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(Verified) Power supply board based on SW3518S chip

Overview

Precautions:
1. The SW3518S essentially integrates a buck converter (as stated in the datasheet). According to numerous user tests, it's best to connect it to a 24V power supply. However, it can also be used with voltages below 24V, such as 20V. Currently, there are fewer experiments with this; I will test it more when I have time.
2. When modifying the device, be sure to select the correct voltage rating for each component!
3. The SW3518S chip generates a significant amount of heat during use. I recommend, like I did, using two heatsinks.

Design Files

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Update:2026-03-28 20:13:32

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