SLVU491A November   2011  – October 2021 TPS54294

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output Voltage Setpoint
    2. 3.2 Output Filter and Closed-Loop Response
  5. 4Test Setup and Results
    1. 4.1 Input/Output Connections
    2. 4.2 Start-Up Procedure
    3. 4.3 Efficiency
      1. 4.3.1 Efficiency of Converter 1
      2. 4.3.2 Efficiency of Converter 2
    4. 4.4 Load Regulation
      1. 4.4.1 Load Regulation of Converter 1
      2. 4.4.2 Load Regulation of Converter 2
    5. 4.5 Line Regulation
      1. 4.5.1 Line Regulation Converter 1
      2. 4.5.2 Line Regulation Converter 2
    6. 4.6 Load Transient Response
      1. 4.6.1 Load Transient Response Converter 1
      2. 4.6.2 Load Transient Response Converter 2
    7. 4.7 Output Voltage Ripple
      1. 4.7.1 Output Voltage Ripple Converter 1
      2. 4.7.2 Output Voltage Ripple Converter 2
    8. 4.8 Input Voltage Ripple
    9. 4.9 Start-Up and Shutdown
      1. 4.9.1 Start-Up and Shutdown Converter 1
      2. 4.9.2 Start-Up and Shutdown Converter 2
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Schematic, Bill of Materials, and Reference
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
    3. 6.3 Reference
  8. 7Revision History

Start-Up and Shutdown Converter 2

The TPS54294EVM start-up waveform of converter 2 relative to VIN is shown in Figure 4-20 and the shut-down waveform is shown in Figure 4-21.

GUID-D012F889-2C06-4AB6-989B-AE2B7D646831-low.gifFigure 4-20 TPS54294EVM Converter 2 Start-Up Relative to VIN
GUID-F954B528-10C6-4F85-8EB0-4129159C4EFC-low.gifFigure 4-21 TPS54294EVM Converter 2 Shut-Down Relative to VIN

The TPS54294EVM start-up waveform of converter 2 relative to EN2 is shown in Figure 4-22 and the shut-down waveform is shown in Figure 4-23.

GUID-286759FE-A93F-425B-82BD-587548ED2BC2-low.gifFigure 4-22 TPS54294EVM Start-Up Relative to EN2
GUID-188D2330-4F8A-457C-9D5B-2DFC1B0F22FD-low.gifFigure 4-23 TPS54294EVM Shut-Down Relative to EN2