TIDT441 July   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Dimensions
    3. 1.3 Precautions
  7. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
      1. 2.2.1 28V Output Voltage
      2. 2.2.2 20V Output Voltage
      3. 2.2.3 15V Output Voltage
      4. 2.2.4 12V Output Voltage
      5. 2.2.5 9V Output Voltage
      6. 2.2.6 5V Output Voltage
    3. 2.3 Thermal Images
      1. 2.3.1 Buck Mode
      2. 2.3.2 Boost Mode
    4. 2.4 Bode Plots
    5. 2.5 Digital Communications: USB-C With DP ALT Mode
  8. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients

2.1 Efficiency Graphs

Efficiency is shown in Figure 2-1. In the efficiency graph, 88mA were subtracted to the measured input current. This value represents the board quiescent current when Vin is supplied and LM251772 is disabled.

PMP31344 Efficiency Graph at 12V Input Figure 2-1 Efficiency Graph at 12V Input