Before you put your newly soldered circuit into the enclosure, you'll want to dial in the negative and positive voltages on the breakout to +12V and -12V. There is a page with more details about this process in the guide for the TPS65131 breakout.
You'll need to power up the project with a 5V USB power supply before trying to adjust the output from the breakout.
You'll turn the positive voltage trim pot, located on the left side of the board, with a smaller screwdriver to dial in the correct positive voltage output.
Set your multimeter to DC voltage mode. Connect the ground probe to one of the ground pins on the header. Connect the volts probe to one of the positive voltage pins on the header. Use a small screwdriver to turn the positive voltage trim pot on the left side of the breakout to dial in +12V.
You'll turn the negative voltage trim pot, located on the right side of the board, with a smaller screwdriver to dial in the correct negative voltage output.
Set your multimeter to DC voltage mode. Connect the ground probe to one of the ground pins on the header. Connect the volts probe to one of the negative voltage pins on the header. Use a small screwdriver to turn the negative voltage trim pot on the right side of the breakout to dial in -12V.
Once your voltages are dialed in, you can move on to the final assembly.
Page last edited March 31, 2025
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