SLVUB56A July   2017  – September 2021 TPS54424

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Setpoint
      2. 1.3.2 Adjustable UVLO
  3. 2Test Setup and Results
    1. 2.1  Input/Output Connections
    2. 2.2  Efficiency
    3. 2.3  Output Voltage Regulation
    4. 2.4  Load Transient and Loop Response
    5. 2.5  Output Voltage Ripple
    6. 2.6  Input Voltage Ripple
    7. 2.7  Powering Up
    8. 2.8  Powering Down
    9. 2.9  Start-Up Into Pre-Bias
    10. 2.10 Hiccup Mode Current Limit
  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

2.4 Load Transient and Loop Response

Figure 2-6 shows the TPS54424EVM-779 response to load transients. The current step is from 1 A to 3 A. The current step slew rate is 1 A/µs. Total peak-to-peak voltage variation is as shown, including ripple and noise on the output.

Figure 2-7 shows the TPS54424EVM-779 loop-response characteristics. Gain and phase plots are shown for VIN voltage of 12 V. Load current for the measurement is 2 A.

GUID-B62D328E-97C7-43F8-BB55-96155D93C8A8-low.gifFigure 2-6 TPS54424EVM-779 Transient Response
GUID-9B514E56-451F-45AC-B275-1BF9C7AB4994-low.gif
 
 
 
Figure 2-7 TPS54424EVM-779 Loop Response