#LIN Bus ESD Protection Diode

[rssl2rmm]

https://www.futureelectronics.com/p/electromechanical--circuit-protection--esd-protection/usblc6-2sc6-stmicroelectronics-5742044

ESD diode clamping voltage, ESD protection diode circuit, TVS diode array

USBLC6 Series 2 Line 6 V Uni / Bi-Directional ESD Protection - SOT-23-6

[leiditechelectonicpublishing]

Introduction to Lin Bus and Special Devices for Electrostatic Surge Protection

1、 Introduction to Lin Bus

A. Definition of Lin Bus

Lin bus is a serial communication bus suitable for communication between automotive electronic control units (ECUs).

B. Characteristics of Lin Bus

The Lin bus adopts a single end drive and differential transmission method, which has the characteristics of high-speed transmission and strong anti-interference performance.

C. Application scope of Lin bus

The Lin bus is mainly used for communication between electronic control units (ECUs) in automobiles, such as engine control units, transmission system control units, body control units, and so on. The emergence of the Lin bus enables data exchange and communication between ECUs of different brands, systems, and functions, thereby improving the overall performance and safety of automobiles.

2、 Problems with Lin Bus

A. Hazards of static surges

Static surges and other factors can damage the performance and stability of the Lin bus.

B. Stability and reliability issues of Lin bus

There are also some problems with the Lin bus in practical applications.

3、 Design of electrostatic surge protection

A. Hardware protection measures

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

Suggestions for the layout of ESD devices

a) Place the device as close as possible to the input or connector.

b) Minimize the path length between the device and the protected line.

c) Keep parallel signal paths to a minimum.

d) Avoid running protected conductors in parallel with unprotected conductors.

e) Minimize the conductive circuits of all printed circuit boards (PCBs), including power and ground circuits.

f) Minimize the transient return path length to ground.

g) Avoid using shared transient return paths to common ground points.

h) Try to use ground planes, multi-layer printed circuit boards, and ground through holes as much as possible.

B. Software protection measures

In terms of software, error Check digit (CRC) and other technologies can be used to detect errors in data transmission, so as to ensure the reliability of data.

4、 The Importance of Lin Bus in the Field of Automotive Electronics

A. Advantages of Lin Bus

The Lin bus has the characteristics of high-speed transmission and strong anti-interference performance.

B. The Application Prospects of Lin Bus

In the future field of automotive electronics, the Lin bus will still play an important role and play an important role.

Summary

The interface protection of electronic products requires the use of overvoltage protection devices. Many engineers are aware of the need to use protection devices, but due to improper selection or failure to follow the design principles of ESD circuit PCB, the product fails static or EMC testing, wastes manpower and financial resources, and causes product delays or over design, resulting in cost pressure. Leiditech Electronics provides customers with electromagnetic compatibility EMC design services, providing laboratory testing for free. We aim to efficiently and conveniently complete the design for our customers. We hope that more customers can quickly pass EMC’s projects and improve product reliability as much as possible.

Shanghai Leiditech Electronic Electromagnetic Compatibility Laboratory provides free testing and peripheral electrostatic protection reference circuits.

If you’d like to learn more or have any questions, don’t hesitate to reach out:

[sales16@leiditech.com]

Visit us at [en.leiditech.com] #LinBus#AutomotiveElectronics #SurgeProtection #EMC #ElectromagneticCompatibility #ESD #TechDesign #AutomotiveTech #VehicleInnovation #CircuitProtection #ElectronicsEngineering #CarSafety #Leiditech

[dmion2lls]

https://www.futureelectronics.com/p/electromechanical--circuit-protection--tvs-diodes/pesd1ivn24-ax-nexperia-6133213

Nexperia, PESD1IVN24-AX, Circuit Protection Devices, TVS Diodes

PESD1IVN24 Series 24 V 14 pF SMT LIN Bus ESD Protection Diode - SOD-323

[plapacitor]

What is the role of electrostatic protection diodes in automotive electronics

With the vigorous development of the automobile industry, the original mechanical car has become an intelligent running robot with a soul, which has correspondingly promoted the development of the automotive electronics industry and has become a current hot field. As we all know, no matter what product, safety is always the top priority, especially the car, which is related to the safety of yourself and your family. Various circuit protection measures in the car are slightly improper, such as partial functional failure or the death of the car, there is a high probability of an accident. In the field of increasingly intelligent and integrated new energy vehicles, electrostatic protection diodes are very important for the protection of  Ac Capacitor automotive circuits. Various electronic circuits and precision components in the car, no matter where they are in the car, are vulnerable to sudden electrical transients.

The following are some particularly common automotive protection lines: 1. Traditional communication bus: that is, CAN/LIN, which is a two-wire communication bus suitable for automotive internal control and monitoring functions. The exposed transient shock will cause CAN/LIN Transceiver failed. 2. Power bus: In transient protection, it includes electrostatic diodes embedded in modules and high-impact TVS diodes, which can handle vehicle load dumping; 3. High-frequency antennas for communication/broadcast reception: Because the front end of the RF amplifier Static electricity is very sensitive, so bidirectional, low capacitance ESD protection diodes are required. 4. SIM slot: In order to accept the influence of human-computer interaction, electrostatic diode protection is required.

At present, automotive circuit protection components are not limited to fuses, but also electrostatic protection diodes, TVS diodes, and varistors. The overvoltage protection of electrostatic diodes is also worthy of attention. You must know that in automotive electronics, all electronic devices are faced with the threat of electrostatic discharge and car parabola. Therefore, overvoltage protection is very important for automotive electronics. Therefore, when car manufacturers purchase electrostatic diodes, they must find qualified manufacturers. If they are replaced with inferior products, it is likely to cause great loss of corporate image.

We take the automotive electronic electrostatic protection solution as an example. Because of the need for buttons and USB interfaces, the testing standards are constantly being updated and updated. ISO has also increased the requirements for special testing of vehicles. Without a reliable circuit protection device, it is impossible to To meet this requirement, those car manufacturers must find qualified manufacturers when purchasing electrostatic diodes. If they replace them with inferior products, it is likely to cause great loss of corporate image.