isoSPI ICs are out of stock and we need sufficient isolation for our BMS system.
Reading Material
https://www.infineon.com/dgdlac/Infineon-INF1197_ART_BMS_Whitepaper_d08-Whitepaper-v01_00-EN.pdf?fileId=8ac78c8c7f2a768a017f8da0f4ff7734 : Infineon BMS Solutions
BMS Whitepaper : Isolation Transformers BMS
Current Options (WIP)
Single Pair Ethernet
Requires isolation transformer but potential viable method with right transceivers and receivers
Wireless
Not the best option as it isn’t very secure (can be hacked into unless we want to put effort into protection methods)
Digital Isolators
SPI Galvanic Isolator: https://www.digikey.ca/en/products/detail/analog-devices-inc-maxim-integrated/MAX22820EAWA/16395055
https://www.digikey.ca/en/products/detail/analog-devices-inc-maxim-integrated/MAX22421CASA/16395074
I2C Isolator: https://www.digikey.ca/en/products/detail/analog-devices-inc/LTC4310IMS-2-PBF/2297670 (requires some kind of transformer)
General Isolator: https://www.digikey.ca/en/products/detail/analog-devices-inc-maxim-integrated/MAX22519AWA/16272760
RS485
https://www.powersystemsdesign.com/articles/isolate-to-communicate/22/5838
Requirements:
In stock:
Cost:
Complexity:
isoUART
https://www.infineon.com/cms/en/product/battery-management-ics/tle9015dqu/
Requirements:
In stock:
Cost:
Complexity:
isoCAN
Aim for integrated solution, unless price far outweighs benefits
Requirements:
In stock:
Cost:
Complexity:
isoI2C
Requirements:
In stock: ISO1640DWR https://www.digikey.ca/en/products/detail/texas-instruments/ISO1640DWR/15666802
Cost: $5.62
Complexity: