SLUU381B September   2009  – February 2022 TPS51220A

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
    1. 2.1 Typical Applications
    2. 2.2 Features
  4. 3 Electrical Performance Specifications
  5. 4 Schematic
  6. 5 Test Setup
    1. 5.1 Test Equipment
    2. 5.2 Recommended Test Setup
    3. 5.3 List of Test Points
  7. 6 Test Procedure
    1. 6.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 6.2 Output Ripple Test
    3. 6.3 Measuring Improved Light Load Efficiency
    4. 6.4 Control Architecture and OVP Select
    5. 6.5 Overcurrent Trip Level and Output Discharge Select
  8. 7 Performance Data and Typical Characteristic Curves
    1. 7.1 Efficiency
    2. 7.2 Load Regulation
    3. 7.3 Bode Plot
    4. 7.4 Transient Response
    5. 7.5 Output Ripple and Switch Node
    6. 7.6 Turn-On Waveform
    7. 7.7 Turn-Off Waveform
  9. 8 EVM Assembly Drawing and PCB Layout
  10. 9 List of Materials
  11. 10Revision History

9 List of Materials

Table 9-1 EVM Components List According to Schematic Shown in Figure 4-1
QTYREFDESDESCRIPTIONMFRPART NUMBER
4C1, C2, C4, C5Capacitor, ceramic, 10 μF, 25 V, X7R, ±10%, 1210muRataGRM32DR71E106K
2C10, C11Capacitor, POS-CAP, 330 μF, 6.3 V, 18 mΩ, 20%SANYO6TPE330MIL
2C14, C15Capacitor, POS-CAP, 470 μF, 4.0 V, 15 mΩ, 20%SANYO4TPE470MFL
3C16, C17, C21Capacitor, ceramic, 0.01 μF, 50 V, X7R, ±10%, 0603StdStd
4C20, C23, C26, C27Capacitor, ceramic, 100 pF, 50 V, C0G, ±5%, 0603StdStd
1C22Capacitor, ceramic, 2.2 μF, 6.3 V, X5R, ±10%, 0603StdStd
1C28Capacitor, ceramic, 47 pF, 50 V, C0G, ±5%. 0603StdStd
6C3, C6, C18, C19, C24, C25Capacitor, ceramic, 0.1 μF, 50 V, X7R, ±10%, 0603StdStd
1C8Capacitor, ceramic, 0.22 μF, 25 V, X7R, ±10%, 0603StdStd
1C9Capacitor, ceramic, 10 μF, 6.3 V, X5R, ±10%, 0805TDKC2012X5R0J106K
2D1, D2Diode, Schottky, 40 V, 30 mA, SOD-323RohmRB751x-40
2L1, L2Inductor, 3.3-µH, 12 AVishayIHLP5050CEER3R3
2Q1, Q2MOSFET, N-ch, 30 V, 14 A, 9.7 mΩTICSD17307Q5A
2Q3, Q4MOSFET, N-ch, 30 V, 21 A, 4.5 mΩTICSD17310Q5A
11R1, R2, R9, R12, R13, R14, R16, R17, R23, R34, R37Resistor, chip, 0 Ω, 1/16 W, ±5%, 0603StdStd
1R20Resistor, chip, 300 kΩ, 1/16 W, ±1%, 0603StdStd
1R21Resistor, chip, 8.20 kΩ, 1/16 W, ±1%, 0603StdStd
1R22Resistor, chip, 7.50 kΩ, 1/16 W, ±1%, 0603StdStd
2R24, R25Resistor, chip, 5.60 kΩ, 1/16 W, ±1%, 0603StdStd
2R26, R29Resistor, chip, 51.1 Ω, 1/16 W, ±1%, 0603StdStd
1R27Resistor, chip, 120 kΩ, 1/16 W, ±1%, 0603StdStd
1R28Resistor, chip, 62.0 kΩ, 1/16 W, ±1%, 0603StdStd
1R30Resistor, chip, 30.0 kΩ, 1/16 W, ±1%, 0603StdStd
1R31Resistor, chip, 27.0 kΩ, 1/16 W, ±1%, 0603StdStd
1R38Resistor, chip, 15.0 kΩ, 1/16 W, ±1%, 0603StdStd
1R39Resistor, chip, 12.0 kΩ, 1/16 W, ±1%, 0603StdStd
2R5, R6Resistor, chip, 15.4 Ω, 1/16 W, ±1%, 0603StdStd
2R7, R15Resistor, chip, 470 kΩ, 1/16 W, ±1%, 0603StdStd
1U1Fixed frequency 99% duty cycle, dual buck controllerTITPS51220ARTV