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

2.5 Load Transients

Figure 2-5 shows the TPS54A20EVM-770 response to load transients. The current step is from 0 A to 9 A. The current step slew rate is 9 A/µs. Total peak-to-peak voltage variation is as shown, including ripple and noise on the output. The transient waveform is measured using the on-board fast transient circuit.

CAUTION:

Q1 may get hot. Limit the power dissipation to 3W or less. Use low duty cycles.

GUID-DE0A9556-6F68-4210-AAD7-C386CAE20AD1-low.gifFigure 2-5 TPS54A20EVM-770 Transient Response