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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

Single Pair Ethernet Brief

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

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isoUART

https://www.infineon.com/cms/en/product/battery-management-ics/tle9015dqu/

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isoCAN

Aim for integrated solution, unless price far outweighs benefits

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isoI2C

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