4 layers172.2 × 91.9 mm
Front PCB
Arrow-air/project-quiver
Project Quiver documentation, designs, and project artifacts.
87 parts617CERN-OHL-S-2.0
4 layers32.4 × 48 mm
OmegaPoE
zeroping/OmegaPoE15A Power-over-Ethernet Dock for the Onion Omega board
- Size
- 32.4 × 48 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 87
- Nets
- 78
- Pads
- 329
- Tracks, vias
- 1,458, 82
- Pours
- 26
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 10 Jun 2018
- Updated
- 10 Jul 2023
Overview
OmegaPoE is an open-source printed circuit board by zeroping, from the zeroping/OmegaPoE repository on GitHub. It is a 4-layer board of 32.4 × 48 mm with 87 parts on 78 nets, routed with 1,458 tracks and 82 vias.
It is built around the PS2501-1, FDM3622 and PA1276NL. Its parts include 32 capacitors, 28 resistors, 6 diodes, 5 ICs and 4 connectors. It belongs with the interfaces and adapters boards of this library.
Main components
3
PS2501-1
DIP-4-30℃~+100℃ 1 1.2V 200mW 300mV@2mA,10mA 3us 4us@2mA,100Ω 5.3kV 50mA 50mA 600% 6V 80% 80V DC Phototransistor DIP-4 Transistor, Photovoltaic Output Optoisolators ROHSIsocom ComponentsTransistor, Photovoltaic Output OptoisolatorsFDM3622
WDFN-8(3.3x3.3)-55℃~+150℃ 1 N-channel 1.09nF 100V 17nC@10V 2.1W 4.4A 4V 55pF 60mΩ@10V WDFN-8(3.3x3.3) MOSFETs ROHSonsemiMOSFETsPA1276NL
--40℃~+130℃ 1:0.682:0.682 77.4uH - Pulse Transformers(LAN) ROHSPulse ElecPulse Transformers(LAN)
README
README.mdOmegaPoE
A Power-over-Ethernet Dock for the Onion Omega board
This is a KiCad circut board design for an Onion Omega "dock" that connects the Onion via Ethernet, while also powering it via 802.3af Power-over-Ethernet.
The Onion Omega is a cheap ($10.75) linux single-board computer, and supports WiFi and Ethernet. For more information on the Onion Omega, see the Onion Omega site.
This board is designed to be as small as possible while still providing an isolated 15-watt PoE supply. The 48 VDC power from PoE is converted into 12 V using a TI LM5070 in a flyback configuration. The 12 V is further stepped down to 5 V and 3.3 V using two TPS62135x DC-DC buck converters. 12 V was chosen to allow running 12V perhierals off of the board, such as 12V LED lighing strips.
Status
Four prototype boards have been built, and they work. There are some issues to work out and fixes to commit, but here's the v1 board run:
Parts
87| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 10uF | Capacitors_SMD:C_1206 | C3, C13, C15, C16, C24, C25, C26, C27, C28, C29 |
| 5 | 100nF | Capacitors_SMD:C_0402 | C4, C5, C8, C11, C12 |
| 5 | 1uF | Capacitors_SMD:C_0402 | C7, C9, C21, C30, C31 |
| 4 | 100 | Resistors_SMD:R_0402 | R15, R17, R21, R28 |
| 4 | 49.9 | Resistors_SMD:R_0603 | R4, R9, R11, R12 |
| 3 | 100K | Resistors_SMD:R_0402_NoSilk | R1, R25, R27 |
| 3 | Hole | Mounting_Holes:MountingHole_2.2mm_M2_Pad_Via | MK1, MK2, MK3 |
