SLLA334B August   2018  – September 2022 ISO1050 , SN6501

 

  1.   Isolated CAN Solution by Using ISO1050 and SN6501
  2.   Trademarks
  3. 1Introduction
  4. 2Capacitive Isolation Technology
  5. 3Isolated CAN Module Design
    1. 3.1 Transformer Driver
    2. 3.2 5-V to 5-V Isolated Power Design Consideration
    3. 3.3 PCB Design
  6. 4Experiment Validation
  7. 5Conclusion
  8. 6References
  9. 7Revision History

1 Introduction

Today, along with the fast popularization of CAN-bus, the application field is more diversified and complicated than before. Un-proper node design causes poor communication, and even one node failure can result in damage to an entire bus, especially in a harsh environment. Therefore, essential protection circuit should be implemented into node design to improve reliability and reduce unnecessary damage. For common design, isolation for digital signal and power is added between the controller and the transceiver. In some applications that require higher ESD protection, TVS should be added in the bus.

The current solutions are either too complicated (for example, digital isolator, CAN transceiver, and isolated power) or too expensive. As a viable solution, the combination of ISO1050 with SN6501, a compact, high-performance and low-cost reference design, is provided.