Prepared by @Joe Dai on August 30, 2023

Relevant Documentation

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

Overview

To address issues found during preliminary testing of the “SimpleBuck-Joe” rev. 1, a board modification has been completed to allow for the proper operation of the buck converter.

Description of Work Done

Feedback Resistor Rework

The following procedure shall be conducted to fix the issue the feedback resistors being erroneously connected to VIN rather VOUT.

1. Cut trace between R11 and R13 and trace between R21 and R23.
   • Screenshot (cut along dotted white lines)
2. Connect bottom pad of R11 to right pad of L11.
   • Screenshot (dotted green line is wire)
3. In the same fashion as step 2, connect top pad of R21 to left pad of L21.

BOM Changes

None.