Automotive electronics are generally more expensive, one of the main reasons is the use of automotive-grade electronic components, but what kind of electronic components are automotive-grade devices?
What is automotive regulation grade? Vehicle regulation grade is a specification standard that applies to electronic components in automobiles.
So let’s see what the difference is between electronic components used in automobiles and other electronic components!
First, Comparison of differences
1, The industry’s general perception: military > automotive > industrial > consumer electronics
2, Automotive electronics on the external working environment of the components, such as temperature, humidity, mold, dust, water, EMC and harmful gas erosion requirements, depending on the installation location and other different needs, but generally higher than consumer electronics.
Second, reliability and consistency
1, In addition to the environment, automotive electronics requirements for components also involve a lot to often mentioned consistency and reliability, for example, they are also greater than the requirements of industrial-grade products.
2, Now the car has entered a stage of mass production, a car can be produced hundreds of thousands of units a year, so the quality of this product reliability and consistency requirements are very high.
3, Reliability: the ability of a product to work under specified conditions without making mistakes
4, Consistency: the parts remain consistent (so this is why the requirements of automotive parts are often described in terms of PPM (parts per million))
5, Cost Factor: With the same requirements, automotive grade needs to consider cost reduction more than military grade, which increases the difficulty of designing automotive grade products.
Third, the cost of using the car regulation grade parts
Dialectical materialism believes that there are two sides to everything, any choice can not be only benefits without disadvantages, so what are the disadvantages of using automotive-grade electronic components?
1. Expensive: development and validation costs up to, high threshold
2. Long cycle time
A lot of verification work will affect the speed of new products on the market, chip manufacturers will also be in the consumer electronics market after the maturity of the product will be changed to apply in the automotive market.
3.Difficult selection
Many solutions, large differences.
The complexity of the parts may vary greatly.
However, sometimes in order to meet the requirements of vehicle regulations, some highly integrated solutions have to be abandoned.
Fourth, the trade-offs of automotive-grade electronic parts
Due to the current technical process limitations, not every electronic component used in automobiles needs to meet the so-called automotive-grade requirements
1、Components involved in safety, can not accept deviations
To enable emergency call batteries to maintain performance at -40°C, engineers wrap heated resistance wire around the battery.
2. Not involved in safety, acceptable deviation
The response and optical performance of the LCD screen of the entertainment system will be reduced at low temperature, which is accepted by most engineers.
I think now we all have a preliminary understanding of the automotive grade chip.