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| |--| --| | | |

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