By LEIDITECH | 18 March 2024 | 0 Comments
The Difficulties of Static Surge in Automotive Atmosphere Lights
Car ambient lighting，As the name suggests，It is the lighting that sets the atmosphere inside the car apart，It is a manifestation of emotional design in car interiors。 Generally available in warm colors（Red, etc）And cold color scheme（blue、Purple, etc）two types，Brilliant and romantic after opening at night，Can create a car interior atmosphere，Make the journey not so dull and boring，Enable people to have a unique driving experience。
Regarding the surge protection of car ambient lights in Shanghai LeimaoEMCThe analysis difficulties of the young man include the following aspects：
1. Complex electrical environment：The electrical system of automobiles is relatively complex，There are various sources of interference present，Like ignition system、electrical machinery、Electronic devices, etc，This may pose a challenge to the surge protection of ambient lighting。
2. voltage fluctuation：During the operation of the car，The power supply voltage may experience significant fluctuations，For example, when starting the engine or switching on/off electrical equipment。This requires surge protection devices to effectively respond to these voltage changes，Prevent damage to ambient lighting。
3. Multipath load：Car ambient lighting typically consists of multiple light strips or bulbs，Each load needs separate protection。This increases the complexity and cost of protective circuits。
4.Reliability requirements：The automotive environment requires high reliability of electronic devices，The surge protection device must be able to operate stably during long-term use，Not affected by temperature、The influence of factors such as humidity and vibration。
5. electromagnetic compatibility ：The ambient lighting system needs to coexist with other electronic devices，And it cannot affect the vehicle'swireless communication system（Like Bluetooth、GPS etc.）Generating interference。therefore，Surge protection design needs to consider electromagnetic compatibility issues。
6. Standards and regulations：The automotive industry has strict standards and regulations，The surge protection design needs to comply with these requirements，To ensure security and compatibility
7. Cost and size limitations：In automotive applications，Cost and size are usually important considerations。The surge protection device needs to meet the protection requirements while also，Minimize size and cost as much as possible，How to choose suitable components to meet the needs of car manufacturers7637-2Complete testing and load shedding requirements，LinHow to select and protect wirestvs？
Although there are these difficulties，But Shanghai Leimao can assist electronic engineers in taking some measures to improve the effectiveness of surge protection for ambient lighting，For example, Shanghai Leimao can help select suitable surge protection devices、optimizationcircuit design、Conduct rigorous testing, etc。If you are conducting relevant design or research，Suggestions and professional Shanghai LeimaoEMCLittle brother, have a deep discussion，To ensure the effectiveness and reliability of surge protection schemes。
The following is a static surge protection scheme for ambient lighting for reference
1.The following is a well-known brandLEDDriver Automotive Product Series ，It is recommended to add power to the drive power supply areaESDdiode,To drivechipPerform electrostatic surge protection。
2. This solution is a car standard capacitive touch controlSoCchipTCAE11，Used to achieve functions such as smart buttons or sliders，Suitable for in car reading lights，Atmosphere light，Central control，Air conditioning control，steering wheel，Various application scenarios such as door handles。In this scheme, the power input terminal also needs to be placedESDdiode ,Protecting the backendSoC Control safety of chips and ambient lighting。
3.ESD Diode selection
Advantages of power line selection： Small packaging，Suitable for narrow installation space inside the car。 Anti surge currentIPPlarge，High anti-static±30kV(air),±30kV(contact)。
LinLine protection priority selection 18/24 asymmetric voltageESDdiodePESD1LIN，You can also choose high-power 24VBidirectional device。
Leiditech has developed and designed a combination with Luo MingxinLumissilBrand andTCAEThe chip solution for 11 pure capacitive touchESDproduct，If you have any selection requirements for car ambient lighting, please contact Shanghai LeimaoEMCLittle brother。
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