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

3.2 Undervoltage Protection

The following images illustrate the PMP40994 power-off waveforms.

GUID-20220815-SS0I-84BL-0MQV-HWH2TDXQVL80-low.png Figure 3-3 Two-Channel Power-Off Waveform of +23-V Output With VIN = 12 V, IOUT1 = 80 mA,
IOUT2 = 80 mA
GUID-20220815-SS0I-V7JF-96W0-KRWLNW7G3NRC-low.png Figure 3-4 VOUT1 Channel Power-Off Waveform of +15-V, 8-V Output With VIN = 12 V, IOUT1 = 80 mA,
IOUT2 = 80 mA
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