Power supply
About the Power supply PCB
Power supply is an open source PCB design by meadiode, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 36.7 × 24.1 mm, with 20 components from 17 distinct parts.
Other key parts include the MCP1640x-xCHY and MCP73831-2-OT. By type, the board carries 6 resistors, 4 connectors, 4 capacitors, 2 ICs, 2 diodes and 1 transistor.
It belongs with the power & battery designs in this gallery.
From the project
Epic Minimalist Entertainment System - DIY handheld handheld game console
EMES - is a very minimalistic DIY handheld game console.
- Screen: 15x10 pixels, LED - Input: four button keyboard - Sound: Magnetic buzzer - Physical dimensions(approx): 40x32x14mm - Removeable 8-pin cartridges
The console doesn't have an onboard CPU/MCU, instead an MCU is placed on every removable cartridge.
Each cartridge features an ATTiny10 MCU with the following specs:
Main components on the Power supply
Power supply bill of materials (BOM)
20 components, 17 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP1640x-xCHY | SOT-23-6 | U1 |
| 1 | MCP73831-2-OT | SOT-23-5 | U2 |
| 1 | DMG2301L | SOT-23 | Q1 |
| 1 | USB_C_Receptacle_PowerOnly_6P | USB_C_Receptacle_GCT_USB4125-xx-x_6P_TopMnt_Horizontal | J1 |
| 1 | Battery terminal | Pads_1x2mm_2x | J2 |
| 1 | Base board power terminal | Pads_1x2mm_2x | J3 |
| 1 | Shorted if cartridge present | Pads_1x2mm_2x | J4 |
| 1 | MBR1020VL | D_SOD-123F | D1 |
| 1 | LED | LED_0603_1608Metric | D2 |
| 1 | 4.7uH | L_Coilcraft_XAL5050-XXX | L1 |
| 3 | 4.7uF | C_0603_1608Metric | C1, C3, C4 |
| 1 | 10uF | C_0603_1608Metric | C2 |
| 2 | 309K | R_0603_1608Metric | R1, R6 |
| 1 | 976K | R_0603_1608Metric | R2 |
| 1 | 200R | R_0603_1608Metric | R3 |
| 1 | 2K | R_0603_1608Metric | R4 |
| 1 | 100K | R_0603_1608Metric | R5 |
Power supply design files
The KiCad project lives in the meadiode/EMES repository on GitHub; these links point at the commit this page was built from.
Power supply: common questions
How big is the Power supply PCB?
The Power supply measures 36.7 × 24.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Power supply?
20 components, from 17 distinct parts. The full bill of materials is listed on this page.
Where can I download the Power supply design files?
From the meadiode/EMES repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Power supply design in my own project?
Yes, under the terms of its GPL-3.0 license, which meadiode chose for the repository.
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