SLUUCH6B september   2022  – september 2023 TPS543B22

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Background
    2. 1.2 Before You Begin
    3. 1.3 Performance Characteristics Summary
  5. 2Configurations and Modifications
    1. 2.1 Output Voltage
    2. 2.2 Switching Frequency (FSEL Pin)
    3. 2.3 Current Limit, Soft-Start Time, and Internal Compensation (MODE Pin)
    4. 2.4 Adjustable UVLO
  6. 3Test Setup and Results
    1. 3.1  Input/Output Connections
    2. 3.2  Efficiency
    3. 3.3  Output Voltage Regulation
    4. 3.4  Load Transient and Loop Response
    5. 3.5  Output Voltage Ripple
    6. 3.6  Input Voltage Ripple
    7. 3.7  Synchronizing to a Clock
    8. 3.8  Start-up and Shutdown with EN
    9. 3.9  Start-up and Shutdown with VIN
    10. 3.10 Start-up Into Pre-Bias
    11. 3.11 Hiccup Current Limit
    12. 3.12 Thermal Performance
  7. 4Board Layout
    1. 4.1 Layout
  8. 5Schematic and Bill of Materials
    1. 5.1 Schematic
    2. 5.2 Bill of Materials
  9. 6Revision History

3.11 Hiccup Current Limit

These waveforms show the TPS543B22 entering hiccup with an overload. The TPS543B22 tries to restart after the Hiccup wait time period but the overload was still present on the output.

GUID-20230801-SS0I-XC21-GXMW-LL2FJPMR3QQT-low.svgFigure 3-27 U1 Output Overcurrent Protection – Overload
GUID-20220829-SS0I-DJHG-9KVM-LCC509K6Q0B0-low.svgFigure 3-28 U2 Output Overcurrent Protection – Overload