Prepared by @Joe Dai on August 30, 2023, based partly on @Darrian S’s notes and procedures outlined in [2].

Contents

Relevant Documentation

[1] TPS565201 datasheet: https://www.ti.com/lit/ds/symlink/tps565201.pdf

[2] General buck V & V notes: Joe’s Buck V & V

[3] UTAT instrument-automation repository: https://github.com/utat-ss/instrument-automation

[4] UTAT test gear list: Gear ‘n’ Stuff

[5] Wire gauge ↔ current rating: https://www.engineeringtoolbox.com/wire-gauges-d_419.html

Safety Notice

• This test deals with currents up to 5 A. Adequate gauge wiring must be used to prevent wire overheating and/or melting.
• While running at high power, the board may be very hot. Take precautions while handling the board to avoid being burned.
• When connecting wires to IN terminals, be careful of polarity. The board has no reverse voltage protection.

Overview

This test aims to calculate an efficiency matrix based on a variety of input voltages and currents. To do this, we must measure input voltage, input current, output voltage, and output current, and calculate efficiency as follows:

$$ P = VI \\ \text{Efficiency} = \frac{P_\text{out}}{P_\text{in}} $$

Test Article

Utilize the buck converter board marked JDBUCK-1.

List of Equipment