1.Lin Bus Introduction

  • Definition Lin bus is a serial communication bus suitable for communication between automotive electronic control units (ECUs).
  • Features The Lin bus adopts single-ended drive and differential transmission, and has the characteristics of high-speed transmission and strong anti-interference performance.
  • Applications Lin bus is mainly used for communication between electronic control units (ECU) of automobiles, such as engine control unit, transmission system control unit, body control unit, etc. The emergence of Lin bus enables data exchange and communication between ECUs of different brands, different systems and different functions, thereby improving the overall performance and safety of the automobile.

2.Problems With The Lin Bus

  • The hazards of static surge
  • In applications, there are some problems with the stability and reliability of the LIN bus.

3.Electrostatic Surge Protection Design

The design of electrostatic surge protection needs to start from both hardware and software. In terms of hardware, measures such as protection circuits can be used to limit the electrostatic surge voltage, such as protection circuits composed of TVS diodes, inductors, capacitors, etc.

3.1 Protect Solution of Hardware

  • Circuit Protection Solution
Definition of Lin Bus and Electrostatic Protection Solutions-Protection Devices-TVS Diodes-ESD Protection devices-Gas Discharge Tube-Thyristor-Pled Protectors-Mov
  • Texting Requirement

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  • Solutions-ESD Protection

PESD1LIN series automotive electrostatic suppressor products meet the AEC-Q101 certification standard. With low leakage current, fast response speed (nS level), high reliability and other characteristics, they are widely used in ESD electrostatic protection of high-speed signal transmission interfaces such as HDMI, USB, VGA, etc. in automotive electronic equipment, protecting each input/output pin and providing high-level protection for electronic equipment that may experience destructive electrostatic discharge (ESD). For more product details, please visit:https://en.semiware.com/automotive-esd/pesd1lin/

  • PESD1LIN Datasheet
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3.2 Protect Solution of Software

In terms of software, we can adopt error checking code (CRC) to detect errors in data transmission, thereby ensuring the reliability of data.

4.The importance of Lin bus in automotive electronics

4.1 Advantages of LIN bus

High-speed transmission and strong anti-interference performance.

4.2 Application Prospects of Lin Bus

In the future, Lin bus will still play an important role and play an important role in the automotive applications.

Summary
Interface protection of electronic products requires overvoltage protection devices. Many engineers realize that protection devices are needed, but due to improper selection or failure to follow the ESD circuit PCB design principles, the product fails the electrostatic test or EMC test. The product is repeatedly verified and tested, which wastes manpower and financial resources, causing product delays in listing, or over-design, resulting in cost pressure. Semiware specializes in providing customers with electromagnetic compatibility (EMC) design services, providing laboratories for free testing, and completing the design from the perspective of efficiency and cost control for customers. We hope to help more customers quickly pass EMC projects and improve product reliability.