2 layers70 × 57 mm
2 layers40 × 72 mm
- Size
- 40 × 72 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 70
- Nets
- 102
- Pads
- 285
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 6 (file 20211014)
- Created
- 2 Feb 2021
- Updated
- 5 Jun 2022
Overview
BCU is an open-source printed circuit board by Coilchain, from the Coilchain/Coilchain-Hardware repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 40 × 72 mm with 70 parts on 102 nets.
It is built around the STM32G474RET6, TJA1042T and LM5164DDAR, with the LTC6820HUD#PBF and NX2520SA among its other parts. Its parts include 32 capacitors, 17 resistors, 6 ICs, 5 switches and 3 connectors. It belongs with the STM32 boards of this library.
Main components
5
STM32G474RET6
LQFP-64(10x10)-40℃~+85℃ 1.71V~3.6V 128KB 12bit 12bit 170MHz 32 Bit 512KB 52 ARM Cortex-M4F Built-in FLASH LQFP-64(10x10) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
TJA1042T
SOIC-8-40℃~+150℃ 15uA 4.5V~5.5V 5Mbps 70mA CAN FD Transceiver SOIC-8 CAN Transceivers ROHSNXP SemiconductorsCAN Transceivers
LM5164DDAR
SO-8-EP-40℃~+150℃@(TJ) 1 10.5uA 1A 1MHz 6V~100V Adjustable Buck Buck Built-in Yes SO-8-EP DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
LTC6820HUD#PBF
TQFN-16-EP(3x3)-40℃~+125℃ Low-power standby、Bidirectional channel configurable、Wake-up support TQFN-16-EP(3x3) SPI Isolators ROHSAnalog DevicesDigital IsolatorsNX2520SA
UncategorisedNDK
README
README.mdCoilchain-Hardware
Parts
70| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 100nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C2, C3, C4, C10, C13, C15, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27 +2 |
| 7 | 10nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C16, C17, C28, C29, C30, C31, C32 |
| 6 | 100K | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R13, R14, R15, R16, R17 |
| 5 | TS1101CW | coilchain-switch:TS-1101-C-W | SW1, SW2, SW3, SW4, SW5 |
| 4 | 51R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R9, R10, R11, R12 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 22uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8, C11, C14 |
| 2 | 3.3nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C7, C12 |
| 2 | 453K | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R6, R7 |
| 2 | 8.2K | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R2, R5 |
| 1 | 1.5K | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R3 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 49.9K | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R8 |
| 1 | 56pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C9 |
| 1 | 68uH | Inductor_SMD:L_TDK_SLF7045 | L2 |
| 1 | 68uH | Inductor_SMD:L_1210_3225Metric_Pad1.42x2.65mm_HandSolder | L1 |
| 1 | Conn_01x07_Male | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J4 |
| 1 | JTAG | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J2 |
| 1 | LM2842YQMK_NOPB | Package_TO_SOT_SMD:SuperSOT-6 | IC1 |
| 1 | LM317_SOT-223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | LM5164DDAR | Package_SO:Texas_R-PDSO-G8_EP2.95x4.9mm_Mask2.4x3.1mm_ThermalVias | IC2 |
| 1 | LTC6820HUD#PBF | Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm | IC5 |
| 1 | NX2520SA | Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | STM32G474RET6 | Package_QFP:LQFP-64_10x10mm_P0.5mm | IC3 |
| 1 | TJA1042T | Package_SO:SO-8_3.9x4.9mm_P1.27mm | IC4 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
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Questions
How big is the BCU PCB?
It measures 40 × 72 mm and has 2 copper layers, 1.6 mm thick.
What parts does the BCU use?
70 parts, built around the STM32G474RET6, TJA1042T, LM5164DDAR and LTC6820HUD#PBF. 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 BCU KiCad files?
From the Coilchain/Coilchain-Hardware repository on GitHub, at the commit this page was made from: the board is BCU/BCU.kicad_pcb and its schematic BCU/BCU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BCU design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).