SBOA600 July   2024 ISOTMP35

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Calculating Thermal Response Time
    2. 1.2 Current Design with Non-Isolated Temperature Sensors
    3. 1.3 Proposed Design Using the ISOTMP35 Isolated Temperature Sensor
  5. 2Experiment Setup
    1. 2.1 Step 1: Prepare the Oil Bath
    2. 2.2 Step 2: Prepare the Liquid Gallium
    3. 2.3 Step 3: Submerge the Copper Pad
    4. 2.4 Step 4: Prepare Each PCB Configuration
    5. 2.5 Step 5: Testing Each PCB Configuration
    6. 2.6 Test Results
  6. 3Summary
  7. 4References

2.2 Step 2: Prepare the Liquid Gallium

The boards being testing use no high voltage signals, but use a 1 square inch copper pad to mimic a high voltage heat source. The board is submerged in the liquid gallium, to fully submerge the copper pad only. The liquid gallium is poured into the crucible, coming up to the bottom of the ABS lid. The same amount of liquid gallium is poured each time, making sure that the test conditions are consistent between runs.

Empty CrucibleFigure 2-2 Empty Crucible
Crucible Filled with Liquid Gallium Placed in Oil BathFigure 2-3 Crucible Filled with Liquid Gallium Placed in Oil Bath