TIDT357 November   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Power Requirements
    1.     6
    2.     7
    3. 1.1 Power-On Sequence
    4. 1.2 Power-Off Sequence
    5. 1.3 Required Equipment
    6. 1.4 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  7. 3Waveforms
    1. 3.1 Start-Up Sequence
    2. 3.2 Shutdown Sequence
    3. 3.3 Output Voltage Ripple
    4. 3.4 Load Transients

3.2 Shutdown Sequence

The waveform in Figure 3-2 shows the power-down sequence of the different power rails. In the waveform, 3V3 represents the VDDSHVx power supply grouping, 1V8_Main represents VDDSHVy, and 1V8_Analog represents VDDA_1P8. The PMP23242 board was blue wired to the SK-AM62A-LP evaluation board to confirm power-down sequence.

GUID-20230914-SS0I-JJZ2-B0D5-TBWQTQJX5L5D-low.pngFigure 3-2 Shutdown 1