10 Yuan Hand-Assembled 240W Desktop Charger

This is a four-port Type-C desktop charger, with a maximum single-port output of 63W and a total output of 240W. Each port features independent voltage regulation, ensuring they do not interfere with one another. The input is a 24V DC power supply; a power supply exceeding 250W is recommended.

Detailed specifications are shown in the diagram

Basic soldering skills are required for DIY assembly

1. Purchase four modules

Add capacitors, a 100µF 35V capacitor (near the pin capacitor position) is recommended, and another capacitor with a voltage rating exceeding 25V. The inductor should be 22µH (10µH is also acceptable, but ripple will increase).

JLCPCB offers free prototyping for five adapter boards. Order the basic board; a Pro version with a 1.4-inch color screen for power monitoring will be open-sourced later.

Gerber files are available for direct ordering. Hardware designs will subsequently be open-sourced on the JLCPCB open-source platform.

Update 2025/07/22: All hardware has been open-sourced. See 10 Yuan 240W Desktop Charger - JLCPCB Open Hardware Platform

The top-layer capacitor may be omitted; the bottom-layer soft-start circuit is recommended to prevent arcing when inserting the DC plug. Omit the capacitor by directly shorting the MOSFET pads.

After soldering, secure the components using M2.5*5 self-tapping screws, and finally secure the top cover using M1.6*6 self-tapping screws.

Appendix:

PCB1_1_2025-5-10: Interactive BOM, open with a web browser after extraction.

Gerber_Basic Version: PCB production files, parameters shown in the diagram