TIDT318 January   2023

 

  1.   Description
  2.   Features
  3.   Applications
  4. 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
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Thermal Images
    3. 2.3 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Load Transients

1.2 Required Equipment

  • VIN power supply 6 V to 32 V, at least 240 W at the input voltage under test, or 40 A for the full load off a 6-V input
  • Electronic load to step for efficiency graphs, and for dynamic load testing such as Kikusui PLZ334WL
  • Low inductance dynamic load for the 3.3-V output if the load slew rates > 3 A / μs needed
  • Oscilloscope such as Tektronix MDO34 with TPP0500B 10 × voltage probes and 30-A TCP0030A current probe
  • Digital multimeters such as Fluke 87iii or 87V
  • For Bode plots: Vector Network Analyzer such as Bode 100 from OMICRON Lab
  • Thermal camera such as FLIR E75
  • Keysight 34970 data acquisition, switch unit along with calibrated 100-A and 50-A current shunts for efficiency measurements