Significance of thermal design for electronic products
High chip temperature in electronic products is one of the most common causes of product failure. In fact, in addition to the data fragments generated during the operation of the software, the chip continues to work at high temperature, and the "damage" of its internal architecture is also one of the inevitable reasons. There should be such an experience in life. Even if you replace the hard disk with a new system after using the computer for a period of time, its reaction speed will not be greatly improved. This is because of the "Breakage" of the internal hardware of the computer. This "Breakage" will continue to increase and the performance will continue to decline with the extension of running time.
An approximate estimate of the impact of temperature on the operating life of products close to the actual situation is that the operating life is halved for every 10 ℃ increase in chip temperature. Of course, the temperature rise of 10 ℃ here is within the normal operating temperature range of the chip. The following figure shows the variation curve of the operating life of a typical chip with time:
Therefore, the temperature of the chip has a very direct and significant impact on the operating life, energy efficiency and performance stability of electronic products. After the electronic product is manufactured, the initial test can run normally, which can not prove that it is qualified and reliable.
An excellent electronic product that can stand the test of the market must be designed for temperature control. For the current popular consumer terminal products, such as mobile phones, tablet computers, game consoles, not only the chip temperature should be controlled, but also the shell temperature of the product is a key aspect affecting the customer experience. With the continuous improvement of power density of electronic products, the heat dissipation problem of electronic products will become increasingly prominent, and thermal design engineers are facing great challenges and opportunities.
