2 layers61.8 × 18.5 mm
2 layers47.9 × 18.7 mm
Miscellaneous PCB Works
- Size
- 47.9 × 18.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 36
- Pads
- 133
- Tracks, vias
- 568, 44
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 29 Jan 2021
- Updated
- 24 Mar 2022
Overview
Emac is an open-source printed circuit board by SdtElectronics, from the SdtElectronics/Biscuits repository on GitHub. It is a 2-layer board of 47.9 × 18.7 mm with 27 parts on 36 nets, routed with 568 tracks and 44 vias.
It is built around the LAN8720A-CP and HR911105A. Its parts include 12 resistors, 9 capacitors, 3 connectors, 1 IC and 1 crystal. It belongs with the interfaces and adapters and microcontroller boards boards of this library.
Main components
2README
BLDC_D28_Drv/README.mdBLDC_D28_Drv
Tiny driver stage for mounting on BLDC motors with 28/29mm diameters.
Highlights:
- Specialized outline for mounting on BLDC motors with 28/29mm diameters. Can also be uesd as a general-purpose 3-phase bridge.
- Features 3 bootstrap half-bridge driver with common footprint. TTL/CMOS logic input compatible.
- Separated power supply for gate driver and motor power makes it capable to drive motors require high volatge.
Status:
Partially verified.
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C3, C6, C7, C8, C9 |
| 4 | 49.9 | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R8 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R1, R2, R12 |
| 2 | 10u | Capacitor_SMD:C_0603_1608Metric | C4, C5 |
| 2 | 680 | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | C | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 1 | 1.5k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 12.1k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 25M | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | Conn_01x24_MountingPin | Connector_FFC-FPC:TE_2-1734839-4_1x24-1MP_P0.5mm_Horizontal | J1 |
| 1 | Conn_02x07_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x07_P2.54mm_Vertical | J2 |
| 1 | FB | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | HR911105A | HR911105A:HANRUN_HR911105A | J3 |
| 1 | LAN8720A | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U1 |
Questions
How big is the Emac PCB?
It measures 47.9 × 18.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Emac use?
27 parts, built around the LAN8720A-CP and HR911105A. 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 Emac KiCad files?
From the SdtElectronics/Biscuits repository on GitHub, at the commit this page was made from: the board is LAN8720_EMAC/emac.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Emac design in my own project?
Its repository states no licence, so its author keeps all rights: ask SdtElectronics before reusing the design.
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