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foc8313
This board was inspired by Foc-Ctrl-Lite. FOC8313 is a highly compact, feature rich, daisy-chainable, field oriented control board based around the DRV8313 3 phase half bridge driver. This board is highly configurable and upgradeable, and includes all the manufacturing files required start producing controllers for $\approx$ $20/board
| Front | Back |
|---|---|
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Features:
- Highly compact 35x35mm outline
- 29x29 square M3 hole pattern
- 12V to 35V operating range
- 3.5A max per phase current
- Onboard STM32F103CBTx microcontroller
- Based on the DRV8313 3 phase half bridge driver
- 2 x INA240A2D high side current sense amplifiers
- 1 x AS5047D back mounted hall effect encoder
- EEPROM to store configurations / calibrations etc.
- Daisy chainable power and CAN
- Programmable with USB-DFU or StLink - 6 pin tag connect
- Auxilliary encoder/Timer port with 5V and GND
- Auxilliary SPI/GPIO and I2C/UART port with 5V and GND
- Easily upgradable for isolated CAN (3 wire)
- Extremely compact isolated CAN
- JLC manufacturing files included
- Cost optimised for PCBA with JLCPCB (as few extended components as possible)
- Most basic variant costs $\approx$ $20 per board (for 10 PCBs at JLCPCB)
- Predominantly single sided design allows for cost effective single sided PCBA, easy hot plating for rework, easy configuration with jumpers
| Top | In1 |
|---|---|
 |  |
| In2 | Bottom |
 |  |
PCBA - Cost Scaling:
| Version | Colour | Finish | Assembly | Quantity | Unit price | Extended Price |
|---|---|---|---|---|---|---|
| v1.0 | Black | Enig | Standard T&B | 15 | $30.8 | $462.57 |
| v1.0 | Black | Enig | Standard Top | 15 | $24.3 | $364.22 |
| v1.0 | Black | HASL | Standard Top | 10 | $24.75 | $247.51 |
| v1.0 | Black | Enig | Standard T&B | 100 | $16.78 | $1678.39 |
| v1.0 | Green | HASL | Economic Top | 2 | $53.45 | $106.89 |
| v1.0 | Green | HASL | Economic Top | 5 | $30.28 | $151.40 |
| v1.0 | Green | HASL | Economic Top | 10 | $20.48 | $204.81 |
| v1.0 | Green | HASL | Economic Top | 15 | $19.2 | $288.48 |
| v1.0 | Green | HASL | Economic Top | 30 | $15.6 | $468.48 |
| v1.0 | Green | HASL | Standard Top | 100 | $12.98 | $1297.77 |
| v1.0 | Black | Enig | No ICs Top | 10 | $15.9 + | $159.37 |
| v1.0 | Black | Enig | No ICs Top | 15 | $12.9 + | $193.44 |
ICs:
15x @LCSC: 215.22 -> 14.33 10x @LCSC: 146.71 -> 14.6