PSU
About the PSU PCB
PSU is an open source PCB design by TZeng0698, published on GitHub. It is a 2-layer board measuring 42.8 × 17.8 mm, with 31 components from 22 distinct parts.
Other key parts include the LM27762, OPA2237 and TLV70233_SOT23-5. By type, the board carries 12 capacitors, 5 connectors, 4 resistors, 3 ICs, 3 inductors and 2 fuses.
From the project
A Low-cost EEG BCI implementation with modular filtering card and ADS1298. The repo contains the PCB files and a guide to design your own(in progress).
Main components on the PSU
PSU bill of materials (BOM)
31 components, 22 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM27762 | WSON-12-1EP_3x2mm_P0.5mm_EP1x2.65_ThermalVias | U1 |
| 1 | OPA2237 TLV70233_SOT23-5 | SOT-23-5 | U2 |
| 1 | TLV70233_SOT23-5 | SOT-23-5 | U3 |
| 1 | CONN_01X07_PIN Conn_01x02_Pin | JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J1 |
| 2 | Conn_01x03_Pin | JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J2, J3 |
| 2 | Conn_01x02_Pin | JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J4, J5 |
| 2 | Fuse | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1, F2 |
| 2 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2 |
| 3 | 22u | L_0805_2012Metric | L1, L2, L3 |
| 1 | 0.47U 4.7u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 0.47u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2 |
| 2 | 0.1U 4.7u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C10 |
| 1 | 0.1U 2.2u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4 |
| 1 | 2.2u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5 |
| 1 | 0.22U 10u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6 |
| 1 | 1PF 10u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 1 | 33N 10u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8 |
| 3 | 0.1U 10u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C9, C11, C12 |
| 1 | 20K 110k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 3.3M 110k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 30K 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
PSU design files
The KiCad project lives in the TZeng0698/Portable-EEG-with-Modular-Pre-Filtering-for-BCI-Applications repository on GitHub; these links point at the commit this page was built from.
PSU: common questions
How big is the PSU PCB?
The PSU measures 42.8 × 17.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PSU?
31 components, from 22 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the PSU design files?
From the TZeng0698/Portable-EEG-with-Modular-Pre-Filtering-for-BCI-Applications repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the PSU design in my own project?
The repository has no license, so all rights stay with TZeng0698. Use it as a reference, and ask the author before reusing the design.
