System Block Diagram
Isolated SPI
Component selection
Solution Overview
If communication needs to occur between multiple boards, or even over longer distances, an electrically isolated differential solution is required. Isolated SPI provides a simple and low-cost solution for this. When there is a high potential difference between the transmitter and receiver, such as in a battery management system, even higher requirements are placed on the electrical isolation between devices. For these applications, Wohoo can provide dedicated BMS transformers.
Reference Design
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Standard Circuit Reference
Reference Design
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