2.21 Ω, 1/16W, 1%, 0603STDSTD
1R2Resistor, chip, 4.02 Ω, 1/16W, 1%, 0603STDSTD
1U1IC, Dual Synchronous Step-Down Controller with 5-V/3.3-V LDOs for Notebook System Power DFN-20TITPS51225RUK