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Automobile PCB The Application Of PCB Reliability In Automobile

Mind Electronics Limited | Updated: May 31, 2017

 Automobile PCB PCB reliability in automotive applications Automotive electronics is not completely different from other complex electronic products: multiple central processors, networks, real-time data collection, and extremely complex PCBs. The design pressure of the automotive industry is similar to that of other types of electronic products: the design time is short and the market is highly competitive. So what is the difference between car electronics and electronics such as some high-end entertainment products? Worldly! If the PCB in the entertainment product failure, people's lives are not threatened; but if the failure in the car, people's lives on the precarious. Therefore, the reliability design of automotive electronic components is a major aspect to be considered in the design process.

  The main points and outline are as follows:

  Time and cost stress

  Automobile PCB As with all products that are under pressure to design time and develop costs, auto parts are no exception. A development practice can help electronic products companies meet these basic business goals by using virtual prototyping to analyze the design without the need for cost and time to build multiple physical prototypes, test these models, and test the results based on the test results. Increase or change. In addition, many factors that affect the reliability of the product need to go through a few weeks, months or years of physical damage can be found. So the physical prototypes in these cases are not viable. Even in the laboratory cabin, you can not accurately reproduce the physical oscillations for several years, thermal environment, vibration and temperature cycle damage.

  B. Simulation is the key

  Simulation, or virtual prototyping, has become an increasingly important step in the design process. Just as Dentor's Expedition Enterprise, a complex PCB system design solution contains a variety of forms of virtual prototyping capabilities.

  C. Thermal control

  The most critical point that affects reliability (in terms of performance) is hot. Integrated circuit (IC) overheating will be a problem over time, the car environment will become very ruthless. For example, overheating the parts of the engine compartment, or driving through the climate from the winter of Michigan to the summer of Arizona. Starting from the IC package, through the PCB, until the operating environment of the complete product, should be able to control the heat.

  The use of complex thermal analysis in PCB design and mechanical design can lead to better thermal management and reliability without the need to build and test multiple physical prototypes. This saves a lot of time and money. In addition, with easy-to-use software that is tightly integrated with the design system, designers can quickly experiment with a variety of "hypothetical" scenarios and get a better-performing solution.

  D. Highly accelerated life test

  Another reason for the reliability problem of the vehicle is the continuous vibration of the PCB and the consequent component lead and accessories failure. Generally, the prototypes can be constructed and placed in the accelerating chamber, causing the PCB to vibrate and temperature cycle tests to detect if a fault has occurred. As the design progresses, this approach requires the construction of multiple prototypes and usually takes weeks or even months to complete the simulation of the life expectancy of the auto parts in the accelerating room. This is a very time-consuming and costly process, so the reliability enhancement test may not be complete and comprehensive.

  Automobile PCB There are currently software that can perform the same test in virtual prototyping mode. Designers can use this software to define the PCB and easily carry out the loss simulation experiment. The software can perform complex analyzes within a few hours and indicate possible failures

  Reliability is very important in automotive electronics, and now in view of the time from time to market and cost reduction, it is increasingly necessary to take a method of analyzing the physical prototypes relative to the test room in the software virtual prototyping environment. At present, due to the existence of software, so that electronic and mechanical designers can carry out more simulation program