TIDT296 September   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Cross Regulation
    3. 2.3 Thermal Images
  6. 3Waveforms
    1. 3.1 Start-Up
    2. 3.2 Undervoltage Protection
    3. 3.3 Output Voltage Ripple
    4. 3.4 Load Transients
    5. 3.5 Switching Node Waveforms
    6. 3.6 Short-Circuit Test
    7. 3.7 Diode Voltage Stress

3.1 Start-Up

The following images show the PMP40994 start-up waveforms.

GUID-20220815-SS0I-KL8F-H0JG-84KVKRFQB8LC-low.pngFigure 3-1 12-VIN Dual-Channel Output Start-Up Waveforms
GUID-20220815-SS0I-GTZL-N5CG-8CQWHJKGQDQD-low.pngFigure 3-2 Channel A, +15 V, –8-V Output Start-Up Waveforms