The importance of the temperature sensor
chip system design engineers to develop electronic products tend to be two aspects of the restrictions, forcing them to carefully consider heat dissipation problem of the system.
One limitation is that the size of the printed circuit board and box and the cost.
Because the product the more hasten is small, so the air machine box is less, it is difficult to reduce the power consumption big and sensitive to the temperature of the semiconductor chip.
Another aspect performance is restricted, because we constantly improve the processor and digital signal processor (
And the controller (
Performance, but according to Moore's law, each processor performance doubled, power consumption has doubled.
Due to the limitation of these two aspects, so that electronic products are easy to accumulate a lot of heat energy at work, the temperature rising, so that influence on the reliability of the system, and even can give full play to the function will be affected.
In this two problems, the protection of the temperature sensor chip can play a key role.
Heat control system model is set up the function of the temperature sensor circuit board and box after the design is complete, we shall immediately establish a model of thermal control system.
Colored drawing clearly show a multiple bottlenecks in the system design, also let us know whether there is a need to adding active temperature sensor and control device.
National semiconductor's example of this kind of modeling tools, all of great reference value.
Need to protect the key circuit is affirmatory, must formulate relevant protection strategies.
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