SLVUAM8B December   2015  – August 2021 TPS54A20

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Before You Begin
    2. 1.2 Background
    3. 1.3 Performance Specification Summary
    4. 1.4 Modifications
      1. 1.4.1 Output Voltage Setpoint
      2. 1.4.2 On Time
      3. 1.4.3 Adjustable UVLO
  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 Thermal Image
  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

2.8 Input Voltage Ripple

Figure 2-10, Figure 2-11 and Figure 2-12 show the TPS54A20EVM-770 input voltage ripple. The load currents are 0 A, 5 A and 10 A. VIN = 12 V. The ripple voltage is measured directly across TP1 and TP2.

GUID-D8CACD40-B871-4C82-8CF5-A0E55D56F5B9-low.gifFigure 2-10 TPS54A20EVM-770 Input Ripple, 0 A Load
GUID-81B72CB8-3512-4D5C-8B12-950D1EB9D5FC-low.gifFigure 2-11 TPS54A20EVM-770 Input Ripple, 5 A Load
GUID-ED24718A-B14F-4145-8F2B-B2780EC6E03A-low.gifFigure 2-12 TPS54A20EVM-770 Input Ripple, 10 A Load