TIDT419 January   2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Dimensions
    5. 1.5 Test Setup
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Charge Time and Holdup Time
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Input and Output Voltage Ripple
      1. 3.2.1 Buck Converter
      2. 3.2.2 Boost Converter
    3. 3.3 Load Transients
    4. 3.4 Start-up Sequence

3.4 Start-up Sequence

Figure 2-5 and Figure 3-2 show the buck converter start-up behavior waveforms.

PMP23518 Buck Converter Turn-On, 0A Load
Ch 1: input voltage at J1; Ch 2: output voltage at J2
Figure 3-9 Buck Converter Turn-On, 0A Load
PMP23518 Buck Converter Turn-On, 1A Load
Ch 1: input voltage at J1; Ch 2: output voltage at J2
Figure 3-10 Buck Converter Turn-On, 1A Load