Joe’s Buck Efficiency Test Plan

TPS565201

Temperature vs. input voltage

Temperature vs. output current

Efficiency curve

Might be useful for doing automated sweeps of voltage/current or gathering data to generate graphs: Lab Automation

August 26, 2023 Joe: Note: operational temperatures during TVAC go up to 66 °C! We will have to base our worse-case ambient on this.

125°C max, so we have 59°C headroom absolute max. That’s 3.59W power dissipation. Quite too close for comfort… (70% based on worst case power budget?)

July 29, 2023 - Darrian Shue:

Tests to perform:

Note by @Joe Dai on August 30, 2023: moved to dedicated document Joe’s Buck Efficiency Test Plan

Efficiency Measurement:

• Measure a variety of input voltages and currents to output voltage and current.
  • To determine efficiency do P = VI and E = P_in/P_out * 100%

1. Connect the input power supply to the converter and set it to a constant voltage source with a known current limit.