Optically Isolating VESC power and control

Hi!



I wanted to isolate (optically ?)  the VESC control board from the power board, since I plan on working at 300V DC, and here is what I have so far:

- Digital and PWM signals go through: A4506 opto isolator (HCPL-4506)

- Current sense through ACS series (712/758 - depending on current requirements of the design)

I do not know how to isolate these signals:

- SENS_SUPPLY

- SENS_A

- SENS_B

- SENS_C



Which are voltage dividers of 39K and 2K2



I'm not sure if they are there for BLDC mode only or if they are required for FOC mode as well.



Any pointers would be appreciated.