| 2 | 1uH | Inductors_SMD:L_1210 | L2, L3 |
| 2 | 3.3uF | Capacitors_SMD:C_1206 | C1, C2 |
| 2 | 4.7nF | Capacitors_SMD:C_0402_NoSilk | C17, C20 |
| 2 | 4.7nF | Capacitors_SMD:C_0402 | C10, C19 |
| 2 | 560k | Resistors_SMD:R_0603 | R2, R22 |
| 2 | Conn_02x01 | Pin_Headers:Pin_Header_Straight_2x01_Pitch2.54mm | J3, J4 |
| 2 | D_Bridge_A+A- | lib_fp:U-DFN303-4 | D1, D2 |
| 2 | TPS62135 | lib_fp:DFN-8-3EP_3x2mm_Pitch0.5mm | U4, U5 |
| 1 | 0.33 | Resistors_SMD:R_0805 | R8 |
| 1 | 1.00K | Resistors_SMD:R_0402 | R23 |
| 1 | 1.5nF | Capacitors_SMD:C_1206 | C23 |
| 1 | 10 | Resistors_SMD:R_0402 | R16 |
| 1 | 100k | Resistors_SMD:R_0402 | R10 |
| 1 | 100nF | Capacitors_SMD:C_1206 | C6 |
| 1 | 10K | Resistors_SMD:R_0402 | R19 |
| 1 | 11.5K | Resistors_SMD:R_0402 | R18 |
| 1 | 12.1k | Resistors_SMD:R_0402 | R14 |
| 1 | 180nH | lib_fp:Murata-3000A-series | L1 |
| 1 | 1N4148 | Diodes_SMD:D_SOD-123 | D3 |
| 1 | 1nF | Capacitors_SMD:C_0402 | C18 |
| 1 | 22 | Resistors_SMD:R_0402 | R13 |
| 1 | 24.3K | Resistors_SMD:R_0603 | R5 |
| 1 | 27nF | Capacitors_SMD:C_0603 | C22 |
| 1 | 33.2k | Resistors_SMD:R_0402 | R3 |
| 1 | 374K | Resistors_SMD:R_0402_NoSilk | R26 |
| 1 | 4.7uF | Capacitors_SMD:C_0805 | C14 |
| 1 | 560 | Resistors_SMD:R_0402 | R20 |
| 1 | 570 | Resistors_SMD:R_0402 | R7 |
| 1 | 619K | Resistors_SMD:R_0402_NoSilk | R24 |
| 1 | CONN_EXPANSION | Pin_Headers:Pin_Header_Straight_2x15_Pitch2.54mm | J2 |
| 1 | DNP | Capacitors_SMD:C_1206 | C32 |
| 1 | FDM3622 | lib_fp:DFN-8-1EP_3x3mm_Pitch0.65mm-mod | Q1 |
| 1 | LED | lib_fp:LED_reverse_gull | D6 |
| 1 | LED | LEDs:LED_0603 | D4 |
| 1 | LM5070 | Housings_SSOP:TSSOP-16_4.4x5mm_Pitch0.65mm | U1 |
| 1 | ONION-OMEGA2 | lib_fp:ONION-OMEGA | U3 |
| 1 | OPEN | Resistors_SMD:R_0402 | R6 |
| 1 | PA1276 | lib_fp:Pulse_PA1269 | T1 |
| 1 | PS2501-1 | Housings_DIP:SMDIP-4_W7.62mm | U2 |
| 1 | Q_NMOS_GSD | TO_SOT_Packages_SMD:SOT-23 | Q2 |
| 1 | RJ45-TRANS_POE | lib_fp:JD0-0004NL | J1 |
| 1 | SMAJ640A | Diodes_SMD:D_SOD-123F | DZ1 |
| 1 | SW_Push | Buttons_Switches_SMD:SW_SPST_KMR2 | SW1 |
| 1 | Schottky | TO_SOT_Packages_SMD:TO-277A | D5 |
| 1 | VLMV431_voltage_reference | TO_SOT_Packages_SMD:SOT-23 | REF1 |
Questions
How big is the OmegaPoE PCB?
It measures 32.4 × 48 mm and has 4 copper layers, 1.6 mm thick.
What parts does the OmegaPoE use?
87 parts, built around the PS2501-1, FDM3622 and PA1276NL. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the OmegaPoE KiCad files?
From the zeroping/OmegaPoE repository on GitHub, at the commit this page was made from: the board is omegaPoE.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the OmegaPoE design in my own project?
Its repository states no licence, so its author keeps all rights: ask zeroping before reusing the design.
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