Global
EN
Applications
Support
Support
With over a thousand cooperative customers and 17 years of service experience, we can provide you with everything from model selection to technical support
Development
Development
Our unyielding mission is to continuously innovate and lead the industry's progress.
News & Events
News & Events
We will share every little bit of our life with you at all times
About
About
Yinte Electronics integrates technology research and development, chip manufacturing, packaging and testing, sales, and service
Careers
Careers
Unleash potential together, shape a healthy future for humanity
News & Events
We will share every little bit of our life with you at all times
Corporate News Industry News Product Knowledge Downloads

New Energy Vehicle Ethernet Protection

Source:Yint Time:2024-12-05 Views:2180
Share:

新能源车载以太网保护

随着新能源汽车技术的日新月异,传统工业的以太网的技术也被大量用于汽车行业,汽车以太网它为汽车行业提供了拓扑灵活性、高带宽和抗干扰通信,为了智能网联汽车发展的必然趋势,2016 年IEEE 标准化对对以太网联盟委员会开发的汽车以太网系统 100BASE-T1 和 1000BASE-T1,以满足汽车应用的特定要求,尤其是在电磁干扰 (EMI) 和电磁兼容性 (EMC) 方面,2020 年,该系统支持多点总线拓扑。

 

新能源汽车中,数百米长的电缆连接着多个管理各种功能的电子控制单元(ECU)。电缆通常捆绑在一起形成线束,这就大大增加了出现EMI相关问题的可能性。在最坏的情况下UTP电缆中的 EMI电压振幅可高达100 V,因此以太网网络必须足够稳定,能够承受这些峰值。

项目

工业计算机以太网

汽车以太网

10Base-T1/100BASE-T1/1000BASE-T1

屏蔽单双绞线

非屏蔽单双绞线连接物理层接口

电缆

更小、更轻

保护电路

简单

共模抑制

静电ESD带入PHY

不量化

测试量化静电放电

Layout布线

简单

稍复杂

静电15KV 钳位VC

取决于PHY芯片的能力

小于100V

 

设计参考电路

 

NRESDLC24VAPBETH  Electrical Characteristics                                                                 

TA=25°C unless otherwise specified

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VRWM

Reverse Working Peak Voltage

-

 

 

24.0

V

IR

Reverse Current

VRWM = 24V

 

 

0.1

μA

Vt1

trigger voltage

tP=0.2/100ns(TLP)

100

140

 

V

Vh

holding voltage

tP=0.2/100ns(TLP)

28

 

 

V

Rdyn

dynamic resistance

I(TLP0.2/100ns=40 A

 

0.6

 

Ω

CD

Diode Capacitance

VR = 0V, f = 1MHz

 

 

2

pF

 

SOT-23 Package Outline & Dimensions